A survey of fish fauna distribution and abundance in Gwaigwaye Reservoir Katsina State, Nigeria

N Lawal,M.I Nafiu

doi:10.4314/jasem.v24i12.27

Abstract

The study on a survey of fish fauna distributions and abundance in Gwaigwaye Reservoir, Katsina State was carried out from May 2013 to April 2014 to establish physical, chemical, and biological parameters (fish) of Gwaigwaye reservoir. Four sampling stations were selected. Some physico-chemical parameters were also determine to assess the level of pollution of the reservoir using standard methods and procedures which were correlated with the different fish species to determine fish abundance and distributions. Analysis of variance indicates no significant difference in fish fauna distribution and abundance among the four stations (P>0.05). The result indicated Fish fauna percentage composition were Tilapia zilli (17.32%), Clarias gariepinus (16.17%), Oreochromis niloticus (15.27%), Lates niloticus (13.80%), Bagrus. bayad (12.91%), Momyrus senegalensis (9.90%), Labeo senegalensis (7.41%) and Synodontis clarias (7.28%).

Highlights

The study on a survey of fish fauna distributions and abundance in gwaigwaye reservoir, katsina state was carried out from May 2013 to April 2014 to establish physical, chemical, and biological parameters of Gwaigwaye reservoir
The water was sampled at the surface level by dipping four of the one litre plastic sampling bottle containing 2ml of KMN04 in each of the four sites for Biological Oxygen Demand (BOD) and Dissolve Oxygen (DO) together with another four of the five litre bottles by sliding them over the upper surface of water with their mouth open against the water current to permit undisturbed passage of the water into the bottle, it was transported to hydrobiology laboratory for analysis of physicochemical parameters to determine the suitability of the water for fish survival
The results of the analysis carried out on the water and fish samples collected from gwaigwaye reservoir showed variations in the fish species based on distribution and abundance of the fish species present in the reservoir

Summary

Introduction

The study on a survey of fish fauna distributions and abundance in gwaigwaye reservoir, katsina state was carried out from May 2013 to April 2014 to establish physical, chemical, and biological parameters (fish) of Gwaigwaye reservoir. Nigeria is blessed with about 853,600 hectares of freshwater capable of producing over 1.5 million metric tonnes of fish annually (FAO, 2009) Because of this there is need to exploit means of using these precious resources, even though there are some hindrances, which includes effects of domestic and agricultural wastes on the water quality and aquatic life, physical and chemical factors like temperature, turbidity, pH, dissolved gases (O2 and CO2), salts and nutrients. It is no doubt; reservoirs have contributed to. The objectives of this paper are to determine the monthly abundance and percentage of fish landing in gwaigwaye reservoir and to determine the relationship between fish fauna distribution and variation in physico-chemical parameters of gwaigwaye reservoir

Objectives

Methods

Results

Conclusion