Dr Malachy N.O. Ajima

Dr Ajima

Malachy N.O. Ajima, PhD.

Lecturer II

E-mail: malajimo@gmail.com, malachy.ajima@futo.edu.ng



  • B.Sc. (Zoology), M.Sc. (Hydrobiology and Fisheries) -University of Jos,
  • PhD (Aquatic Environment Management) – CIFE, Mumbai

Primary Teaching Area

Limnology, Oceanography,  Water Quality Management and Pollution Control

Research Interests

Fisheries and Aquatic Ecotoxicology, Molecular Biology and Fisheries, Fish Physiology and Biochemistry, Comet assay and Micronucleus test, Conservation and Environmental Impact Assessment, Bioremediation


  • Ajima, M. N.O., Pandey, P. K., Kumar, K. and Poojary, N. (2018). Alteration in DNA structure, molecular responses and Na -K-ATPase activities in the gill of Nile tilapia, Oreochromis niloticus (Linnaeus, 1758) in response to sub-lethal verapamil Ecotoxicology and Environmental Safety 147: 809–816.
  • Ajima, M. N.O., Pandey, P. K., Kumar, K. and Poojary, N. (2017). Neurotoxic effects, molecular responses and oxidative stress biomarkers in Nile tilapia, Oreochromis niloticus (Linnaeus, 1758) exposed to verapamil. Comparative Biochemistry and Physiology Part C: Toxicology and Pharmacology. 196:44-52.
  • Pandey, P. K., Ajima, M. N. O., Kumar, K., Poojary, N. and Kumar, S. (2017). Evaluation of DNA damage and physiological responses in Nile tilapia, Oreochromis niloticus (Linnaeus, 1758) exposed to sub-lethal diclofenac (DCF).Aquatic Toxicology. 186: 205-214.
  • Sukhdhane, S., Pandey, P. K., Ajima, M. N.O., Jayakumar, T., Vennila, A. and Raut, S.M. (2017). Isolation and characterization of phenanthrene-degrading bacteria from PAHs contaminated mangrove sediment of Thane Creek in Mumbai, India, Polycyclic Aromatic Compounds, DOI: 10.1080/10406638.2016.126191.
  • Ajima, N.O., Audu, B. S., Mane, A. M., Okeke L. and Varghese, T. (2017). Alteration in activities of some selected metabolic enzymes and haematological profile of African catfish, Clarias gariepinus chronically treated with urea fertilizer. Research in Environment and Life Sciences. 10(2): 129-134
  • Ajima, N.O., Pandey, P.K., Kumar, K. and Poojary, N. (2017). Assessment of mutagenic, haematological and oxidative stress biomarkers in the liver of Nile tilapia, Oreochromis niloticus (Linnaeus, 1758) in response to sub-lethal verapamil exposure. Drug and Chemical Toxicology, 40(3): 286–294.
  • Ezike, C.O., Echor, F.O., Ajima, M.N.O. and Maria, V. L. (2017). Butrylacetycholinesterase activity in liver and plasma, liver glycogen and plasma glucose content, haematology and behaviour of Clariid Catfish Clarias gariepinus to dichlorvos. International Journal of Advanced Fisheries and Aquatic Science 3 (1): 90-105.
  • Adaka, G.S.  Ajima, M. N. O.  Ezeafulukwe, C. F.  Osuigwe, D.1. and Nlewadim, A. (2017). Assessment of heavy metals in fish tissues of some fish species in Oguta Lake, South-Eastern Nigeria. Futo Journal Series 3 (1):249 – 257.
  • Ajima, N.O., Pandey, P.K., Kumar, K., Poojary, N. and Mane, A. M. (2016). Lipid peroxidation and activities of antioxidant enzymes biomarkers in Oreochromis niloticus (Linnaeus, 1758) chronically treated with diclofenac (DCF). Journal of Experimental Zoology, India, 19 (2): 671-676.
  • Sharma, N., Rather, M.A., Ajima, N.O., Gireesh-Babu, P., Kumar, K. and Sharma, R. (2016). Assessment of DNA damage and molecular responses in Labeo rohita (Hamilton, 1822) following short-term exposure to silver nanoparticles. Food and Chemical Toxicology, 96:122-132.
  • Bharti, , Pandey, P. K., Vennila, A., Rajkumar M. and Ajima M.N.O. (2016). Water quality, survival and growth performance of Cirrhinus mrigala (Hamilton 1822) in Substrate-based tanks. Asian Fisheries Science 29:137-150.
  • Ajima, N.O., Nnodi, P.C., Ogo, O.A., Adaka, G.S., Osuigwe, D.I. and Njoku, D. C. (2015). Bioaccumulation of heavy metals in Mbaa River and the impact on an aquatic ecosystem. Environmental Monitoring and Assessment 187: 768.
