Dr. Chee Kong Yap

Professor
Department of Biology, Faculty of Science, University of Putra Malaysia, Malaysia

Highest Degree
Ph.D. in Ecotoxicology and Pollution Studies from Putra University,Malaysia

My URL
https://livedna.org/60.9528

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Biography

Prof. Yap has been working as a full professor at Universiti Putra Malaysia (UPM) since 2021. Prof. Yap has been an academician for more than 21 years at UPM and 26 years as a researcher. Prof Yap has supervised more than 85 undergraduates and 30 postgraduate students in the fields of ecotoxicology, environmental biology, environmental sciences, water quality and ecotoxicological genetics. Prof. Yap has published more than 380 papers in refereed academic journals, 5 books (three published in NOVA Science Publishers, USA) and 35 book chapters. Until February 2024, 252 of them have been indexed in Elsevier’s Scopus with an H-index of 34 (>3800 citations). Prof Yap has also been invited as an honorary Editorial Board member for more than 50 international academic journals. Prof Yap has been an invited visiting researcher at National lnstitute of Environmental Studies, Tsukuba (Japan). Nationally, Prof Yap has been officially appointed as an Adjunct Professor at the INTI International University Malaysia. Internationally, Prof. Yap has been officially appointed as a Visiting Professor at Kobe University (Japan).

Area of Interest:

Biology
Biotechnology
Zoology
Toxicants
Basic Molecular Biology Techniques

Selected Publications

  1. Yap, C.K., T.Y.A. Hew, R. Nulit, W.M. Syazwan and H. Okamura et al., 2024. Copper in commercial marine fish: From biomonitoring to the ESG (environment, social, and governance) method. Pollutants, 4: 117-135.
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  2. Yap, C.K. and K.A. Al-Mutairi, 2024. A conceptual model relationship between industry 4.0-food-agriculture nexus and agroecosystem: A literature review and knowledge gaps. Foods, Vol. 13. 10.3390/foods13010150.
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  3. Ismail, M.S., Z. Ilias, M.N. Ismail, G.B. Goeden, M.L. Khoo and C.K. Yap, 2024. Reef health assessment of Pulau Payar Marine Park during the COVID-19 pandemic in Malaysia. Aquat. Invertebr. Ecosyst. Res., 1001: 4-13.
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  4. Azhar, N., C.K. Yap, R. Nulit, H. Omar, W.M. Syazwan and C.S. Leow, 2024. A preliminary study of direct observation and selected water quality monitoring in Putrajaya Lake: The status between October-December 2022. Int. J. Sustainable Energy Environ. Res., 13: 25-35.
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  5. Zhou, M., H. Yanai, C.K. Yap, C. Emmanouil and H. Okamura, 2023. Anthropogenic microparticles in sea-surface microlayer in Osaka Bay, Japan. J. Xenobiot., 13: 685-703.
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  6. Yap, C.K., S.A. Wakid, J.M. Chew, J. Sutra and W.M. Syazwan et al., 2023. Shell deformities in the green-lipped mussel Perna viridis: Occurrence and potential environmental stresses on the west coast of peninsular Malaysia. Pollutants, 3: 406-418.
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  7. Yap, C.K., B.H. Pang, W.H. Cheng, K. Kumar and R. Avtar et al., 2023. Heavy metal exposures on freshwater snail Pomacea insularum: Understanding its biomonitoring potentials. Appl. Sci., Vol. 13. 10.3390/app13021042.
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  8. Yap, C.K. and K.A. Al-Mutairi, 2023. The ecological-health risks of potentially toxic metals in the surface sediments and leaves of salt-secreting Avicennia officinalis as potential phytoremediators: A field-based biomonitoring study from Klang Mangrove area. Biology, Vol. 12. 10.3390/biology12010043.
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  9. Yap, C.K. and K.A. Al-Mutairi, 2023. Potentially toxic metals in the tropical mangrove non-salt secreting Rhizophora apiculata: A field-based biomonitoring study and phytoremediation potentials. Forests, Vol. 14. 10.3390/f14020237.
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  10. Yap, C.K. and K.A. Al-Mutairi, 2023. Lower health risks of potentially toxic metals after transplantation of aquacultural farmed mussels from a polluted site to unpolluted sites: A biomonitoring study in the straits of Johore. Foods, Vol. 12. 10.3390/foods12101964.
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  11. Yap, C.K. and K.A. Al-Mutairi, 2023. Effective microorganisms as Halal-based sources for biofertilizer production and some socio-economic insights: A review. Foods, Vol. 12. 10.3390/foods12081702.
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  12. Yap, C.K. and K.A. Al-Mutairi, 2023. Byssus of green-lipped mussel Perna viridis as a biomonitoring biopolymer for zinc pollution in coastal waters. Biology, Vol. 12. 10.3390/biology12040523.
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  13. Yap, C.K. and K.A. Al-Mutairi, 2023. Biomonitoring-health risk nexus of potentially toxic metals on Cerithidea obtusa: A biomonitoring study from peninsular Malaysia. Foods, Vol. 12. 10.3390/foods12081575.
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  14. Yap, C.K. and C.S. Leow, 2023. The similarities of sustainable marine ecosystem management and circular economy in industry 4.0. Int. J. Hydrol., 7: 185-187.
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  15. Aliyu, A.D., M. Mustafa, N.A. Abd Aziz, Y.C. Kong and N.S. Hadi, 2023. Assessing indigenous soil ureolytic bacteria as potential agents for soil stabilization. J. Trop. Biodivers. Biotechnol., Vol. 8. 10.22146/jtbb.75128.
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  16. Yap, C.K., R. Go, J.S. Bujang, W.M. Syazwan and N. Azrizal-Wahid et al., 2022. The role of museum of biological collections in environmental research: A short note. MOJ Ecol. Environ. Sci., 7: 53-55.
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  17. Yap, C.K., N.F.N. Nasrudin, M.S. Ismail, R. Nulit and M.H. Ibrahim et al., 2022. Usage of biofertilizers to correct the nutrient deficiency of oil palm (Elaeis guineensis): An observational study and review. Food Sci. Eng., 3: 147-153.
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  18. Yap, C.K., M. Saleem, W.S. Tan, W.M. Syazwan and N. Azrizal-Wahid et al., 2022. Ecological-health risk assessments of copper in the sediments: A review and synthesis. Pollutants, 2: 269-288.
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  19. Yap, C.K., H. Hashim, M.H. Ainuddin, M.A. Abd Rahman and K.A. Yusof et al., 2022. Usability of university websites as information sources: A review and synthesis based on 2021 publications indexed in scopus database. Cloud Comput. Data Sci., 4: 60-76.
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  20. Yap, C.K., A. Yaacob, W.S. Tan, K.A. Al-Mutairi and W.H. Cheng et al., 2022. Potentially toxic metals in the high-biomass non-hyperaccumulating plant Amaranthus viridis: Human health risks and phytoremediation potentials. Biology, Vol. 11. 10.3390/biology11030389.
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  21. Yap, C.K. and K.A. Al-Mutairi, 2022. High ecological health risks of potentially toxic metals in polluted drainage sediments: Is there a need for public concern during flash floods? Water, Vol. 14. 10.3390/w14152316.
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  22. Yap, C.K. and K.A. Al-Mutairi, 2022. Copper and zinc levels in commercial marine fish from Setiu, East Coast of Peninsular Malaysia. Toxics, Vol. 10. 10.3390/toxics10020052.
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  23. Yap, C.K. and K.A. Al-Mutairi, 2022. Comparative study of potentially toxic nickel and their potential human health risks in seafood (Fish and Mollusks) from peninsular Malaysia. Biology, Vol. 11. 10.3390/biology11030376.
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  24. Abed, N.S., M. Abdel Monsif, H.M.H. Zakaly, H.A. Awad, M.M. Hessien and C.K. Yap, 2022. Assessing the radiological risks associated with high natural radioactivity of microgranitic rocks: A case study in a Northeastern Desert of Egypt. Int. J. Environ. Res. Public Health, Vol. 19. 10.3390/ijerph19010473.
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  25. Kong, Y.C., C.W. Hee, W.K. Wei, Y. Aziran and R. Rozilah et al., 2020. Health risks of essential Ni and Fe via consumption of water spinach Ipomoea aquatica collected from peninsular Malaysia. Ann. Environ. Sci. Toxicol., 10.17352/aest.000018.
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  26. Yap, C.K., W.H. Cheng, M.H. Ali, R. Nulit, S.H.T. Peng, M.S. Ismail and C.S. Leow, 2019. Health risk assessment of heavy metals in prawn Penaeus merguiensis collected in 2007 from Sri Serdang market, Peninsular Malaysia. Acta Scient. Nutr. Health, 3: 109-113.
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  27. Yap, C.K., W. Chew, W.H. Cheng, H. Okamura, H. Harino, S.H.T. Peng and C.S. Leow, 2019. Higher bioavailability and contamination by copper in the edible mussels, snails and horseshoe crabs at Kampung Pasir Puteh: Evidence of an industrial effluent receiving site at Pasir Gudang area. Adv. Bioequiv. Availab., Vol. 2, No. 5. 10.31031/ABB.2019.02.000548.
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  28. Yap, C.K., S.H.T. Peng, C.W. Yap, R. Nulit and U.R. Sinniah, 2019. Comparison of deficiency and toxicity of copper between human and crop plants: a review and some notes. Acta Sci. Nutr. Health, 3: 200-204.
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  29. Yap, C.K., S.H.T. Peng and C.S. Leow, 2019. Contamination in Pasir Gudang area, Peninsular Malaysia: What can we learn from Kim Kim River chemical waste contamination? J. Humanit. Educ. Dev., 1: 84-87.
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  30. Yap, C.K., N. Ariffin, R. Nulit, M.H. Ibrahim, S.H.T. Peng, C.W. Yap and W.K. Ng, 2019. The potential of digestive caecum in mudflat snail Telescopium telescopium as a possible cadmium source for industrial application. EC Gastroenterol. Dig. Syst., 6: 752-756.
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  31. Yap, C.K., F.B.E. Thomas, W.H. Cheng, M.H. Ibrahim and R. Nulit et al., 2019. Distribution of heavy metals in edible bivalve Donax faba collected from Pasir Panjang: A health risk assessment. Front. Drug Chem. Clin. Res., Vol. 2. 10.15761/FDCCR.1000128.
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  32. Yap, C.K., C.W. Yap, S.H.T. Peng, U.R. Sinniah, C.S. Leow, Y. He and W.K. Ng, 2019. Oil palm biomass wastes as renewable energy sources in Malaysia: Potentials and challenges. Global J. Civil Environ. Eng., 1: 20-24.
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  33. Yap, C.K., A. Yaacob, M.H. Ibrahim, R. Nulit and C.S. Leow, 2019. Heavy metals in bitter gourd (Momordica charantia): Human health risk assessment. ARC J. Nutr. Growth, 5: 1-5.
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  34. Yap, C.K., A. Yaacob, K.W. Wong, R. Nulit and M. Nallapan et al., 2019. Human health risks of heavy metals in okra (Abelmochus esculentus) and lettuce (Lactuta sativa) collected from selected farms in Peninsular Malaysia. Food Sci. Nutr. Technol., Vol. 4, No. 3. 10.23880/fsnt-16000180.
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  35. Yap, C.K., 2019. Sustainable seafood resources by applying industry 4.0: a short note. Global J. Nutr. Food Sci., 10.33552/gjnfs.2019.02.000545.
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  36. Yap, C.K., 2019. Fragmentation of research papers: Some commentaries. Global J. Forensic Sci. Med., Vol. 1, No. 3. .
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  37. Yap, C.K., 2019. A sustainably successful entrepreneur with a visionary green-minded biotechnology: Shih Hao Tony Peng as a model. J. Humanit. Educ. Dev., 1: 106-107.
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  38. Yap, C.K. and U.R. Sinniah, 2019. Ecotoxicological genetics: From mussel watch to crop watch. Environ. Sustain. Climate Change, Vol. 1, No. 1. .
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  39. Yap, C.K. and S.H.T. Peng, 2019. Cleaning contaminated soils by using microbial remediation: A review and challenges to the weaknesses. Am. J. Biomed. Sci. Res., 2: 126-128.
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  40. Yap, C.K. and M. Mustafa, 2019. From general sciences to applied sciences: Some notes. MOJ Biol. Med., 4: 34-35.
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  41. Yap, C.K. and C.W. Yap, 2019. Water and electricity in Malaysia: A short note. Int. J. Hydrol., 3: 314-315.
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  42. Yap, C.K. and C.S. Leow, 2019. Social factors for coastal management: A short review and some insights. Global J. Civil Environ. Eng., 1: 1-7.
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  43. Wong, K.W., C.K. Yap, R. Nulit, H. Omar, A.Z. Aris, W.H. Cheng, M.T. Latif and C.S. Leow, 2019. Zn in vegetables: A review and some insights. Integr. Food Nutr. Metab., Vol. 6. 10.15761/IFNM.1000245.
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  44. Sharifinia, M., Z.A. Bahmanbeigloo, W.O. Smith, C.K. Yap and M. Keshavarzifard, 2019. Prevention is better than cure: persian gulf biodiversity vulnerability to the impacts of desalination plants. Global Change Biol., 25: 4022-4033.
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  45. Peng, S., , C. Yap, P. Ren and E. Chai, 2019. Effects of environment and nutritional conditions on mycelial growth of Ganoderma boninense. Int. J. Oil Palm, 2: 95-107.
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  46. Mohamad, N., M.S. Ismail and C.K. Yap, 2019. Determination of dispersion predictability on oil spill dispersant using the warren spring laboratory LR 448 test and swirling flask test. Pharmacol. Toxicol. Pharmaceut., 1: 1-5.
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  47. Kong, Y.C., C.W. Hee, A.M. Hafetz, N. Rosimah and P.S.H. Tony et al., 2019. Heath risk assessment of heavy metals in shrimp Acetes sp. and cincalok collected in 2007 from pantai klebang, peninsular Malaysia. J. Toxicol. Risk Assess., 10.23937/2572-4061.1510028.
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  48. Kong, Y.C. and P.S.H. Tony, 2019. From green biotechnology to food safety of crop production: all cosmos bio-tech as a model. J. Hum. Nutr., 10.36959/487/283.
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  49. Jafarabadi, A.R., A.R. Bakhtiari, Z. Yaghoobi, C.K. Yap, M. Maisano and T. Cappello, 2019. Distributions and compositional patterns of Polycyclic Aromatic Hydrocarbons (PAHs) and their derivatives in three edible fishes from Kharg Coral Island, Persian Gulf, Iran. Chemosphere, 215: 835-845.
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  50. Ismail, M.S. and C.K. Yap, 2019. Observational developments of the culture of big-belly seahorse, Hippocampus abdominalis (Lesson, 1827): A conservation effort for the future. Global J. Civil Environ. Eng., 1: 8-13.
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  51. Al-Shami, S.A., C.K. Yap, K.W. Wong, S.M. Al-Qahtani, L. Alsabih and N. Al-Zaqri, 2019. Ecological risk assessments of heavy metals in surface sediments collected from Haqal coastal waters (Tabuk region), Saudi Arabia. Applied Ecol. Environ. Res., 17: 3065-3075.
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  52. Yap, C.K., W.H. Cheng, N.M. Rihan, R. Nulit, H. Omar and S. Shohaimi, 2018. A preliminary screening of Cd and Pb concentrations in the some traditional Chinese herbal medicines bought from selected shops in Peninsular Malaysia. Am. J. Toxicol. Res., Vol. 1, No. 1. .
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  53. Yap, C.K., N.M. Rihan, W.H. Cheng, R. Nulit, S. Abdo Al-Shami and W. Ratnam, 2018. Heavy metals (Cu, Fe, Ni and Zn) in traditional Chinese herbal medicines bought from selected shops from Peninsular Malaysia. Food Sci. Nutr. Technol., Vol. 3, No. 4. 10.23880/FSNT-16000156.
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  54. Yap, C.K., 2018. Selected organs of marine mussels as accurate biomonitors of metal bioavailability and contamination in the coastal waters: Challenges. EC Pharmacol. Toxicol., 6: 528-534.
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  55. Yap, C.K., 2018. A review of Cd, Cu and Zn in cockle Anadara granosa and mussel Perna viridis: Comparison of food safety limits and human health risk assessment. SCIOL Biomed., 2: 89-101.
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  56. Yaacob, A., C.K. Yap, R. Nulit, H. Omar, S.A. Abdo Al-Shami and A.R. Bakhtiari, 2018. A comparative study of health risks of Fe and Ni in the vegetables collected from selected farming areas of Peninsular Malaysia. J. Aquat. Pollut. Toxicol., Vol. 2, No. 1. .
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  57. Yaacob, A., C.K. Yap, R. Nulit, H. Omar, S. Abdo Al-Shami and A.R. Bakhtiari, 2018. Assessment of health risks of the toxic Cd and Pb between leafy and fruit vegetables collected from selected farming areas of Peninsular Malaysia. Integr. Food Nutr. Metabolis, Vol. 5, No. 3. 10.15761/IFNM.1000215.
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  58. Jafarabadi, A.R., A.R. Bakhtiari, M. Aliabadian, H. Laetitia, A.S. Toosi and C.K. Yap, 2018. First report of bioaccumulation and bioconcentration of Aliphatic Hydrocarbons (AHs) and persistent organic pollutants (PAHs, PCBs and PCNs) and their effects on alcyonacea and scleractinian corals and their endosymbiotic algae from the Persian Gulf, Iran: Inter and intra-species differences. Sci. Total Environ., 627: 141-157.
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  59. Ashraf, A., E. Saion, E. Gharibshahi, C.K. Yap, H.M. Kamari, M.S. Elias and S.A. Rahman, 2018. Distribution of heavy metals in core marine sediments of coastal east Malaysia by instrumental neutron activation analysis and inductively coupled plasma spectroscopy. Applied Radiat. Isot., 132: 222-231.
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  60. Yap, C.K., A.R. Bakhtiari and W.H. Cheng, 2017. Impacts of marine pollution and toxicology: A mussel watch experience in peninsular Malaysia. Aquatic pollution Malaysia. J. Aquat Pollut. Toxicol., 1: 1-4.

