Dr. Mohammad  Mahmoud Nabih Authman Mohammad
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Dr. Mohammad Mahmoud Nabih Authman Mohammad

Department Hydrobiology, Veterinary Research Division, National Research Centre, Egypt

Highest Degree
Ph.D. in Science from Al- Minufiya University, Egypt

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Dr. Mohammad Mahmoud Nabih Authman Mohammad is currently working as Professor at National Research Center. He obtained his PhD degree in Zoology from Al-Menufiya University, Shebeen Alkoom, Egypt. His area of interest related to Fish Ecology, Freshwater Ecology, Environmental Sciences, Environmental Pollution, Toxicology, Fish Biology, Fishery Science, Fish Population Dynamics and Stock Assessment, Aquaculture, and Zooplankton Ecology and Distribution. He is member of different societies such as The Egyptian Society for the development of Fisheries Resources and Human Health, The Egyptian Society of Aquaculture, The Zoological Society A.R. Egypt, The Egyptian German Society of Zoology, The Union of Arab Biologists Society, Egyptian Veterinary Medical Association, and Syndicate of Scientific professions. He also contributed in more than 28 national and international conferences, workshops and symposia. He also obtained Award for the best research paper, Candidate for acquisition of the National Research Centre Award for Scientific encouragement, and Award of Pioneers in 2012 from the National Research Centre. He has Published 55 scientific papers (30 international and 25 national) contributed as author/co-author. He also contributed in composing a book entitled Aquatic Ecology and Biotechnology II.

Area of Interest:

Animal and Veterinary Sciences
Environmental Biology

Research Publications in Numbers


Selected Publications

  1. Zaki, M.S., M.M.N. Authman, M.F. Abdel Zaher and O.M. Fawzi, 2018. Effects of oil pollution on aquatic organism (Review article). Researcher, 10: 57-60.
  2. Zaki, M.S., M.M.N. Authman, A.M. Hammam, S.I. Shalaby and N.S. Rabie, 2018. Impact of aflatoxicosis on fish aquaculture and poultry. Stem Cell, 9: 54-57.
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  3. Sayed, A.E.D.H. and M.M. Authman, 2018. The protective role of Spirulina platensis to alleviate the Sodium dodecyl sulfate toxic effects in the catfish Clarias gariepinus (Burchell, 1822). Ecotoxicol. Environ. Safety, 163: 136-144.
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  4. Khallaf, E.A., M.M.N. Authman, M. Galal and R.A. Zaid, 2018. A comparative biological study on Oreochromis niloticus from two Nilotic canals in the delta of Egypt. Egypt. J. Aqua. Biol. Fish., 22: 39-63.
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  5. Khallaf, E.A., M.M. Authman and A.A. Alne-na-ei, 2018. Evaluation of organochlorine and organophosphorus pesticides residues in the sediment and muscles of Nile tilapia Oreochromis niloticus (Linnaeus, 1758) fish from a River Nile Canal, Egypt. Int. J. Environ. Stud., 75: 443-465.
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  6. Khallaf, E.A. and M.M. Authman, 2018. Contamination and ecological hazard assessment of heavy metals in freshwater sediments and Oreochromis niloticus (Linnaeus, 1758) fish muscles in a Nile River Canal in Egypt. Environ. Sci. Pollut. Res., 25: 13796-13812.
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  7. Hammam, A.M.M., M.S. Zaki, M.M.N. Authman and Z.M.S.A. Girh, 2018. Antibiotic residues in farm animal and a food of animal origin with emphasis on bacterial resistance (Review). Rep. Opin., 10: 1-8.
  8. Authman, M.M.N. and M.S. Zaki, 2018. Effects of industrial pollutants on physicochemical characteristics of the River Nile water and fish productivity. Stem Cell, 9: 32-36.
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  9. Authman, M.M.N. and M.S. Zaki, 2018. Effect of industrial pollution on fish in river Nile. Researcher, 10: 65-68.
