Dr. Chee  Kong Yap

Dr. Chee Kong Yap

Associate Professor
Universiti Putra Malaysia, Malaysia


Highest Degree
Ph.D. in Ecotoxicology from Universiti Putra Malaysia, Malaysia

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Biography

Dr. Chee Kong YAP is a Malaysian and is currently an Associate Professor at the Department of Biology, Faculty of Science, Universiti Putra Malaysia (UPM). He obtained his Ph.D. degree in Ecotoxicology from Universiti Putra Malaysia. As an academician for more than 12 years in UPM and 17 years as a researcher, he has been active in teaching and doing research since his first degree. Under his chairmanship, one PhD and six MS students have successfully graduated so far in UPM. In recognition of his expertise and research capabilities, he was awarded research grants as Principal Investigator and Researcher including from Ministry of Science, Technology and Innovation (MOSTI, Malaysia), Ministry of Higher Education (MOHE, Malaysia) and Universiti Putra Malaysia. He has been invited as a reviewer in various prominent Impact Factor Journals besides some non-cited journals. Until February 2015, he has reviewed [voluntarily] 190 citation-indexed and 63 non-citation –indexed journal articles, by invitation on ad hoc basis, which are submitted for consideration for publication in international journals worldwide. Dr. Yap has been active in publications as evidenced with his research outputs with more than 236 published in refereed academic journals, 2 books, 4 book chapters, 18 international conferences/ proceedings, 45 national conferences/ proceedings, 4 invited papers and 32 poster presentations. In addition, he has published 21 papers (8.60%) as single author of the paper. Until February 2015, 163 of them have now been indexed in Elsevier’s Scopus with an H-index of 18 (1185 citations) and 20 (1758 citations) based on Google Scholar. His single-authored book entitled ‘Mussel Watch in Malaysia: Past, Present and Future’ (UPM Press, 2012) is his significant output of his 17-year research endeavor. Most recently, Dr. Yap has won an international award for ‘Award for Excellence in Research 2014 (EET CRS)’, on 21 July 2014 from Bangalore, India. He has been officially invited as Associate Editor of MABJ and an Editorial Board Member of PJTAS. Internationally, he has also been invited in honorary as Editorial Board members for four international journals. In addition, he has also been invited and currently serving as one of the editorial board members for another 16 international academic journals (Scopus) since 2010.

Area of Interest:

Plant and Soil Sciences
100%
Heavy Metal
62%
Biomonitoring
90%
Molluscs
75%
Ecotoxicology
55%

Education

2006

Ph.D.

Universiti Putra Malaysia, Malaysia

Ecotoxicology

Selected Publications

  1. 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.

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

  3. 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.
    CrossRef  |  Direct Link  |  

  4. 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.

  5. 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.
    CrossRef  |  Direct Link  |  

  6. 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.

  7. 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.
    CrossRef  |  Direct Link  |  

  8. 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.
    CrossRef  |  Direct Link  |  

  9. 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.
    CrossRef  |  

  10. 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.
    CrossRef  |  Direct Link  |  

  11. 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.
    CrossRef  |  Direct Link  |  

  12. 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.
    CrossRef  |  Direct Link  |  

  13. 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.
    CrossRef  |  Direct Link  |  

  14. 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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  15. 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.
    CrossRef  |  Direct Link  |  

  16. 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.
    Direct Link  |  

  17. 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.
    CrossRef  |  Direct Link  |  

  18. 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.
    Direct Link  |  

  19. 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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  20. 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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  21. 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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  22. 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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  23. 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.

  24. 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.
    CrossRef  |  

  25. 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.

  26. 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.
    Direct Link  |  

  27. 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  |  

  28. 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  |  

  29. 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  |  

  30. 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  |  

  31. 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  |  

  32. 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.

  33. 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.

  34. 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  |  

  35. 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.

  36. 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  |  

  37. 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  |  

  38. 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.

  39. 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  |  

  40. 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  |  

  41. 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.

  42. 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  |  

  43. 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.

  44. 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.

  45. 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.

  46. 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  |  

  47. 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.
    Direct Link  |  

  48. 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  |  

  49. 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.

  50. 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.

  51. 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.
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  52. 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  |  

  53. 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  |  

  54. 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.

  55. 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.

  56. 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.

  57. 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.

  58. 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  |  

  59. 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  |  

  60. 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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  61. 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.
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  62. 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  |  

  63. 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.
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  64. 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  |  

  65. 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.
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  66. 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.