  61. Yap, C.K., 2017. Essential minerals for good heath, but their overdose is not. EC Nur., 6: 109-112.

  62. Wong, K.W., C.K. Yap, R. Nulit, M.S. Hamzah and S.K. Chen et al., 2017. Effects of anthropogenic activities on the heavy metal levels in the clams and sediments in a tropical river. Environ. Sci. Pollut. Res., 24: 116-134.
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  63. Ong, G.H., C.K. Yap, M. Mahmood, S.G. Tan and M.S. Hamzah, 2017. Magnesium in local edible ulam (Centella asiatica) and its relation to their habitat soils in peninsular Malaysia. Pertanika J. Trop. Agric. Sci., 40: 1-18.

  64. Ashraf, A., E. Saion, E. Gharibshahi, H.M. Kamari, C.K. Yap, M.S. Hamzah and M.S. Elias, 2017. Distribution of trace elements in core marine sediments of coastal east Malaysia by instrumental neutron activation analysis. Applied Radiation Isotopes, 122: 96-105.
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  65. Yap, C.K., Y.J.E. Ng, F.B.E. Thomas, W.H. Cheng and G.H. Ong, 2016. The use of foot of the green-lipped mussel is perna viridis as an alternative method to reduce the gender effect on the bioaccumulation of Cu and Zn in the mussel. Open J. Oceanography, 1: 22-25.

  66. Yap, C.K., W.H. Cheng, A. Karami and A. Ismail, 2016. Health risk assessments of heavy metal exposure via consumption of marine mussels collected from anthropogenic sites. Sci. Total Environ., 553: 285-296.
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  67. Sharifinia, M., A. Mahmoudifard, J.I. Namin, Z. Ramezanpour and C.K. Yap, 2016. Pollution evaluation in the Shahrood River: Do physico-chemical and macroinvertebrate-based indices indicate same responses to anthropogenic activities? Chemosphere, 159: 584-594.
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  68. Ong, G.H., L.S. Wong, A.L. Tan and C.K. Yap, 2016. Effects of metal-contaminated soils on the accumulation of heavy metals in gotu kola (Centella asiatica) and the potential health risks: A study in Peninsular Malaysia. Environ. Monitoring Assess., Vol. 188. 10.1007/s10661-015-5042-0.
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  69. Karami, A., N. Romano, H. Hamzah, S.L. Simpson and C.K. Yap, 2016. Acute phenanthrene toxicity to juvenile diploid and triploid African catfish (Clarias gariepinus): Molecular, biochemical and histopathological alterations. Environ. Pollut., 212: 155-165.
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  70. Karami, A., D. Omar, J.M. Lazorchak, C.K. Yap, Z. Hashim and S.C. Courtenay, 2016. A comparison of biomarker responses in juvenile diploid and triploid African catfish, Clarias gariepinus, exposed to the pesticide butachlor. Environ. Res., 151: 313-320.
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  71. Ashraf, A., E. Saion, E. Gharibshahi, H.M. Kamari, C.K. Yap, M.S. Hamzah and M.S. Elias, 2016. Rare earth elements in core marine sediments of coastal East Malaysia by instrumental neutron activation analysis. Applied Radiat. Isotopes, 107: 17-23.
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  72. Yap, C.K., A. Jusoh, W.J. Leong, A. Karami and G.H. Ong, 2015. Potential human health risk assessment of heavy metals via the consumption of tilapia Oreochromis mossambicus collected from contaminated and uncontaminated ponds. Environ. Monit. Assess., Vol. 187. 10.1007/s10661-015-4812-z.
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  73. Yap, C.K., 2015. Comment on assessment of heavy metal contamination in Hindon River sediments: A chemometric and geochemical approach published in Chemosphere 87 (2012) 945-953. Chemosphere, 119: 1465-1466.
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  74. Yap, C.K. and W.H. Cheng, 2015. Beryllium levels in the mangrove snail, Nerita lineata and surface sediments from Peninsular Malaysian Mangrove Area. Sains Malaysiana, 44: 965-971.
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  75. Cheng, W.H., C.K. Yap, M.P. Zakaria, A.Z. Aris and S.G. Tan, 2015. Lithium levels in Peninsular Malaysian coastal areas: An assessment based on mangrove snail Nerita lineata and surface sediments. Pertanika J. Trop. Agric. Sci., 38: 93-101.