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  10. Azab, A.M., W.M. Shaban, M.S. Zaki, M.M.N. Authman and M.F. Abdel Zaher, 2016. Monitoring of petroleum hydrocarbons in sediment and gastropods from Suez Gulf, Red Sea. Life Sci. J., 13: 46-59.
  11. Zaki, M.S., M.M.N. Authman and H.H.H. Abbas, 2015. Bioremediation of petroleum contaminants in aquatic environments (review article). Life Sci. J., 12: 109-121.
  12. El-Kasheif, M.A., M.M.N. Authman, F.A. Al-Ghamdi, S.A. Ibrahim and A.M. El-Far, 2015. Biological aspects and fisheries management of tilapia fish Oreochromis niloticus (Linnaeus, 1758) in El-Bahr El-Faraouny Canal, Al-Minufiya Province, Egypt. J. Fish. Aquatic Sci., 10: 405-444.
  13. El-Badawi, A.A., A.Y. Gaafar, H.H. Abbas and M.M.N. Authman, 2015. Toxic effects of neem seeds oil on Nile Tilapia (Oreochromis niloticus) and application of different trials of control. J. Pharmaceut. Biol. Chem. Sci., 6: 645-658.
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  14. Authman, M.M., M.S. Zaki, E.A. Khallaf and H.H. Abbas, 2015. Use of fish as bio-indicator of the effects of heavy metals pollution. J. Aquacult. Res. Dev., Vol. 6. 10.4172/2155-9546.1000328.
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  15. Zaki, M.S., M.M.N. Authman, N.S. Ata, M.F. Abdelzaher and A.M.M. Hammam, 2014. Effects of environmental oil spills on commercial fish and shellfish in Suez Canal and Suez Gulf regions. Life Sci. J., 11: 269-274.
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  16. Zaki, M.S., M.M.N. Authman, A.M.M. Hammam and S.I. Shalaby, 2014. Aquatic environmental pollution in the Egyptian countryside and its effect on fish production. Life Sci. J., 11: 1024-1029.
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  17. Gaber, H.S., W.T. Abbas, M.M.N. Authman and S.A. Gaber, 2014. Histological and biochemical studies on some organs of two fish species in Bardawil Lagoon, North Sinai, Egypt. Global Veterinaria, 12: 1-11.
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  18. El-Badawi, A.A., A.Y. Gaafar, H.H. Abbas and M.M.N. Authman, 2014. The protective role of copper nicotinate and vitamin E against neem seed oil induced oxidative stress and histopathological changes in Nile Tilapia (Oreochromis niloticus, Linnaeus, 1758). Egyptian J. Aquatic Biol. Fish., 18: 1-19.
  19. Abumourad, I.M.K., W.T. Abbas, M.M.N. Authman and S.M. Girgis, 2014. Environmental impact of heavy metal pollution on metallothionein expression in Nile Tilapia. Res. J. Pharmaceut. Biol. Chem. Sci., 5: 998-1005.
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  20. Ibrahim, S.A., M.M.N. Authman, H.S. Gaber and M.A. El-Kasheif, 2013. Bioaccumulation of heavy metals and their histopathological impact on muscles of Clarias gariepinus from El-Rahawy drain, Egypt. Int. J. Environ. Sci. Eng., 4: 57-73.
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  21. Gaber, H.S., M.A. El-Kasheif, S.A. Ibrahim and M.M.N. Authman, 2013. Effect of water pollution in El-Rahawy Drainage Canal on hematology and organs of freshwater fish Clarias gariepinus. World Applied Sci. J., 21: 329-341.
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  22. El-Kasheif, M.A., K.A.S. Shalloof and M.M.N. Authman, 2013. Studies on some reproductive characters of Tilapia species in Damietta branch of the River Nile, Egypt. J. Fish. Aquat. Sci., 8: 323-339.
