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Please use this identifier to cite or link to this item: http://bsuir.bsum.edu.ng:8080/jspui/handle/11409/363

Title: FISHERY ECOLOGY OF GBEDIKERE LAKE IN KOGI STATE NIGERIA
Authors: ADEYEMI, OLUSEGUN SAMUEL
Keywords: FISHERY, ECOLOGY, GBEDIKERE LAKE, KOGI STATE
Issue Date: Jan-2010
Abstract: The fishery ecology of Gbedikere Lake located in Bassa, Kogi State of Nigeria, was undertaken over a period of twenty four months from October, 2006 to September, 2008. Fish were caught using experimental gill net stretched meshes ranging from 1.27cm to 12.7cm. Water quality parameters of temperature, p11, dissolved oxygen, conductivity, total dissolved solid and transparency showed that the Lake exhibits a nutrient fair system. These water quality parameters were found to be within the range expected for freshwater bodies. Interrelationships among the water quality parameters were found to be beneficial for fish production. Experimental gill nets revealed 12 species from 10 families. The catches were dominated by cichlids, which constituted over 30.91% of the total number of the fish caught. Fish abundance was higher at high water level. Catch per unit of effort ranged from 14.40kg per 1000sqm to 32.20kg per 1000sqm in experimental gill net. Frame assessment revealed six villages along the Lake as well as 48 fishermen operating on the lake. Catch assessment gave an estimated mean annual value landing of 136.9 metric tons per annum while experimental gill nets estimated the same to be 420 metric tons. Intra-specific and inter-specific relationships existing among the fish species on the Lake were revealed. Feeding was found to be intense during the warm water while reproduction among the species peaked during the rainy season. Growth was found to be allometric among the species conforming to the growth factor W = aLb. Factors affecting fish population were discussed and management strategy for the Lake fishery was proposed.
URI: http://bsuir.bsum.edu.ng:8080/jspui/handle/11409/363
Appears in Collections:Biological Science

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