  76. Cheng, W.H. and C.K. Yap, 2015. Potential human health risks from toxic metals via mangrove snail consumption and their ecological risk assessments in the habitat sediment from Peninsular Malaysia. Chemosphere, 135: 156-165.
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  77. Yap, C.K., F.B. Edward and S.G. Tan, 2014. Concentrations of heavy metals in different tissues of the bivalve Polymesoda erosa: Its potentials as a biomonitor and food safety concern. Pertanika J. Trop. Agric. Sci., 37: 19-38.
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  78. Yap, C.K., 2014. Shells of Telescopium telescopium as biomonitoring materials of ni pollution in the tropical intertidal area. Int. J. Adv. Applied Sci., 3: 11-18.
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  79. Yap, C.K., 2014. Elemental concentrations in the surface sediments collected from the straits of Malacca: 2004 sampling cruise. Int. J. Adv. Applied Sci., Vol. 3. .
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  80. Yap, C.K., 2014. Contamination of heavy metals and other organic pollutants in Perna viridis from the coastal waters of Malaysia: A review based on 1998 data. J. Sci. Res. Rep., 3: 1-16.
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  81. Yap, C.K., 2014. A review on contamination of heavy metals, linear alkylbenzenes, polycyclic aromatic hydrocarbons, phenolic endocrine disrupting chemicals and organochlorine compounds in Perna viridis from the coastal waters of Malaysia: A compilation of 1998 data. Int. J. Adv. Applied Sci., 3: 1-10.
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  82. Yap, C.K. and W. Chew, 2014. Chapter 93: The Invasive Weed, Asystasia gangetica as a Biomonitor of Heavy Metal Bioavailability and Pollution. In: From Sources to Solution, Aris, A.Z., T.H.T. Ismail, R. Harun, A.M. Abdullah and M.Y. Ishak (Eds.)., Springer Science, Singapore, ISBN: 978-981-4560-70-2, pp: 519-523.

  83. Kumar, K., E. Saion, M.K. Halimah, C.K. Yap and M.S. Hamzah, 2014. Rare Earth Element (REE) in surface mangrove sediment by instrumental neutron activation analysis. J. Radioanalytical Nuclear Chem., 301: 667-676.
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  84. Krishnan, K., E. Saion, M.K. Halimah, C.K. Yap and M.S. Hamzah, 2014. Distribution of heavy metal. Copper in the surface sediments and soft tissues of Cerithidea obtusa by Atomic Absorption Spectroscopy (AAS). Int. J. Chem., 33: 1551-1557.

  85. Krishnan, K., E. Saion, M.K. Halimah, C.K. Yap and M.S. Hamzah, 2014. Distribution of heavy metal in the surface sediments of mangrove from west coast of Peninsular Malaysia. Int. J. Applic. Innovat. Eng. Manage., 3: 88-96.
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  86. Yee, E.Y.S., Z.Z. Zainuddin, A. Ismail, C.K. Yap and S.G. Tan, 2013. Identification of hybrids of painted and milky storks using FTA card-collected blood, molecular markers and morphologies. Biochem. Genet., 51: 789-799.
    CrossRef  |  PubMed  |  

  87. Yee, E.Y., Z. Zainal, A. Ismail, C.K. Yap and S.G. Tan, 2013. Molecular sex identification of painted storks (Mycteria leucocephala): Using FTA cards, horizontal PAGE and quick silver staining. J. Genet., 92: e15-e18.
    Direct Link  |  

  88. Yap, C.K., W.H. Cheng, C.C. Ong and S.G. Tan, 2013. Heavy metal contamination and physical barrier are main causal agents for the genetic differentiation of Perna viridis populations in peninsular Malaysia. Sains Malaysiana, 42: 1557-1564.
    Direct Link  |  

  89. Yap, C.K., A.A. Al-Zharany and E. Saion, 2013. Is water depth a major factor in the heavy metal concentrations of the sediment cores collected from the northern part of the Straits of Malacca? Pollut. Res., 32: 195-199.
    Direct Link  |  

  90. Yap, C.K., A. Noorhaidah and S.G. Tan, 2013. Relationships of copper concentrations between the different soft tissues of Telescopium telescopium and the surface sediments collected from tropical intertidal areas. Int. J. Chem., 5: 8-19.
    CrossRef  |  Direct Link  |  

  91. Yap, C.K., 2013. Variations of electrical conductivity between upstream and downstream of Langat River, Malaysia: Its significance as a single indicator of water quality deterioration. Pertanika J. Trop. Agric. Sci., 36: 299-309.

  92. Yap, C.K., 2013. Fe concentrations in the different soft tissues of Telescopium telescopium sampled from the intertidal mudflats areas of Peninsular Malaysia. Pollut. Res., 32: 229-234.

  93. Yap, C.K., 2013. Can the number of correlation coefficient (r value) as a statistical indicator of metal-polluted ecosystem? A comparison between polluted and unpolluted ecosystems. Int. J. Adv. Applied Sci., 2: 209-216.
    Direct Link  |  

  94. Yap, C.K. and W.S. Lo, 2013. Assessment of trace metal bioavailabilities and contamination by using different tissues of Anadara granosa collected from intertidal mudflats of Peninsular Malaysia. J. Sustainability Sci. Manage., 8: 11-21.

  95. Yap, C.K. and W.H. Cheng, 2013. Distributions of heavy metal concentrations in different tissues of the mangrove snail Nerita lineata. Sains Malaysiana, 42: 597-603.
    Direct Link  |  

  96. Yap, C.K. and W. Chew, 2013. Use of different tissues of horseshoe crabs Tachypleus gigas for biomonitoring heavy metal bioavailability and contamination in intertidal area of Peninsular Malaysia. Pollut. Res., 32: 1-8.
    Direct Link  |  

  97. Ong, G.H., C.K. Yap, M. Maziah, M.S. Hamzah and S.G. Tan, 2013. Centella asiatica: A potential candidate to access the uranium contamination in soil. J. Sustainability Sci. Manage., 8: 35-43.

  98. Ong, G.H., C.K. Yap, M. Maziah and S.G. Tan, 2013. Synergistic and antagonistic effects of zinc bioaccumulation with lead and antioxidant activities in Centella asiatica. Sains Malaysiana, 42: 1549-1555.
    Direct Link  |  

  99. Ong, G.H., C.K. Yap, M. Maziah and S.G. Tan, 2013. An investigation of arsenic contamination in peninsular Malaysia based on Centella asiatica and soil samples. Environ. Monitor. Assessmen, 185: 3243-3254.
    CrossRef  |  Direct Link  |  

  100. Ong, G.H., C.K. Yap, M. Maziah and S.G. Tan, 2013. Accumulation of heavy metals and antioxidative enzymes of Centella asiatica in relation to metals of the soils. Pertanika J. Trop. Agric. Sci., 36: 311-335.

  101. Ong, G.H., C.K. Yap, M. Mahmood, S.G. Tan and S. Hamzah, 2013. Barium levels in soils and Centella asiatica. Trop. Life Sci. Res., 24: 55-70.
    PubMed  |  Direct Link  |  

  102. Ng, Y.J.E., C.K. Yap, M.P. Zakaria, A.Z. Aris and S.G. Tan, 2013. Trace metal concentrations in the different parts of Perna viridis collected from some jetties in the Straits of Johore. Pollut. Res., 32: 9-19.

  103. Ng, Y.J.E., C.K. Yap, M.P. Zakaria, A.Z. Aris and S.G. Tan, 2013. Depuration of trace metals in transplanted Perna viridis from polluted site at Kg Pasir Puteh to relatively unpolluted sites at Kg Sg Melayu and Sg Belungkor in the Straits of Johore. J. Ind. Pollut. Control, 29: 1-6.

  104. Ng, Y.J.E., C.K. Yap, M.P. Zakaria, A.Z. Aris and S.G. Tan, 2013. Accumulation of trace metals in mussel Perna viridis transplant/ed from a relatively unpolluted site at Kg. Sg. Melayu to a polluted site at Kg. Pasir Puteh and to an unpolluted site at Sg Belungkor in the straits of Johore. Ecol. Environ. Conservat., 19: 27-31.

  105. Ng, Y.J.E., C.K. Yap, M.P. Zakaria and S.G. Tan, 2013. Assessment of heavy metal pollution in the straits of Johore by using transplanted caged mussels. Pertanika J. Sci. Technol., 21: 75-96.
    Direct Link  |  

  106. Ng, Y.J.E., C.K. Yap, M.P. Zakaria, A.Z. Aris and S.G. Tan, 2013. Trace metals in the shells of mussels Perna viridis transplanted from polluted to relatively unpolluted sites in the Straits of Johore: Shells as biomonitoring materials. Asian J. Microbiol. Biotechnol. Environ. Sci., 15: 5-8.

  107. Mirsadeghi, S.A., M.P. Zakaria, C.K. Yap and F. Gobas, 2013. Evaluation of the potential bioaccumulation ability of the blood cockle (Anadara granosa L.) for assessment of environmental matrices of mudflats. Sci. Total Environ., 454-455: 584-597.
    CrossRef  |  Direct Link  |  

  108. Cheng, W.H., C.K. Yap, M.P. Zakaria, A.Z. Aris and S.G. Tan, 2013. Cd and Zn in Nerita lineata collected from selected areas of the southern west coast of Peninsular Malaysia. J. Sustainability Sci. Manage., 8: 71-75.

  109. Yap, C.K., W.H. Cheng and S.G. Tan, 2012. Comparative Studies of Concentrations of Cu and Zn in the Surface Intertidal Sediments Collected from East, South and West Coasts of Peninsular Malaysia. In: Coastal Environments: Focus on Asian Coastal Regions, Subramanian, V. (Ed.)., Springer, Dordrecht, ISBN: 978-90-481-3002-3, pp: 130-143.

  110. Yap, C.K., S.M. Nasir, F.B. Edward and S.G. Tan, 2012. Anthropogenic inputs of heavy metals in the east part of the Johore Straits as revealed by their concentrations in the different soft tissues of Perna viridis (L.). Pertanika J. Trop. Agric. Sci., 35: 827-834.
    Direct Link  |  

  111. Yap, C.K., A. Shahbazi and M.P. Zakaria, 2012. Concentrations of heavy metals (Cu, Cd, Zn and Ni) and PAHs in Perna viridis collected from seaport and non-seaport waters in the Straits of Johore. Bull. Environ. Contaminat. Toxicol., 89: 1205-1210.
    CrossRef  |  Direct Link  |  

  112. Yap, C.K., A. Noorhaidah and S.G. Tan, 2012. Digestive cecum and tissue redistribution in gills of Telescopium telescopium as indicators of Ni bioavailabilities and contamination in tropical intertidal areas. Water Air Soil Pollut., 223: 2891-2905.
    CrossRef  |  Direct Link  |  

  113. Yap, C.K., A. Noorhaidah and S.G. Tan, 2012. Different Soft Tissues of Telescopium telescopium as Potential Biomonitoring Tissues of Zn Bioavailability in Malaysian Intertidal Mudflats. Nova Science Publishers Inc., New York, ISBN: 978-1-62100-529-2.

  114. Yap, C.K., 2012. The H-index in Elsevier's Scopus as an indicator of research achievement for young Malaysian scientists. Pertanika J. Sci. Technol., 20: 197-203.

  115. Yap, C.K., 2012. Recommended trace metal concentrations in reference materials IAEA-407 should not be used as tolerable limits. Asian J. Microbiol. Biotechnol. Environ. Sci., 14: 577-578.

  116. Yap, C.K., 2012. Mussel Watch in Malaysia: Past, Present and Future. Universiti Putra Malaysia Press, Serdang, ISBN: 978-967-344-264-5, Pages: 137.