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  23. El-Kasheif, M.A., H.S. Gaber, M.M.N. Authman and S.A. Ibrahim, 2013. Histopathological and physiological observations of the kidney and spleen of the Nile catfish Clarias gariepinus inhabiting El-Rahawy drain, Egypt. J. Applied Sci. Res., 9: 872-884.
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  24. Authman, M.M.N., W.T. Abbas, I.M.K. Abomourad and A.M. Kenawy, 2013. Effects of illegal cyanide fishing on vitellogenin in the freshwater African catfish, Clarias gariepinus (Burchell, 1822). Ecotoxicol. Environ. Saf., 91: 61-70.
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  25. Authman, M.M.N., S.A. Ibrahim, M.A. El-Kasheif and H.S. Gaber, 2013. Heavy metals pollution and their effects on gills and liver of the Nile Catfish Clarias gariepinus inhabiting El-Rahawy Drain, Egypt. Global Veterinaria, 10: 103-115.
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  26. Authman, M.M.N., H.H. Abbas and W.T. Abbas, 2013. Assessment of metal status in drainage canal water and their bioaccumulation in Oreochromis niloticus fish in relation to human health. Environ. Monit. Assess., 185: 891-907.
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  27. Abomourad, I.M.K., W.T. Abbas, E.S. Awaad, M.M.N. Authman and K. El-Shafei et al., 2013. Evaluation of Lactobacillus plantarum as a probiotic in aquaculture: Emphasis on growth performance and innate immunity. J. Applied Sci. Res., 9: 572-582.
  28. Abomourad, I.M.K., M.M.N. Authman and W.T. Abbas, 2013. Heavy metal pollution and metallothionein expression: A survey on Egyptian tilapia farms. J. Applied Sci. Res., 9: 612-619.
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  29. Khallaf, E.A. and M.M.N. Authman, 2012. Interaction of the mormyrid fish Mormyrus kannume (Forsskal, 1775) reproduction and feeding intensity with the environment in a Nile Delta Canal, Egypt. Egypt. J. Aquat. Biol. Fish., 16: 73-94.
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  30. El-Kasheif, M.A., M.M.N. Authman and S.A. Ibrahim, 2012. Environmental studies on Synodontis schall (Bloch and Schneider, 1801) (Pisces: Siluriformes: Mochokidae) in the River Nile at Gizza Sector, Egypt: Biological aspects and population dynamics. J. Fish. Aquat. Sci., 7: 104-133.
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  31. Authman, M.M.N., W.T. Abbas and A.Y. Gaafar, 2012. Metals concentrations in Nile tilapia Oreochromis niloticus (Linnaeus, 1758) from illegal fish farm in Al-Minufiya province, Egypt and their effects on some tissues structures. Ecotoxicol. Environ. Saf., 84: 163-172.
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  32. Authman, M.M.N. and A.M. Kenawy, 2012. Histopathological studies on aluminium intoxication in Nile Tilapia fish (Oreochromis niloticus). Bull. NRC Egypt, 37: 27-40.
  33. Abbas, H.H., M.M. Authman, M.S. Zaki and G.F. Mohamed, 2012. Effect of seasonal temperature changes on thyroid structure and hormones secretion of White Grouper (Epinephelus aeneus) in Suez Gulf, Egypt. Life Sci. J., 9: 700-705.
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  34. Galal, M., M. Authman and N. Gaber, 2011. Ciliated protozoan diversity at El-Hammra hypersaline lake, Wadi Al-Natrun, Egypt. Afr. J. Biol. Sci., 7: 1-12.
  35. Authman, M.M.N., 2011. Environmental and experimental studies of aluminium toxicity on the liver of Oreochromis niloticus (Linnaeus, 1758) fish. Life Sci. J., 8: 764-776.
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  36. Khallaf, E.A. and M.N. Authman, 2010. Some biological aspects of the Nile mormyrid fish, (Mormyrus kannume, Forsskal, 1775), from Bahr Shebeen Nilotic Canal, Egypt. World J. Fish Mar. Sci., 2: 357-375.
