Physico-chemical parameters in relation to fish abundance in Daberam Reservoir, Katsina State, Nigeria

A survey of physico-chemical parameters in relation to fish abundance in Daberam reservoir Katsina state was conducted for a period of seven months, from March-September,2009. Physico-chemical parameters studied include temperature, water transparency, pH, dissolved oxygen, ammonia and nitrate. Eleven fish species were identified namely; Clarias gariepinus, Tilapia zilli, Oreochromis niloticus, Schilbedea micropogon, Sarotherondon galilaeus,Tilapia guntheri, Lates niloticus, Schilbe micropogan, Alestes nurse, Protepterus annectens and Mormyrus rume. The result of physical parameters studied showed that temperature ranges from 25.8oC-30.8oC. The PH ranges from 7.3-8.9. Electrical conductivity (E.C.) ranges from 0.02-0.13 (μs/cm) while transparency ranges from 0.18m-0.69m.The chemical parameters analysis showed that, Dissolved Oxygen (D.O), Biological oxygen demand (BOD5), Ammonia and Phosphate concentrations in the reservoir ranges between 6.37-10.93mg/l, 3.16-5.15mg/l, 1.5-2.5mg/l and 2.0-5.0mg/l respectively. All the results obtained were within the results obtained in African freshwater bodies and can sustain survival of both fish and other aquatic fauna in the reservoir.

Key Words: Physico-chemical, Dissolved Oxygen, Fish, Daberam Reservoir.

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