  117. Yap, C.K., 2012. Distributions of Cu and Zn in the shell lipped part periostracum and soft tissues of Perna viridis: The potential of periostracum as a biomonitoring material for Cu contamination. Pertanika J. Trop. Agric. Sci., 35: 413-426.
    Direct Link  |  

  118. Yap, C.K., 2012. Critical but constructive comments on a paper by hadibrata et al. (2012) (DOI 10.1007/s11270-012-1095-7) Published in water, air and soil pollution. Water Air Soil Pollut., 223: 5803-5805.
    CrossRef  |  Direct Link  |  

  119. Yap, C.K., 2012. Byssus as a means of metal excretion route and high metal levels in fecal materials as metal retention: An experimental laboratory study using Perna viridis. Int. J. Adv. Applied Sci., 4: 191-196.
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  120. Yap, C.K., 2012. Application of factor analysis in geochemical fractions of heavy metals in the surface sediments of the offshore and intertidal areas of Peninsular Malaysia. Sains Malaysiana, 41: 389-394.
    Direct Link  |  

  121. Yap, C.K. and S.M. Al-Barwani, 2012. A comparative study of condition indices and heavy metals in Perna viridis population at Sebatu and Muar, Peninsular Malaysia. Sci. Malaysiana, 41: 1063-1069.
    Direct Link  |  

  122. Yap, C.K. and A. Noorhaidah, 2012. Distribution of heavy metal concentrations in the different soft and hard tissues of tropical mud-flat snail Telescopium telescopium (Family: Potamididae) collected From Sepang Besar River. Pertanika J. Trop. Agric. Sci., 35: 427-438.
    Direct Link  |  

  123. Rezaie-Atagholipour, M., A. Riyahi-Bakhtiari, M. Sajjadi, C.K. Yap, S. Ghaffari, Z. Ebrahimi-Sirizi and P. Ghezellou, 2012. Metal concentrations in selected tissues and main prey species of the annulated sea snake (Hydrophis cyanocinctus) in the Hara Protected Area, northeastern coast of the Persian Gulf, Iran. Mar. Pollut. Bull., 64: 416-421.
    CrossRef  |  Direct Link  |  

  124. Rashiq, M., C.K. Yap and F.B. Edward, 2012. Is a mussel processing site a point source of Zn contamination? Evidence of Zn remobilization from boiled mussel, Perna viridis. Pertanika J. Trop. Agric. Sci., 35: 199-207.
    Direct Link  |  

  125. Ong, G.H., C.K. Yap, M. Maziah, S.G. Tan and H. Suhaimi, 2012. Bioaccumulation of Cu and Zn in the local edible ulam Centella asiatica. J. Sustainability Sci. Manage., 7: 131-136.

  126. Chew, W.Y., C.K. Yap and S.G. Tan, 2012. Heavy metal concentrations in ceiling fan and roadside car park dust collected from residential colleges in Universiti Putra Malaysia, Serdang, Selangor. Pertanika J. Trop. Agric. Sci., 35: 75-83.
    Direct Link  |  

  127. Chew, W., C.K. Yap, A. Ismail, M.P. Zakaria and S.G. Tan, 2012. Mercury distribution in an invasive species (Asystasia gangetica) from Peninsular Malaysia. Sains Malaysiana, 41: 395-401.
    Direct Link  |  

  128. Cheng, W.H., C.K. Yap, A. Ismail and I.A. Rahim, 2012. Distribution and concentrations of Ni in tissues of the gastropod Nerita lineata collected from intertidal areas of Peninsular Malaysia. Pertanika J. Trop. Agric. Sci., 35: 723-736.
    Direct Link  |  

  129. Yap, C.K., T. Krishnan and W. Chew, 2011. Heavy metal concentration in ceiling fan dusts sampled at schools around Serdang Area, Selangor. Sains Malaysiana, 40: 569-575.
    Direct Link  |  

  130. Yap, C.K., M.W. Chee, S. Shamarina, F.B. Edward, W. Chew and S.G. Tan, 2011. Assessment of surface water quality in the Malaysian coastal waters by using multivariate analyses. Sains Malaysiana, 40: 1053-1064.
    Direct Link  |  

  131. Yap, C.K., M. Yazdani, F. Abdullah and S.G. Tan, 2011. Is the high Cu tolerance of Trichoderma atroviride isolated from the Cu-polluted sediment due to adaptation? An in vitro toxicological study. Sains Malaysiana, 40: 119-124.
    Direct Link  |  

  132. Yap, C.K., E.Y.J. Ng, W.H. Kwai and Y. Hatta, 2011. Background heavy metal concentrations (Cd, Cu, Ni, Pb, Fe and Zn) in Modiolus sp. collected from the coast waters of Peninsular Malaysia: A preliminary study. Asian J. Microbiol. Biotechnol. Environ. Sci., 13: 131-137.
    Direct Link  |  

  133. Yap, C.K., C.M. Chong and S.G. Tan, 2011. Lactate dehydrogenase in the guppy fish (Poecilia reticulata) as a biomarker of heavy-metal pollution in freshwater ecosystems. J. Sustainability Sci. Manage., 6: 240-246.

  134. Yap, C.K., C.M. Chong and S.G. Tan, 2011. Allozyme polymorphisms in horseshoe crabs, Carcinoscorpius rotundicauda, collected from polluted and unpolluted intertidal areas in Peninsular Malaysia. Environ. Monit. Assessment, 174: 389-400.
    CrossRef  |  Direct Link  |  

  135. Yap, C.K., A.R. Azmizan, M.S. Hanif and S.G. Tan, 2011. Use of different tissues of flat-tree oyster Isognomon alatus as biomonitors of bioavailabilities and contamination by Zn in the mangrove area of Peninsular Malaysia. J. Sustainability Sci. Manage., 6: 230-239.

  136. Yap, C.K., A.R. Azmizan and M.S. Hanif, 2011. Biomonitoring of trace metals (Fe, Cu, and Ni) in the mangrove area of peninsular Malaysia using different soft tissues of flat tree Oyster Isognomon alatus. Water Air Soil Pollut., 218: 19-36.
    CrossRef  |  Direct Link  |  

  137. Yap, C.K., A.G.M. Azlan and S.G. Tan, 2011. Accumulation and depuration of Cu and Zn in the blood cockle Anadara granosa (Linnaeus) under laboratory conditions. Pertanika J. Trop. Agric. Sci., 34: 75-82.

  138. Yap, C.K., A. Noorhaidah and S.G. Tan, 2011. Zn Concentrations in the Different Soft Tissues of Telescopium telescopium and their Relationships with Zn Speciation by Sequential Extraction in Surface Sediments: A Statistical Multiple Linear Stepwise Regression Analysis. In: Gastropods: Diversity, Habitat and Genetics, Bianchi, A.M. and J.N. Fields (Eds.)., Nova Science Publishers, New York, ISBN: 978-1-61324-695-5, pp: 127-148.

  139. Yap, C.K., A. Ismail and S.G. Tan, 2011. Mercury concentrations in the different soft tissues and byssus of Perna viridis (L.) collected from the west coast of Peninsular Malaysia. Asian J. Microbiol. Biotechnol. Environ. Sci., 13: 237-242.
    Direct Link  |  

  140. Yap, C.K. and W.Y. Chew, 2011. Heavy metal concentrations the indoor fan dusts collected from residential areas near cities and recreational areas of Peninsular Malaysia: Possibility of atmospheric pollution. Asian J. Microbiol. Biotechnol. Environ. Sci., 13: 151-156.
    Direct Link  |  

  141. Yap, C.K. and W. Chew, 2011. A higher metal bioavailability and contamination of trace metals in Pantai Lido than Sungai Semerak: Evidence from trace metal concentrations in Polymesoda expansa and surface sediments. Malaysian Applied Biol., 40: 55-59.
    Direct Link  |  

  142. Yap, C.K. and T. Arai, 2011. Variations of organotin bioaccumulation in the Salmo trutta and Anguilla japonica collected from freshwater and seawater habitats: A re-interpretation from biomonitoring point of view. Asian J. Microbiol. Biotechnol. Environ. Sci., 13: 595-598.
    Direct Link  |  

  143. Yap, C.K. and S.G. Tan, 2011. Ecotoxicological Genetic Studies on the Green-Lipped Mussel Perna viridis in Malaysia. In: Mussels: Anatomy, Habitat and Environmental Impact, McGevin, L.E. (Ed.)., Nova Science Publishers, New York, ISBN: 978-1-61761-763-8, pp: 221-244.

  144. Yap, C.K. and S.G. Tan, 2011. A study on the potential of the periostracum of Perna viridis as a biomonitoring material for Pb in tropical coastal waters based on correlation analysis. Sains Malaysiana, 40: 809-819.

  145. Yap, C.K. and R.A. Ismail, 2011. Relationships of distribution of macrobenthic invertebrates and the physico-chemical parameters from Semenyih river by using correlation and multiple linear stepwise regression analyses. Pertanika J. Trop. Agric. Sci., 34: 229-245.
    Direct Link  |  

  146. Yap, C.K. and I.M. Taufik, 2011. Chemical speciation of heavy metals in the dust samples collected from residential area of peninsular Malaysia. Asian J. Microbiol. Biotechnol. Environ. Sci., 13: 189-193.

  147. Yap, C.K. and F.B. Edward, 2011. Distribution of heavy metals concentrations in the different parts of the clam Polymesoda erosa: The potentials as a biomonitor. Asian J. Microbiol. Biotechnol. Environ. Sci., 13: 409-418.
    Direct Link  |  

  148. Yap, C.K. and C.H. Wong, 2011. Assessment Cu, Ni and Zn pollution in the surface sediments in the southern Peninsular Malaysia using cluster analysis, ratios of geochemical nonresistant to resistant fractions and geochemical indices. Environ. Asia, 4: 53-61.
    Direct Link  |  

  149. Yap, C.K. and B.H. Pang, 2011. Assessment of Cu, Pb and Zn contamination in sediment of north western Peninsular Malaysia by using sediment quality values and different geochemical indices. Environ. Monit. Assess., 183: 23-39.
    CrossRef  |  Direct Link  |  

  150. Yap, C.K. and B.H. Pang, 2011. Anthropogenic concentrations of Cd, Ni and Zn in the intertidal and drainage sediments collected from north western Peninsular Malaysia. Pertanika J. Sci. Technol., 19: 93-107.

  151. Yap, C.K. and A.Z. Aris, 2011. Evidence of seawater incursion due to over-exploitation of groundwater in a small tropical island: A statistical multivariate analysis. Asian J. Microbiol. Biotechnol. Environ. Sci., 13: 419-422.
    Direct Link  |  

  152. Yap, C.K. and A. Noorhaidah, 2011. Gill and digestive caecum of Telescopium telescopium are biomonitors of Pb bioavailability and contamination by Pb in the tropical intertidal area. Sains Malaysiana, 40: 1075-1085.

  153. Yap, C.K. and A. Noorhaidah, 2011. Assessment of bioavailability and contamination by Cd in the tropical intertidal area, using different soft tissues of Telescopium telescopium: Statistical multivariate analyses. J. Sustainability Sci. Manage., 6: 193-205.
    Direct Link  |  

  154. Ong, G.H., C.K. Yap, M. Maziah and S.G. Tan, 2011. Heavy metal accumulation in a medicinal plant Centella asiatica from Peninsular Malaysia. J. Biol. Sci., 11: 146-155.