  67. 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.
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  68. 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  |  

  69. 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.
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  70. 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.
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  71. 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.
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  72. 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.
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  73. 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.
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  74. 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.

  75. 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  |  

  76. 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.

  77. 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  |  

  78. 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.

  79. 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.

  80. 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.
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  81. 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.
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  82. 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.
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  83. 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.
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  84. 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.

  85. 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.

  86. 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.
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  87. 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.

  88. 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  |  

  89. 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  |  

  90. 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  |  

  91. 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.

  92. 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  |  

  93. 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.

  94. 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  |  

  95. 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.

  96. 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  |  

  97. 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  |  

  98. 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  |  

  99. 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.

  100. 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  |  

  101. 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  |  

  102. 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.

  103. 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.

  104. 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.

  105. 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.

  106. 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  |  

  107. 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  |  

  108. 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  |  

  109. 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  |  

  110. 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  |  

  111. 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.

  112. 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.

  113. 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.

  114. 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  |  

  115. 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  |  

  116. 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  |  

  117. 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.

  118. 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  |  

  119. 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  |  

  120. 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  |  

  121. 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  |  

  122. 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.

  123. 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  |  

  124. 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  |  

  125. 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.

  126. 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  |  

  127. 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.

  128. 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  |  

  129. 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  |  

  130. 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.

  131. 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  |  

  132. 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  |  

  133. 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.

  134. 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  |  

  135. 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  |  

  136. 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.

  137. 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.

  138. 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.

  139. 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.

  140. 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  |  

  141. 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  |  

  142. 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.

  143. 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  |  

  144. 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  |  

  145. 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  |  

  146. 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.

  147. 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.
    Direct Link  |  

  148. 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.

  149. 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  |  

  150. 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  |  

  151. 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  |  

  152. 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.

  153. 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.

  154. 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  |  

  155. 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.

  156. 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  |  

  157. 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  |  

  158. 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.

  159. 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.

  160. 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  |  

  161. 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.

  162. 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  |  

  163. 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  |  

  164. 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  |  

  165. 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  |  

  166. 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  |  

  167. 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.

  168. 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  |  

  169. 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.

  170. 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.

  171. 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.

  172. 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  |  

  173. 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.

  174. 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  |  

  175. 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  |  

  176. 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.

  177. 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  |  

  178. 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  |  

  179. 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  |  

  180. 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.

  181. 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  |  

  182. 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  |  

  183. 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.

  184. 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  |  

  185. 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.

  186. 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.

  187. 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  |  

  188. 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  |  

  189. 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.

  190. 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.

  191. 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.

  192. 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.

  193. 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.
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  194. 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  |  

  195. 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.

  196. 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.
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  197. 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.

  198. 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  |  

  199. 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.

  200. 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.

  201. 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.
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  202. 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  |  

  203. 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.

  204. 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.

  205. 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.

  206. 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.

  207. 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  |  

  208. 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.
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  209. 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.

  210. 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  |  

  211. 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.
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  212. 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  |  

  213. 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  |  

  214. 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  |  

  215. 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.

  216. 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.

  217. 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).

  218. 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  |  

  219. 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  |  

  220. 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.
    Direct Link  |  

  221. 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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  222. 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.

  223. 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.
    CrossRef  |  Direct Link  |  

  224. 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.
    CrossRef  |  Direct Link  |  

  225. 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.
    CrossRef  |  Direct Link  |  

  226. 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.

  227. 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.

  228. 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.

  229. 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 (L.) collected from some wild and aquacultural sites in the west coast of peninsular malaysia. Food Chem., 84: 569-575.
    CrossRef  |  

  230. 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  |  

  231. 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.
    Direct Link  |  

  232. 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.
    Direct Link  |  

  233. 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.

  234. 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.
    CrossRef  |  Direct Link  |  

  235. 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.

  236. 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.
    Direct Link  |  

  237. 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).

  238. 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.
    CrossRef  |  Direct Link  |  

  239. 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.
    CrossRef  |  Direct Link  |  

  240. 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.
    Direct Link  |  

  241. 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  |  

  242. 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.

  243. 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.
    CrossRef  |  Direct Link  |  

  244. 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  |  

  245. 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  |  

  246. 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  |  

  247. 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  |  

  248. 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.

  249. 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  |  

  250. 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.

  251. 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  |  

  252. 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  |  

  253. 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  |  

  254. 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.