Article Sidebar
Article Details
Issue
Section
Articles
Submission of a paper for publication implies the transfer of the copyright from the author(s) to the publisher upon acceptance. International Formulae Group is therefore the copyright holder after publication of an article in International Journal of Biological and Chemical Sciences, and published articles should not be used for commercial purpose without the written consent of the Editor-in-Chief. They are licensed under a Creative Commons Attribution-Non Commercial-Share Alike 4.0 International License.
Main Article Content
Seasonal variation in fish distribution and physico-chemical parameters of wetland areas in Oyo State, Nigeria
Abstract
A study was conducted to assess the physico-chemical characteristics and fish distribution of wetland areas of Oyo State. The results revealed incidence of pollution as a result of agricultural pollution mainly due
to use of agrochemicals. The water pH, Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) were below the World Health Organization (WHO) and FEPA permissible limit in all the locations with
the exception of Ajinapa where 5.0, 226.8 mg/l and 372.6 mg/l were recorded for pH, BOD and COD respectively. The level of agrochemical usage varied significantly (p < 0.05) among the locations examined
with Ajinapa (Orire LGA) having the highest rate (65.0%) while papa-Eleye (Oluyole L.G.A) had the lowest (15.0%). A total of 16988 individuals, 11 fish species belonging to 7 families were found in 11 locations with Oreochromis niloticus (30.6%) and Clarias gariepinus (20.8%) dominating the catches. From the result, it is clear that high level of pollution in Ajinapa (Orire LGA) location is traceable to the use of agrochemical and
therefore there is a need to take appropriate measure to preserve the aquatic life.
Keywords: Water pollution, wetland, fish biodiversity, Agrochemicals.
to use of agrochemicals. The water pH, Biological Oxygen Demand (BOD) and Chemical Oxygen Demand (COD) were below the World Health Organization (WHO) and FEPA permissible limit in all the locations with
the exception of Ajinapa where 5.0, 226.8 mg/l and 372.6 mg/l were recorded for pH, BOD and COD respectively. The level of agrochemical usage varied significantly (p < 0.05) among the locations examined
with Ajinapa (Orire LGA) having the highest rate (65.0%) while papa-Eleye (Oluyole L.G.A) had the lowest (15.0%). A total of 16988 individuals, 11 fish species belonging to 7 families were found in 11 locations with Oreochromis niloticus (30.6%) and Clarias gariepinus (20.8%) dominating the catches. From the result, it is clear that high level of pollution in Ajinapa (Orire LGA) location is traceable to the use of agrochemical and
therefore there is a need to take appropriate measure to preserve the aquatic life.
Keywords: Water pollution, wetland, fish biodiversity, Agrochemicals.