  155. Ong, G.H., C.K. Yap, M. Marziah and S.G. Tan, 2011. The effect of Cu exposure on the bioaccumulation of Zn and antioxidant activities in different parts of Centella asiatica. Asian J. Microbiol. Biotechnol. Environ. Sci., 13: 387-392.
    Direct Link  |  

  156. Mirsadeghi, S.A., M.P. Zakaria, C.K. Yap and A. Shahbazi, 2011. Risk assessment for the daily intake of polycyclic aromatic hydrocarbons from the ingestion of cockle (Anadara granosa) and exposure to contaminated water and sediments along the west coast of Peninsular Malaysia. J. Environ. Sci., 23: 336-345.
    CrossRef  |  Direct Link  |  

  157. Chew, W., C.K. Yap, A. Ismail, M.P. Zakaria and S.G. Tan, 2011. Possibility of Hg redistribution in Tridax procumbens due to Hg contamnination. Asian J. Microbiol. Biotechnol. Environ. Sci., 13: 393-398.
    Direct Link  |  

  158. Yee, Y.S.E., Z. Zainal, A. Ismail, C.K. Yap and S.G. Tan, 2010. DNA horizontal polyacrylmide gel electrophoresis. Genetik, 16: 22-25.

  159. Yazdani, M., C.K. Yap, F. Abdullah and S.G. Tan, 2010. An in vitro study on the adsorption, absorption and uptake capacity of Zn by the bioremediator Trichoderma atroviride. Environ. Asia, 3: 53-59.
    Direct Link  |  

  160. Yazdani, M., C.K. Yap and F. Abdullah, 2010. Adsorption and absorption of Cu in Trichoderma atroviride. Pertanika J. Trop. Agric. Sci., 33: 71-77.
    Direct Link  |  

  161. Yap, C.K., W.S. Lo, F.B. Edward and S.G. Tan, 2010. Multivariate analysis of heavy metal concentrations in the different tissues of four intertidal clams from Peninsular Malaysia. J. Sustainability Sci. Manage., 5: 110-122.

  162. Yap, C.K., S.M. Ruszaidi, W.H. Cheng and S.G. Tan, 2010. Heavy-metal concentrations in the mangrove snail, nerita lineata and surface sediments collected from Klang River Estuary, Selangor, Malaysia. J. Sustainability Sci. Manage., 5: 1-12.

  163. Yap, C.K., S.M. Ruszaidi, F.B. Edward and S.G. Tan, 2010. Heavy metal concentrations in the different tissues of horseshoe crabs collected from polluted and relative unpolluted intertidal sites in Peninsular Malaysia. Malaysian J. Sci., 29: 137-152.

  164. Yap, C.K., S.M. Ruszaidi and W.H. Cheng, 2010. Different tissues of rock oyster Saccostrea cucullata as biomonitors of trace metal bioavailabilities in the Penang coastal waters, Malaysia. Res. J. Chem. Environ., 14: 17-21.

  165. Yap, C.K., M.R.M. Fitri, Y. Mazyhar and S.G. Tan, 2010. Effects of metal-contaminated soils on the accumulation of heavy metals in different parts of Centella asiatica: A laboratory study. Sains Malaysiana, 39: 347-352.
    Direct Link  |  

  166. Yap, C.K., M.N.D. Hisyam, F.B. Edward and S.G. Tan, 2010. Concentrations of heavy metal in different parts of the gastropod, Faunus ater (Linnaeus), collected from intertidal areas of Peninsular Malaysia. Pertanika J. Trop. Agric. Sci., 33: 45-60.
    Direct Link  |  

  167. Yap, C.K., M.A. Mashinshian, A. Ismail and M.P. Zakaria, 2010. Relationships and comparative studies of heavy metals and organic PAH compounds in the soft tissues Perna viridis. Res. J. Chem. Environ., 14: 56-61.
    Direct Link  |  

  168. Yap, C.K., F.B. Edward and S.G. Tan, 2010. The length of the crystalline style of Perna viridis in relation to shell length, shell width and shell height: Data for future reference. J. Sustainability Sci. Manage., 5: 39-46.
    Direct Link  |  

  169. Yap, C.K., F.B. Edward and S.G. Tan, 2010. Similarities and differences of metal distributions in the tissues of molluscs by using multivariate analyses. Environ. Monit. Assessment, 165: 39-53.
    CrossRef  |  Direct Link  |  

  170. Yap, C.K., F.B. Edward and S.G. Tan, 2010. Identification of potential intertidal bivalves as biomonitors of heavy-metal contamination by using bivalve-sediment accumulation factors (BSAFs). J. Sustainability Sci. Manage., 5: 29-38.

  171. Yap, C.K., F.B. Edward and S.G. Tan, 2010. Heavy metal concentrations (Cu, Pb, Ni and Zn) in the surface sediments from a semi-enclosed intertidal water, the Johore Straits: Monitoring data for future reference. J. Sustainability Sci. Manage., 5: 44-57.

  172. Yap, C.K., A. Ismail and S.G. Tan, 2010. A baseline study on mercury concentrations in the surface sediments of the Straits of Malacca collected during four sampling cruises conducted between 1998-2000. Asian J. Microbiol. Biotechnol. Environ. Sci., 12: 11-17.

  173. Yap, C.K., 2010. The gill of Perna viridis as a major route entry for Pb: A laboratory study. Malaysian Applied Biol., 39: 15-18.
    Direct Link  |  

  174. Yap, C.K., 2010. Relationships between biodiversity indices of macrobenthic invertebrates and some water chemical parameters in Semenyih River. Malaysian Applied Biol., 39: 63-67.
    Direct Link  |  

  175. Yap, C.K., 2010. Normalization of heavy metal concentrations of the tropical coastal surface sediments by using the metal geochemical resistant fraction. Malaysian Applied Biol., 39: 47-50.
    Direct Link  |  

  176. Yap, C.K., 2010. High metal contamination and bioavailability might not be necessarily related to high human activity by direct observation: Evidence from metal data in sediments and intertidal snails collected from an unknown anthropogenic site in Malaysia. Asian J. Microbiol. Biotechnol. Environ. Sci., 2: 1-5.

  177. Yap, C.K. and W.H. Cheng, 2010. Depuration of gut contents in the intertidal snail Nerita lineata is not necessary for the study of heavy metal contamination and bioavailability: A laboratory study. Pertanika J. Trop. Agric. Sci., 33: 167-170.
    Direct Link  |  

  178. Yap, C.K. and I.M.H.M. Khairul, 2010. A comparative study of heavy metal concentrations in the clam Corbicula javanica and surface sediments collected from clean and polluted sites of Langat River, Selangor. Malaysian Applied Biol., 39: 57-61.
    Direct Link  |  

  179. Yap, C.K. and F.B. Edward, 2010. Distribution of heavy metals in the different parts of Cerithidea obtusa and the relationships between metal distribution and allometric parameters of the snail. Environ. Asia, 3: 38-48.
    Direct Link  |  

  180. Yap, C.K. and F.B. Edward, 2010. A preliminary study on the use of Gastropod-Sediment Accumulation Factors (GSAFs) to identify gastropods as potential biomonitors of heavy metals contamination. Malaysian Applied Biol., 39: 1-6.
    Direct Link  |  

  181. Yap, C.K. and A.G.M. Azlan, 2010. Muddy sediments acting as a sink of Cu and Zn: Evidence from a laboratory study by using muddy sediment plus cockle Anadara granosa. Malaysian Applied Biol., 39: 41-44.

  182. Shahbazi, A., M.P. Zakaria, C.K. Yap, S.G. Tan and S. Surif et al., 2010. Use of different tissues of Perna viridis as biomonitors of polycyclic aromatic hydrocarbons (PAHs) in the coastal waters of Peninsular Malaysia. Environ. Forensics, 11: 248-263.
    CrossRef  |  Direct Link  |  

  183. Shahbazi, A., M.P. Zakaria, C.K. Yap, S. Surif and A.R. Bakhtiari et al., 2010. Spatial distribution and sources of polycyclic aromatic hydrocarbons (PAHs) in green mussels (Perna viridis) from coastal areas of Peninsular Malaysia: Implications for source identification of perylene. Int. J. Environ. Anal. Chem., 90: 14-30.
    CrossRef  |  Direct Link  |  

  184. Romeo, M.L., A. Ismail, C.K. Yap and A.R. Ismail, 2010. The status of migratory shorebirds diversity in ramsar site during southward and northward migration in Kuala Gula birds sanctuary. Stilt, 58: 51-56.

  185. Rezaee, K., E.B. Saion, C.K. Yap, M.R. Abdi and A.R. Bakhtiari, 2010. Vertical distribution of heavy metals and enrichment in the South China Sea sediment cores. Int. J. Environ. Res., 4: 877-886.
    Direct Link  |  

  186. Noorhaidah, A. and C.K. Yap, 2010. Correlations between speciation of Zn in sediment and their concentrations in different soft tissue of Telescopium telescopium from the intertidal area of Peninsular Malaysia. Pertanika J. Trop. Agric. Sci., 33: 79-90.

  187. Lomoljo, R.M., A. Ismail, C.K. Yap and I.A. Rahim, 2010. The status of heavy metal levels in a Ramsar site, Kuala Gula bird sanctuary: The impact of the anthropogenic inputs. Toxicol. Environ. Chem., 92: 1953-1963.
    CrossRef  |  Direct Link  |  

  188. Ikram, M.M., A. Ismail, C.K. Yap and A.A.N. Azwady, 2010. Levels of heavy metals (Zn, Cu, Cd and Pb) in mudskippers (Periophthalmodon schlosseri) and sediments collected from intertidal areas at Morib and Remis, Peninsular Malaysia. Toxicol. Environ. Chem., 92: 1471-1486.
    CrossRef  |  Direct Link  |  

  189. Edward, F.B., C.K. Yap and S.G. Tan, 2010. Interspecific variation of heavy metal concentrations in the different parts of tropical intertidal bivalves. Toxicol. Environ. Chem., 92: 1121-1134.

  190. Edward, F.B., C.K. Yap and A. Ismail, 2010. Bioaccumulation and distribution of heavy metals (Cd, Cu, Fe, Ni, Pb and Zn) in the different tissues of Chicoreus capucinus Lamark (Mollusca: Muricidae) collected from Sungai Janggut, Kuala Langat, Malaysia. Environ. Asia, 3: 65-71.
    Direct Link  |  

  191. Yazdani, M., C.K. Yap, F. Abdullah and S.G. Tan, 2009. Trichoderma atroviride as a bioremediator of Cu pollution: An in vitro study. Toxicol. Environ. Chem., 91: 1305-1314.
    CrossRef  |  Direct Link  |  

  192. Yap, C.K., Y. Aziran and W.H. Cheng, 2009. Distribution of heavy metal concentrations in the different soft tissues and shells of the bivalve Psammotaea elongata and gastropod Faunus ater collected from Pantai Sri Tujuh, Kelantan. J. Sustainability Sci. Manage., 4: 66-74.

  193. Yap, C.K., W.H. Cheng, A. Ismail, A.R. Ismail and S.G. Tan, 2009. Biomonitoring of heavy metal concentrations in the intertidal area of Peninsular Malaysia by using Nerita lineata. Toxicol. Environ. Chem., 91: 29-41.
    CrossRef  |  Direct Link  |  

  194. Yap, C.K., S.M.R. Razeff, F.B. Edward and S.G. Tan, 2009. Heavy metal concentrations (Cu, Fe, Ni and Zn) in the clam, Glauconome virens, collected from the northern intertidal areas of Peninsular Malaysia. Malaysian Applied Biol., 38: 29-35.
    Direct Link  |  

  195. Yap, C.K., S.M. Ruszaidi and S.G. Tan, 2009. A preliminary study on the heavy metal concentrations in the barnacle Balanus sp. collected from penang bridge and sungai semilang, penang. Malaysian Applied Biol., 38: 65-70.

  196. Yap, C.K., M.S. Fairuz, K.L. Yeow, M.Y. Hatta, A. Ismail, A.R. Ismail and S.G. Tan, 2009. Dissolved heavy metals and water quality in the surface waters of rivers and drainages of the west Peninsular Malaysia. Asian J. Water Environ. Pollut., 6: 51-59.