  37. Alnenaei, A.E. and M. Authman, 2010. Impact of human activities on aluminum contamination in the drainage canals in the Nile Delta, Egypt. Toxicol. Lett., 196: S114-S114.
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  38. Abomourad, I.M.K., H.H. Abbas, A.A. El-Badawi and M.M.N. Authman, 2010. Toxicological assessment of thiobencarb and dithiopyr on Nile tilapia. Online J. Vet. Res., 14: 233-245.
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  39. Shalloof, K.S., M.N. Authman and M.A. El-Kasheif, 2009. Food and feeding habits of three cichlid species inhabiting Damietta branch of the River Nile, Egypt. Egypt. J. Aquat. Biol. Fish., 13: 49-66.
  40. Khallaf, E.A. and M.N. Authman, 2009. Oogenesis of females of the Nile mormyrid fish, Mormyrus kannume (Forskal, 1775) from Bahr Shebeen Canal, Egypt. Egypt. J. Aquat. Biol. Fish., 13: 333-359.
  41. Authman, M.N. and E.A. Khallaf, 2009. Spermatogenesis of male Mormyrus kannume (Forskal,1775) (Teleostei, Mormyridae) from Bahr Shebeen Nilotic Canal, delta, Egypt. Egypt. J. Aquat. Biol. Fish., 13: 361-384.
  42. Authman, M.M.N., M.A. El-Kasheif and K.A.S. Shalloof, 2009. Evaluation and management of the fisheries of Tilapia species in Damietta Branch of the River Nile, Egypt. World J. Fish Mar. Sci., 1: 167-184.
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  43. Amany, M.K., M.E.G. Hala, M.N.A. Mohammad and M.A. Abdel-Wahab, 2009. Pathological studies on effects of aflatoxin on Oreochromis niloticus with application of different trials of control. Egypt. J. Comp. Pathol. Clin. Pathol., 22: 175-193.
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  44. Abbas, H.H. and M.M.N. Authman, 2009. Effects of accumulated selenium on some physiological parameters and oxidative stress indicators in tilapia fish (Oreochromis spp.). Am.-Eurasian J. Agric. Environ. Sci., 5: 219-225.
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  45. Galal, M., M.M.N. Authman and N. Gaber, 2008. Ciliated protozoan diversity in Rosetta branch in El-Menofeyia province. Afr. J. Biol. Sci., 4: 35-45.
  46. El-Badawi, A.A., M.M. Authman, H.H. Abbas and O.A. Radwan, 2008. Toxicity of Dithiopyr herbicide to Nile tilapia (Oreochromis niloticus): Singly and in combination with Thiobencarb. J. Egypt. Vet. Med. Assoc., 68: 33-58.
  47. Authman, M.M.N., E.M. Bayoumy and A.M. Kenawy, 2008. Heavy metal concentrations and liver histopathology of Oreochromis niloticus in relation to aquatic pollution. Global Veterinaria, 2: 110-116.
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  48. Authman, M.M.N., 2008. Oreochromis niloticus as a biomonitor of heavy metal pollution with emphasis on potential risk and relation to some biological aspects. Global Vet., 2: 104-109.
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  49. Tayel, S.I., S.A. Ibrahim, M.M.N. Authman and M.A. El-Kashef, 2007. Assessment of sabal drainage canal water quality and its effect on blood and spleen histology of Oreochromis niloticus. Afr. J. Biol. Sci., 3: 97-107.
  50. El-Kasheif, M.A., M.M.N. Authman and S.A. Ibrahim, 2007. Study of age, growth and some population dynamics aspects of the Nile Cyprinidae fish, Labeo niloticus, from the River Nile at El-Kanater El-Khyria, Egypt. CATRINA, 2: 7-21.
  51. Authman, M.M.N. and M.I.I. El-Sehamy, 2007. Pesticides residues in water and fish collected from Kafr Al-Zayat pesticide factory zone and their impact on human health. Egypt. J. Zool., 48: 257-282.