  • Sukhdhane, K.S., Pandey, P. K., Vennila, A., Purushothaman, C. S. and Ajima, N.O. (2015). Sources, distribution and risk assessment of polycyclic aromatic hydrocarbons in the mangrove sediments of Thane Creek, Maharashtra, India. Environmental Monitoring and Assessment 187:274.
  • Ajima, N.O., Ogo, O.A., Akpa, L.E. and Ajaero, I. (2015). Biochemical and haematological responses in African catfish Clarias gariepinus following chronic exposure to NPK (15:15:15) fertilizer. African Journal of Aquatic Science, 40(1): 73–79.
  • Audu, B. S., Ajima, M.N.O and Ofojekwu, P. C. (2015). Enzymatic and biochemical changes in common carp, Cyprinus carpio (L.) fingerlings exposed to crude leaf extract of Cannabis sativa (L.). Asian Pacific Journal of Tropical Disease 5(2):930-938.
  • Ajima, N.O., Ogo, O.A., Audu, B. S. and Ugwoegbu, K.C. (2015). Chronic Diclofenac (DCF) exposure alters both the enzymatic and haematological profile of African catfish, Clarias gariepinus. Drug and Chemical Toxicology, 38(4):383-390.
  • Nwani, D., Nnaji, M. C., Oluah, S. N., Echi, P. C., Nwamba, H. O., Ikwuagwu, O. E., Ajima, M.N.O. (2014): Mutagenic and physiological responses in the juveniles of African catfish, Clarias gariepinus (Burchell 1822) following short-term exposure to praziquantel. Tissue and Cell 46: 264-273.
  • Audu, B.S., Ofojekwu, P.C., Ujah, A., Ajima, M.N.O. (2014). Phytochemical, proximate            composition, amino acid profile and characterization of Marijuana (Cannabis sativa ) The Journal of Phytopharmacology 3(1): 35-437
  • Okwor, C.O., Ofojekwu, P.C. and Ajima, M.N.O. (2013). Comparative Studies of organic fertilizers to the Cichlid, Oreochromis niloticus Journal of Applied Agricultural Research 5(1): 195-200
  • Nwamba, H. O. and Ajima, N.O. (2011). Haematological and Biochemical changes of freshwater fish, Heterobranchus bidorsalis exposed to endosulfan. Biochemical Cellular Archives 2(2):439-441.
  • Akpa, L.E., Ajima, N.O., Audu B.S. and Labte S.M. (2010). Effects of Fish Bean (Tephrosia vogelli) leaf extract exposed to freshwater fish Tilapia zilli. Animal Research          International, 7(3): 1236-1241.
  • Ajima, N.O., Omoregie, E., Akpa, L.E., Audu, B.S. and Ogo, O.A. (2010). Growth and feed utilization of Nile tilapia, Oreochromis niloticus exposed to sublethal concentrations of single superphosphate fertilizer. African Journal of Environmental Pollution and Health, 8(1): 83-88.
  • Absalom, K.V., Ajima, N.O., Nwani, C. D. and Ayodele, B. J. (2009). Acute toxicity of water-soluble fractions (WSF) of kerosene on Nile tilapia, Oreochromis niloticus fingerlings under laboratory conditions. Journal of Experimental Zoology India, 12(2):297-300.
  • Omoregie, E., Ajima, N.O., Keke R. I. and Wieski K. (2009). Effect of single superphosphate fertilizer on the survival and respiratory dynamics of Nile tilapia, Oreochromis niloticus. Acta Ichthyologica et Piscatoria, 39(2):103-110.
  • Akpa, L. E., Ajima, N.O., Nwani, C. D. and Onu, C. A. (2009). Toxic effect of Euphorbia tirucalli (Pencil tree) sap on Tilapia zilli fingerlings. Biochemical Cellular Archive, 9(2):247- 251.
  • Akpa, L. E., Audu, B. S., Ajima, M.N.O. and Pwaspo, P. (2009). The effects of acute concentrations of Indian Siris (Albizia lebbeck) crude bark extract on fingerlings of Oreochromis niloticus (L.) Nigeria Journal of Experimental and Applied Biology, 10(2): 119- 124.
  • Audu, B.S., Ajima, N.O., Akpa L.E. and Kachalla, K. (2009). Effects of crude leaf extract of Moringa oleifera (L.) on Cichlid, Oreochromis niloticus (L.). Animal Production Research Advances 5(4): 274 – 279.
  • Omoregie, E., Ajima, M.N.O. and Keke, I. R. (2003). Effects of sub-lethal concentration of NPK (15:15:15) fertilizer on growth and feed utilization by Toothed Carp Aphosemion gairdneri under laboratory conditions. Journal of Aquatic Sciences, 18(2): 101-104.

Driving the Culture of Excellence