  197. Yap, C.K., M. Yazdani and S.G. Tan, 2009. The identification of point sources in a river receiving industrial metal effluents at the Serdang Industrial Area, Selangor. J. Sustainability Sci. Manage., 4: 18-26.

  198. Yap, C.K., K.L. Yeow, F.B. Edward and S.G. Tan, 2009. Revealing copper contamination at penang industrial area by using Malaysian mussel approach. Asian J. Microbiol. Biotechnol. Environ. Sci., 11: 683-689.

  199. Yap, C.K., F.B. Edward, B.H. Pang, A. Ismail, S.G. Tan and H.A. Jambari, 2009. Distribution of heavy metal concentrations (Cu, Cd, Zn, Pb, Ni and Fe) in the different soft tissues of Pomacea insularum and sediments collected from a polluted site at Juru River, Penang. Toxicol. Environ. Chem., 91: 17-27.
    CrossRef  |  Direct Link  |  

  200. Yap, C.K., F.B. Edward and B.H. Pang, 2009. A comparative study of distribution of heavy metal concentrations in Pomacea insularum collected from polluted and unpolluted sites of the freshwater ecosystem in Malaysia. Wetland Sci., 7: 75-82.
    Direct Link  |  

  201. Yap, C.K., C.B. Che Mohd Zaidi, F.B. Edward, A. Ismail and S.G. Tan, 2009. Ni, Pb and Zn concentrations in the green-lipped mussel, Perna viridis collected from the northern coastal waters of Peninsular Malaysia. J. Sustainability Sci. Manage., 4: 10-19.

  202. Yap, C.K., A.R. Kamarul and F.B. Edward, 2009. Heavy metal concentrations (Cd, Cu, Ni, Pb, Fe and Zn) in the different soft tissues and shells of Pholas orientalis collected from Sekinchan and Pantai Remis, Selangor. Malaysian Applied Biol., 38: 21-27.
    Direct Link  |  

  203. Yap, C.K., A.D. Dezairee, F.B. Edward and S.G. Tan, 2009. Heavy metal concentrations in the horse shoe crab Tachypleus gigas and sediments collected from Sungai Rambah, western Johore, Peninsular Malaysia. Malaysian Fish. J., 8: 1-6.
    Direct Link  |  

  204. Yap, C.K., A. Noorhaidah, A. Azlan, A.A. Nor Azwady and A. Ismail et al., 2009. Telescopium telescopium as potential biomonitors of Cu, Zn and Pb for the tropical intertidal area. Ecotoxicol. Environ. Saf., 72: 496-506.
    CrossRef  |  Direct Link  |  

  205. Yap, C.K., A. Ismail, J. Koyama and S.G. Tan, 2009. A preliminary study on the concentrations of Cu and Zn in Java Medaka Oryzias javanicus and sediments collected from some estuaries in the west coast of Peninsular Malaysia. Asian J. Microbiol. Biotechnol. Environ. Sci., 11: 241-246.

  206. Yap, C.K., A. Ismail and S.G. Tan, 2009. Effect of body size on heavy metal contents and concentrations in green-lipped mussel Perna viridis (Linnaeus) from Malaysian coastal waters. Pertanika J. Sci. Technol., 17: 61-68.

  207. Yap, C.K., A. Ismail and S.G. Tan, 2009. Can the tolerance of aerial exposure of the green-lipped mussel Perna viridis (l.) as a potential biomonitoring tool to assess Cd and Cu contamination? A laboratory study. Asian J. Microbiol. Biotechnol. Environ. Sci., 11: 263-268.

  208. Yap, C.K., 2009. An ecological viewpoint on the variations of water temperature, salinity, conductivity, pH and dissolved oxygen during a 45-minute tidal outflow at a small tropical estuary. Res. J. Chem. Environ., 13: 86-92.
    Direct Link  |  

  209. Yap, C.K., 2009. Acceptance and rejection of peer-reviewed articles in environmental sciences: My personal publication experience. Pertanika J. Trop. Agric. Sci., 32: 25-27.
    Direct Link  |  

  210. Yap, C.K. and W.H. Cheng, 2009. Heavy metal concentrations in Nerita lineata: The potential as a biomonitor for heavy metal bioavailability and contamination in the tropical intertidal area. Marine Biodiversity Records, Vol. 2. 10.1017/S1755267209000505.
    CrossRef  |  

  211. Yap, C.K. and F.B. Edward, 2009. The different capability of metal uptake in the shell of Perna viridis compared to the different soft tissues: A statistical approach. J. Sustainability Sci. Manage., 4: 38-48.

  212. Yap, C.K. and F.B. Edward, 2009. Heavy metal distribution in the different parts of Cerithidea obtusa by using multivariate analysis. Malaysian J. Sci., 28: 33-38.

  213. Yap, C.K. and F.B. Edward, 2009. Heavy metal concentrations in the different tissues of Chicoreous capucinus: The significance as a biomonitor. Malaysian Applied Biol., 38: 17-21.
    Direct Link  |  

  214. Yap, C.K. and A. Mohd Azri, 2009. Heavy metal concentration (Cd, Cu, Fe, Ni, Pb and Zn) in clam, Polymesoda erosa collected from intertidal area of Tok Bali and Kuala Kemasin, Kelantan. Malaysian Applied Biol., 38: 71-74.

  215. Ong, C.C., K. Yusoff, C.K. Yap and S.G. Tan, 2009. Genetic characterisation of Perna viridis in Peninsular Malaysia using microsatellite markers. J. Genet., 88: 153-163.
    CrossRef  |  Direct Link  |  

  216. Lomoljo, R.M., A. Ismail and C.K. Yap, 2009. Nitrate, ammonia, phosphate concentrations in the surface water of Kuala Gula Bird Sanctuary, west coast of Peninsular Malaysia. Pertanika J. Trop. Agric. Sci., 32: 1-5.
    Direct Link  |  

  217. Ikram, M.M., A. Ismail, C.K. Yap and N.A.A. Aziz, 2009. Zinc and copper concentrations in two species of intertidal crabs from the middle of the west coast of Peninsular Malaysia. Wetland Sci., 7: 218-229.

  218. Elsie Yee, Y.S., Z. Zainal, A. Ismail, C.K. Yap and S.G. Tan, 2009. A simple protocol to isolate DNA from malaysian stork blood collected on fta® cards. Genetik, 14: 20-22.

  219. Edward, F.B., C.K. Yap, A. Ismail and S.G. Tan, 2009. Interspecific variation of heavy metal concentrations in the different parts of tropical intertidal bivalves. Water Air Soil Pollut., 196: 297-309.
    CrossRef  |  Direct Link  |  

  220. Amin, B., I. Nurrachmi, A. Ismail and C.K. Yap, 2009. Heavy metal concentrations in the intertidal gastropod Nerita lineata and their relationships to those in its habitats: A case study in Dumai coastal waters. Wetland Sci., 7: 351-357.

  221. Amin, B., A. Ismail, A. Arshad, C.K. Yap and M.S. Kamarudin, 2009. Gastropod assemblages as indicators of sediment metal contamination in mangroves of Dumai, Sumatra, Indonesia. Water Air Soil Pollut., 201: 9-18.
    CrossRef  |  Direct Link  |  

  222. Amin, B., A. Ismail, A. Arshad, C.K. Yap and M.S. Kamarudin, 2009. Anthropogenic impacts on heavy metal concentrations in the coastal sediments of Dumai, Indonesia. Environ. Monitoring Assess., 148: 291-305.
    CrossRef  |  Direct Link  |  

  223. Yap, C.K., Y. Hatta, F.B. Edward and S.G. Tan, 2008. Distribution of heavy metal concentrations (Cd, Cu, Ni, Fe and Zn) in the different soft tissues and shells of wild mussels Perna viridis collected from Bagan Tiang and Kuala Kedah. Malaysian Applied Biol., 37: 1-10.
    Direct Link  |  

  224. Yap, C.K., Y. Hatta, F.B. Berandah and S.G. Tan, 2008. Comparison of heavy metal concentrations (Cd, Cu, Fe, Ni and Zn) in the shells and different soft tissues of Anadara granosa collected from Jeram, Kuala Juru and Kuala Kurau, Peninsular Malaysia. Pertanika J. Trop. Agric. Sci., 31: 205-215.
    Direct Link  |  

  225. Yap, C.K., W.H. Cheng and S.G. Tan, 2008. Comparative studies of concentrations of Cu and Zn in the surface intertidal sediments collected from east, south and west coasts of Peninsular Malaysia. Asian J. Water Environ. Pollut., 5: 23-29.
    CrossRef  |  Direct Link  |  

  226. Yap, C.K., M.S. Fairuz, W.H. Cheng and S.G. Tan, 2008. Erratum: Distribution of Ni and Zn in the surface sediments collected from drainages and intertidal area in Selangor. Pertanika J. Trop. Agric. Sci., 31: 79-89.

  227. Yap, C.K., M.S. Fairuz, W.H. Cheng and S.G. Tan, 2008. Distribution of Ni and Zn in the surface sediments collected from drainages and intertidal area in Selangor. Pertanika J. Trop. Agric. Sci., 31: 79-90.
    Direct Link  |  

  228. Yap, C.K., M.S. Fairuz, C. Nelson, A. Noorhaidah and S.G. Tan, 2008. Comparison of heavy metal concentrations in the different parts of Telescopium telescopium collected from a relatively less polluted site at Sungai Janggut and a polluted site at Kuala Juru. Malaysian Fish. J., 7: 41-46.

  229. Yap, C.K., M.S. Fairuz and W.H. Cheng, 2008. How elevated of Cd, Cu and Pb levels in the surface sediments collected from drainage receiving metal industrial effluents ? Comparison with metal industrial drainage and intertidal sediments in Selangor, Malaysia. Asian J. Microbiol. Biotechnol. Environ. Sci., 10: 385-391.

  230. Yap, C.K., J. Norharfiza, A.R. Ismail and M.K. Izwan, 2008. Biodiversity of macrobenthic invertebrates in the Semenyih River: A revisited study. Asian J. Microbiol. Biotechnol. Environ. Sci., 10: 715-723.

  231. Yap, C.K., F.B. Edward, R.A.A. Emila, F.I. Ainey, A. Ismail, S.G. Tan and Y. Sharizat, 2008. Determination of contamination and bioavailabilities of heavy metals (Cu, Cd, Zn, Pb and Ni) in the serdang urban lake by using guppy fish Poecilia reticulata. Trends Applied Sci. Res., 3: 69-75.
    CrossRef  |  Direct Link  |  

  232. Yap, C.K., A.M. Hafetz and S.G. Tan, 2008. Heavy metal concentrations (Cd, Cu, Fe, Pb and Zn) in different tissues of horseshoe crabs (Tachypleus gigas) collected from some intertidal areas of Johore, peninsular Malaysia. Malaysian Applied Biol., 37: 35-40.

  233. Yap, C.K., 2008. High concentrations of Cu and Zn in the surface sediments are not necessarily related to high total organic matters in the sediments: An evidence of the metal data in the ignited sediments. Malaysian Applied Biol., 37: 57-61.
    Direct Link  |  

  234. Yap, C.K. and S.G. Tan, 2008. Heavy metal pollution in the Juru River Basin receiving industrial effluents: The need for biochemical and molecular studies in the edible cockles Anadara granosa. Malaysian Applied Biol., 37: 63-68.
    Direct Link  |  

  235. Yap, C.K. and A. Noorhaidah, 2008. An evidence of Pb redistribution in the different soft tissues of Telescopium telescopium collected from a Pb-contaminated intertidal site. Asian J. Microbiol. Biotechnol. Environ. Sci., 10: 463-468.