  52. Authman, M.M.N. and H.H.H. Abbas, 2007. Accumulation and distribution of copper and zinc in both water and some vital tissues of two fish species (Tilapia zillii and Mugil cephalus) of Lake Qarun, Fayoum Province, Egypt. Pak. J. Biol. Sci., 10: 2106-2122.
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  53. Abomourad, I.M.K., H.H. Abbas, A.A. El-Badawi and M.M. Authman, 2007. Assessment of the adverse effects of thiobencarb and dithiopyr herbicides on the Nile tilapia, Oreochromis niloticus. Egypt. J. Aquat. Biol. Fish., 11: 101-121.
  54. Abbas, H.H., M.M. Authman, I.M.K. Abomourad and A.A. El-Badawi, 2007. Studies on the effect of thiobencarb herbicide on some biological, physiological, biochemical, histological and genetic aspects of Nile tilapia, Oreochromis niloticus. Egypt. J. Aquat. Biol. Fish., 11: 123-150.
  55. Abomourad, I.M., S.F. Elabd and M.M.N. Authman, 2005. The use of single cell gel electrophoresis (Comet) assay to detect genetic damage in Clarias gariepinus erythrocytes treated with Malathion. J. Egyptian Soc. Toxicol., 33: 103-109.
  56. Khallaf, E.A., M. Galal and M. Authman, 2003. The biology of Oreochromis niloticus in a polluted canal. Ecotoxicology, 12: 405-416.
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  57. Khallaf, E.A., M. Galal and M. Authman, 1998. Assessment of heavy metals pollution and their effects on Oreochromis niloticus in aquatic drainage canals. J. Egyptian German Soc. Zool., 26: 39-74.
  58. Galal, M., E. Khallaf and M. Authman, 1997. Population densities of some freshwater types of zooplankton and their response to various ecological factors in two drainage canals in EL-Menofeyia Province, Egypt. J. Union Arab Biol. Cairo, 8: 253-277.
  59. Khallaf, E.A., M. Galal and M. Authman, 1994. A study of pesticides residues in Oreochromis niloticus (L.) muscles from a Nile drainage canal. J. Egyptian German Soc. Zool., 15: 491-508.
  60. Galal, M. and M.N. Authman, 1994. The population densities and the growth rates of the most common Holotrichs and Spirotrichs in the River Nile at Benha, Kalubeyia, Egypt. J. Egyptian German Soc. Zool., 13: 207-218.
  61. Khallaf, E.A. and M.N. Authman, 1992. Changes in diet, prey size and feeding habit in Bagrus bayad and possible interactions with B. docmac in a Nile canal. Environ. Biol. Fish., 34: 425-431.
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  62. Khallaf, E.A., M.M. Elsaadany and M.N. Authman, 1991. Oogenesis of Bagrus bayad forsk. (Bagridae, Teleostei). J. Egyptian German Soc. Zool., 3: 1-14.
  63. Khallaf, E.A. and M. Authman, 1991. Growth and mortality of Bagrus bayad (Forskal) in Bahr shebeen nilotic canal. J. Egyptian German Soc. Zool., 4: 87-109.
  64. Khallaf, E.A. and M. Authman, 1991. A study of some reproduction characters of Bagrus bayad Forskal, in Bahr Shebeen Nilotic canal. J. Egyptian German Soc. Zool., 4: 123-138.
  65. Elsaadany, M.M., E.A. Khallaf and M.N. Authman, 1991. Spermatogenesis of Bagrus bayad, Forskal (Bagridae, Teleostei). J. Egyptian German Soc. Zool., 3: 15-24.
  66. Elewa, A.A. and M. Authman, 1991. Limnological studies on Bahr Shebeen Canal, El-Menoufia Governorate, Egypt. Bull. Faculty Sci. Zagazig Univ. Zagazig Egypt, 13: 470-480.