  236. Yap, C.K. and A. Ismail, 2008. Heavy metal (Cd, Cu, Pb and Zn) levels in the suspended particulate matter of the public water supply. Malaysian Applied Biol., 37: 69-73.
    Direct Link  |  

  237. Ong, C.C., C.H. Teh, S.G. Tan, K. Yusoff and C.K. Yap, 2008. Eleven novel polymorphic microsatellite DNA markers from the green-lipped mussel, Perna viridis. Russian J. Genet., 44: 498-500.
    CrossRef  |  Direct Link  |  

  238. Ong, C.C., C.H. Teh, S.G. Tan, K. Yusoff and C.K. Yap, 2008. Eleven novel polymorphic microsatellite DNA markers from the green-lipped mussel, Perna viridis. Genetika, 44: 574-576.
    CrossRef  |  Direct Link  |  

  239. Amin, B., A. Ismail and C.K. Yap, 2008. Heavy metal concentrations in sediments and intertidal gastropod Nerita lineata from two opposing sites in the straits of Malacca. Wetland Sci., 6: 411-421.

  240. Amin, B., A. Ismail and C.K. Yap, 2008. Distribution and speciation of Zn and Pb in coastal sediments of Dumai Sumatera, Indonesia. Toxicol. Environ. Chem., 90: 609-623.
    CrossRef  |  Direct Link  |  

  241. Yap, C.K., F.B. Edward and S.G. Tan, 2007. Determination of heavy metal distributions in the green-lipped mussel Perna viridis as bioindicators of heavy metal contamination in the johore straits and Senggarang, Peninsular Malaysia. Trends Applied Sci. Res., 2: 284-294.
    CrossRef  |  Direct Link  |  

  242. Yap, C.K., B.H. Pang, M.S. Fairuz, Y.I. Hoo and S.G. Tan, 2007. Heavy metal (Cd, Cu, Ni, Pb and Zn) pollution in surface sediments collected from drainages receiving different anthropogenic sources from Peninsular Malaysia. Wetland Sci., 5: 97-104.

  243. Yap, C.K., B.H. Chua, C.H. Teh, S.G. Tan and A. Ismail, 2007. Patterns of RAPD markers and heavy metal concentrations in Perna viridis (L.), collected from metal-contaminated and uncontaminated coastal waters: Are they correlated with each other? Russian J. Genet., 43: 544-550.
    CrossRef  |  Direct Link  |  

  244. Yap, C.K., B.H. Chua, C.H. Teh, S.G. Tan and A. Ismail, 2007. Patterns of RAPD markers and heavy metal concentrations in Perna viridis (L.), collected from metal-contaminated and uncontaminated coastal waters: Are they correlated with each other? Genetika, 43: 1-7.

  245. Yap, C.K., A.G.M. Azlan, W.H. Cheng and S.G. Tan, 2007. Toxicities and tolerances of Cu in the blood cockle Anadara granosa (Linnaeus) under laboratory conditions. Malaysian Applied Biol., 36: 41-45.

  246. Yap, C.K., A. Ismail, S.G. Tan, H. Omar and J. Koyama, 2007. Tolerance of high inorganic mercury of Perna viridis: Laboratory studies of its accumulation, depuration and distribution. J. Applied Sci. Environ. Manage., 11: 119-125.
    Direct Link  |  

  247. Yap, C.K., A. Ismail, S.G. Tan and A.R. Ismail, 2007. The distribution of the heavy metals (Cu, Pb and Zn) in the soft and hard tissues of the green-lipped mussel Perna viridis (Linnaeus) collected from Pasir Panjang, Peninsular Malaysia. Pertanika J. Trop. Agric. Sci., 30: 1-10.
    Direct Link  |  

  248. Yap, C.K., A. Ismail, C.H. Low and S.G. Tan, 2007. Interpretation of Cu and Zn contamination in the aquatic environment of Peninsular Malaysia with special reference to a polluted river, Sepang River. Wetland Sci., 5: 311-321.

  249. Yap, C.K., A. Ismail and S.G. Tan, 2007. Heavy metal concentrations in indoor fan dusts of residential areas: A preliminary study. Malaysian Applied Biol., 36: 47-49.

  250. Yap, C.K., A. Ismail and P.K. Chiu, 2007. Water quality and dissolved heavy metal concentrations in surface water collected from Kelana Jaya Lakes. Asian J. Water Environ. Pollut., 4: 187-190.

  251. Yap, C.K. and S.G. Tan, 2007. Iron concentrations in the byssus and soft tissues of the green-lipped mussel Perna viridis (L.): Byssus as an excretion route of Fe and Fe bioavailability in the coastal waters. Indian J. Mar. Sci., 36: 227-234.

  252. Yap, C.K. and S.G. Tan, 2007. Changes of allozymes (GOT, EST and ME) of perna viridis subjected to Zinc stress: A laboratory study. J. Applied Sci., 7: 3111-3114.
    CrossRef  |  Direct Link  |  

  253. Al-Barwani, S.M., A. Arshad, S.M.N. Amin, S.B. Japar, S.S. Siraj and C.K. Yap, 2007. Population dynamics of the green mussel Perna viridis from the high spat-fall coastal water of Malacca, Peninsular Malaysia. Fish. Res., 84: 147-152.
    Direct Link  |  

  254. Yap, C.K., M.S. Choh, F.B. Edward, A. Ismail and S.G. Tan, 2006. Comparison of heavy metal concentrations in surface sediment of Tanjung Piai wetland with other sites receiving anthropogenic inputs along the south western coast of Peninsular Malaysia. Wetland Sci., 4: 48-57.

  255. Yap, C.K., A.R. Ismail, M.Z. Azrina, A. Ismail and S.G. Tan, 2006. The influential of physico-chemical parameters on the distributions of oligochateas (Limnodrilus sp.) at the polluted downstream of the tropical Langat River, Peninsular Malaysia. J. Applied Sci. Environ. Manage., 10: 135-140.
    CrossRef  |  Direct Link  |  

  256. Yap, C.K., A. Ismail, W.H. Cheng, F.B. Edward and S.G. Tan, 2006. Crystalline style and byssus of Perna viridis as indicators of Ni bioavailabilities and contamination in coastal waters of peninsular malaysia. Malaysian Applied Biol., 35: 7-13.

  257. Yap, C.K., A. Ismail, W.H. Cheng and S.G. Tan, 2006. Crystaline and tissue redistribution in Perna viridis as indicators of Cu and Pb bioavailabilities and contamination in coastal waters. Ecotoxicol. Environ. Saf., 63: 413-423.
    Direct Link  |  

  258. Yap, C.K., A. Ismail, S.G. Tan and A.R. Ismail, 2006. The impact of anthropogenic activities on heavy metal (Cd, Cu, Pb and Zn) pollution: Comparison of the metal levels in green-lipped mussel Perna viridis (Linnaeus) and in the sediment from a high activity site at Kg. Pasir Puteh and a relatively low activity site at Pasir Panjang. Pertanika J. Trop. Agric. Sci., 27: 73-78.

  259. Yap, C.K., A. Ismail, S.G. Tan and A.R. Ismail, 2006. Is gender a factor contributing to the natural variations in the accumulation of heavy metals (Cd Cu Pb and Zn) by the green lipped mussel Perna viridis Indian. J. Mar. Sci., 35: 29-35.

  260. Yap, C.K., A. Ismail, S.G. Tan and A.R. Ismail, 2006. Could the occurrence of shell deformities in the green-lipped mussel Perna viridis (Linnaeus), collected from the west coast of Peninsular Malaysia, be related to heavy metal contamination? Malaysian Applied Biol., 35: 67-70.
    Direct Link  |  

  261. Yap, C.K., A. Ismail, F.B. Edward, S.G. Tan and S.S. Siraj, 2006. Use of different soft tissues of Perna viridis as biomonitors of bioavailability and contamination by heavy metals (Cd Cu Fe, Pb, Ni and Zn) in a semi enclosed intertidal water the johore straits. Toxicol. Environ. Chem., 88: 683-695.
    CrossRef  |  Direct Link  |  

  262. Yap, C.K., A. Ismail, B.H. Pang, K.L. Yeow, S.G. Tan and S.S. Siraj, 2006. Elevated heavy metal concentrations in surface sediments collected from the drainages of the Sri Serdang Industrial Area, Malaysia. Malaysian Applied Biol., 35: 35-40.

  263. Yap, C.K., A. Ismail, A.R. Ismail and S.G. Tan, 2006. Biomonitoring of ambient concentrations of Cd, Cu, Pb and Zn in the coastal wetland water by using gills of the green-lipped mussel Perna viridis. Wetland Sci., 4: 247-252.

  264. Yap, C.K., A. Ismail and S.G. Tan, 2006. Distribution of cd cu pb and zn in different parts of byssus of the green lipped mussel Perna viridis (Linnaeus) collected from contaminated and uncontaminated coastal waters. Malaysian Applied Biol., 34: 7--13.

  265. Tan, S.G. and C.K. Yap, 2006. Biochemical and molecular indicators in aquatic ecosystems: Current status and further applications in Malaysia. Aquatic Ecosyst. Health Manage., 9: 227-236.

  266. Koyama, J., S. Imai, K. Fujii, S. Kawai, C.K. Yap and A. Ismail, 2006. Pollution by estrogens in river and estuarine waters around Kuala Lumpur, Malaysia, and their effects on the estuarine Java-medaka, Oryzias javanicus. Jpn. J. Environ. Toxicol., 9: 141-147.
    CrossRef  |  Direct Link  |  

  267. Choh, M.S., C.K. Yap, S.G. Tan and H.A. Jambari, 2006. Morphological and allozyme studies of small terrestrial snails (Opeas sp., Subulina sp. and Huttonella bicolor) collected from Peninsular Malaysia. Russian J. Genet., 42: 40-48.
    CrossRef  |  Direct Link  |  

  268. Choh, M.S., C.K. Yap, S.G. Tan and H.A. Jambari, 2006. Morphological and allozyme studies of small terrestrial snails (Opeas sp., Subulina sp. and Huttonella bicolor) collected from Peninsular Malaysia. Genetika, 42: 49-57.

  269. Azrina, M.Z., C.K. Yap, A.R. Ismail, A. Ismail and S.G. Tan, 2006. Anthropogenic impacts on the distribution and biodiversity of benthic macroinvertebrates and water quality of the Langat River, Peninsular Malaysia. Ecotoxicol. Environ. Saf., 64: 337-347.
    CrossRef  |  Direct Link  |  

  270. Amin, B., A. Ismail, A. Arshad, C.K. Yap and M.S. Kamarudin, 2006. A comparative study of heavy metal concentrations in Nerita lineata from the intertidal zone between Dumai Indonesia and Johor Malaysia. J. Coastal Dev., 10: 19-32.
    Direct Link  |  

  271. Yap, G.K., A. Ismail and S.G. Tan, 2005. Spatial variation of Zn geochemical fractions in the surface sediments of the straits of Malacca: Natural or anthropogenic? Wetland Sci., 3: 94-103.
    Direct Link  |  

  272. Yap, C.K., W.H. Cheng, A. Ismail and S.G. Tan, 2005. Tissue distribution of heavy metals (Cd, Cu, Pb and Zn) in the greenlipped mussel Perna viridis from Nenasi and Kuala Pontian, east coast of Peninsular Malaysia. Pertanika J. Trop. Agric. Sci., 28: 13-22.
    Direct Link  |  

  273. Yap, C.K., A. Rahim-Ismail, A. Ismail and S.G. Tan, 2005. Analysis of heavy metal concentration data (Cd, Cu, Pb and Zn) in different geochemical fractions of the surface sediments in the straits of Malacca by the use of correlation and multiple linear stepwise regression analyses. Malaysian Applied Biol., 34: 51-59.
    Direct Link  |  

  274. Yap, C.K., A. Ismail, M.D. Azuan, M.S. Al-Barwani, S.G. Tan and S.S. Siraj, 2005. Heavy metal (Cd, Cu, Pb and Zn) concentrations in the green-lipped mussel Perna viridis (L.) from artificial substrates at aquacultured farm of Sebatu. Malaysian Fisher. J., 4: 81-87.

  275. Yap, C.K., A. Ismail, K. Misri and S.G. Tan, 2005. Nitrate concentrations in the surface seawater of the Straits of Malacca. Asian J. Water Environ. Pollut., 2: 45-49.

  276. Yap, C.K., A. Ismail and S.G. Tan, 2005. [Byssus of the green-lipped mussel Perna viridis (Linnaeus) as a biomonitoring material for Zn]. Biologirya Morya (Vladivostok), 31: 117-122, (In Russian).

  277. Yap, C.K., A. Ismail and S.G. Tan, 2005. Cadmium, copper, lead and zinc levels in the green-lipped mussel Perna viridis (L.) from the west coast of Peninsular Malaysia: Safe as food? Pertanika J. Trop. Agric. Sci., 28: 41-47.
    Direct Link  |  

  278. Yap, C.K., A. Ismail and S.G. Tan, 2005. Byssus of the green-lipped mussel Perna viridis (Linnaeus) as a biomonitoring material for Zn. Russian J. Mar. Biol., 31: 102-108.
    CrossRef  |  Direct Link  |  

  279. Yap, C.K., A. Ismail and P.K. Chiu, 2005. Concentrations of Cd, Cu and Zn in the fish tilapia Oreochromis mossambicus caught from a Kelana Jaya Pond. Asian J. Water Environ. Pollut., 2: 65-70.
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  280. Ong, L.C.C., S.G. Tan, K. Yusoff and C.K. Yap, 2005. Isolation of DNA microsatellite markers in the green-lipped mussel, Perna viridis. Pertanika J. Trop. Agric. Sci., 28: 79-85.
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  281. Yap, C.K., V. Ismail and S.G. Tan, 2004. A comparison of heavy metal (Cd, Cu, Pb and Zn) concentrations in the mussels (Perna viridis and Perna canaliculus) bought from supermarkets with those of biological samples reported from Malaysia. Malaysian Applied Biol., 33: 99-102.

  282. Yap, C.K., S.G. Tan, A. Ismail and H. Omar, 2004. Allozyme polymorphisms and heavy metal levels in the green-lipped mussel Perna viridis (Linnaeus) collected from contaminated and uncontaminated sites in Malaysia. Environ. Int., 30: 39-46.
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  283. Yap, C.K., A. Ismail, S.G. Tan and A.R. Ismail, 2004. Assessment of different soft tissues of the green-lipped mussel Perna viridis (Linnaeus) as biomonitoring agents of Pb: Field and laboratory studies. Water Air Soil Pollut., 153: 253-268.
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  284. Yap, C.K., A. Ismail, H. Omar and S.G. Tan, 2004. Toxicities and tolerances of Cd, Cu, Pb and Zn in a primary producer (Isochrysis galbana) and in a primary consumer (Perna viridis). Environ. Int., 29: 1097-1104.
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  285. Yap, C.K., A. Ismail and S.G. Tan, 2004. Water content, shell thickness, conversion factor and condition index of the green-lipped mussel Perna viridis (Linnaeus) from Malaysian Coastal waters. Malayan Nat. J., 56: 387-396.

  286. Yap, C.K., A. Ismail and S.G. Tan, 2004. The shell of the green-lipped mussel Perna viridis as a biomonitoring material for Zn: Correlations of shells and geochemical fractions of surface sediments. Malaysian Applied Biol., 33: 79-88.

  287. Yap, C.K., A. Ismail and S.G. Tan, 2004. Laboratory studies on the tolerance and accumulation of cadmium, copper, lead and zinc by two different size groups of the green-lipped mussel Perna viridis (Linnaeus). Pertanika J. Sci. Technol., 12: 235-248.

  288. Yap, C.K., A. Ismail and S.G. Tan, 2004. Heavy metal (Cd Cu Pb and Zn) concentrations in the green-lipped mussel Perna viridis (Linnaeus) collected from some wild and aquacultural sites in the west coast of Peninsular Malaysia. Food Chem., 84: 569-575.
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  289. Yap, C.K., A. Ismail and S.G. Tan, 2004. Biomonitoring of heavy metals in the west coastal waters of Peninsular Malaysia using the green-lipped mussel Perna viridis: Present status and what next? Pertanika J. Trop. Agric. Sci., 27: 151-161.
    Direct Link  |  

  290. Ismail, A., C.K. Yap and F.F. Chan, 2004. Concentrations of Cd, Cu and Zn in sediments collected from urban lakes at Kelana Jaya, Peninsular Malaysia. Wetland Sci., 2: 248-258.
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  291. Yap, C.K., A.R. Ismail, A. Ismail and S.G. Tan, 2003. Studies on heavy metal accumulations in green-lipped mussel Perna viridis from Malaysia by using multiple linear stepwise regression analysis. Pertanika J. Sci. Technol., 11: 43-55.
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  292. Yap, C.K., A.R. Ismail, A. Ismail and S.G. Tan, 2003. Species diversity of macrobenthic invertebrates in the Semenyih River, Peninsular Malaysia. Pertanika J. Trop. Agric. Sci., 26: 139-146.

  293. Yap, C.K., A. Ismail, S.G. Tan and I.A. Rahim, 2003. Can the shell of the green-lipped mussel Perna viridis from the west coast of Peninsular Malaysia be a potential biomonitoring material for Cd, Pb and Zn? Estuarine Coastal Shelf Sci., 57: 623-630.
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  294. Yap, C.K., A. Ismail, S.G. Tan and H. Omar, 2003. Effects of heavy metals (Cd, Cu, Pb and Zn) on the filtration rate of the green-lipped mussel Perna viridis (Linnaeus). Malaysian Applied Biol., 32: 7-13.

  295. Yap, C.K., A. Ismail, H. Omar and S.G. Tan, 2003. Accumulation, depuration and distribution of cadmium and zinc in the green-lipped mussel Perna viridis (Linnaeus) under Laboratory conditions. Hydrobiologia, 498: 151-160.
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  296. Yap, C.K., A. Ismail and S.G. Tan, 2003. [Effects of body size (total soft tissue) and shell thickness on the accumulation of heavy metals (Cd, Cu, Pb and Zn) in the green-lipped mussel Perna viridis (Linnaeus)]. Biologirya Morya (Vladivostok), 29: 358-362, (In Russian).

  297. Yap, C.K., A. Ismail and S.G. Tan, 2003. Mercury levels in the green-lipped mussel Perna viridis (Linnaeus) from the west coast of Peninsular Malaysia. Bull. Environ. Contam. Toxicol., 71: 570-576.
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  298. Yap, C.K., A. Ismail and S.G. Tan, 2003. Mercury concentrations in the surface sediments of the intertidal area along the west coast of Peninsular Malaysia. Toxicol. Environ. Chem., 85: 13-21.
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  299. Yap, C.K., A. Ismail and S.G. Tan, 2003. Lead in surface sediments of the straits of Malacca. Indian J. Mar. Sci., 32: 323-328.
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  300. Yap, C.K., A. Ismail and S.G. Tan, 2003. Effects of body size (total soft tissue) and shell thickness on the accumulation of heavy metals (cd cu pb and zn) in the green lipped mussel Perna viridis (L.). Russian J. Mar. Biol., 29: 323-327.
    CrossRef  |  

  301. Yap, C.K., A. Ismail and S.G. Tan, 2003. Different soft tissues of the green-lipped mussel Perna viridis (Linnaeus) as biomonitoring agents of copper: Field and laboratory studies. Malaysian Applied Biol., 32: 9-18.

  302. Yap, C.K., A. Ismail and S.G. Tan, 2003. Concentrations of Cd, Cu, Pb and zn in different parts of the byssus of green-lipped mussel Perna viridis (linnaeus). Pak. J. Biol. Sci., 6: 789-792.
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  303. Yap, C.K., A. Ismail and S.G. Tan, 2003. Concentration, distribution and geochemical speciation of copper in surface sediments of the straits of Malacca. Pak. J. Biol. Sci., 6: 1021-1026.
    CrossRef  |  Direct Link  |  

  304. Yap, C.K., A. Ismail and S.G. Tan, 2003. Cd and Zn in the straits of Malacca and intertidal sediments of the west coast of Peninsular Malaysia. Marine Pollu. Bull., 46: 1348-1353.
    CrossRef  |  

  305. Yap, C.K., A. Ismail and S.G. Tan, 2003. Can the byssus of green-lipped mussel Perna veridis (Linnaeus) from the west coast of Peninsular Malaysia be a biomonitoring organ for Cd, Pb and Zn?Field and laboratory studies. Environ. Int., 29: 521-528.
    CrossRef  |  Direct Link  |  

  306. Yap, C.K., A. Ismail and S.G. Tan, 2003. Background concentrations of Cd, Cu, Pb and Zn in the green-lipped mussel Perna viridis (Linnaeus) from Peninsular Malaysia. Mar. Pollut. Bull., 46: 1044-1048.
    PubMed  |  Direct Link  |  

  307. Yap, C.K., A. Ismail and S.G. Tan, 2003. A comparison of heavy metal levels in the washed and unwashed byssal threads of the green lipped mussel Perna viridis (Linnaeus) research note. Malays. Applied Biol., 32: 73-75.

  308. Rezai, H., F.M. Yusoff and C.K. Yap, 2003. Mercury in zooplankton from the Malacca straits. Indian J. Mar. Sci., 32: 240-243.
    Direct Link  |  

  309. Yap, C.K., S.G. Tan, A. Ismail and H. Omar, 2002. Genetic variation of green-lipped mussel Perna viridis (Linnaeus) from the west coast of Peninsular Malaysia. Zool. Stud., 41: 376-387.

  310. Yap, C.K., A. Ismail, S.G. Tan and H. Omar, 2002. Correlations between speciation of Cd Cu Pb and Zn in sediment and their concentrations in total soft tissue of green lipped mussel Perna viridis from the west coast of peninsular malaysia. Environ. Int., 28: 117-126.
    PubMed  |  

  311. Yap, C.K., A. Ismail, S.G. Tan and H. Omar, 2002. Concentrations of Cu and Pb in the offshore and intertidal sediments of the West Coast of Peninsular Malaysia. Environ. Int., 28: 467-479.
    CrossRef  |  Direct Link  |  

  312. Yap, C.K., A. Ismail and S.G. Tan, 2002. Occurrence of shell deformities in green-lipped mussel Perna viridis (Linnaeus) collected from Malaysian coastal waters. Bull. Environ. Contam. Toxicol., 69: 877-884.
    CrossRef  |  Direct Link  |  

  313. Yap, C.K., A. Ismail and S.G. Tan, 2002. Condition index of the green-lipped mussel Perna viridis (Linnaeus) as a potential physiological indicator of ecotoxicological effects of heavy metals (Cd and Pb). Malaysian Applied Biol., 31: 37-45.
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