International Journal of Innovative Research and Development

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Length Weight Relationship and Condition Factor of Four Commercially Important Fish Species at ERO Reservoir, Ekiti State, Nigeria


Affiliations
1 Department of Biology, Adeyemi College of Education, Ondo, Ondo State, Nigeria
2 Department of Fisheries and Aquaculture Technology, Federal University of Technology, Akure, Ondo State, Nigeria
 

 8464 fishes captured at Ero reservoir bimonthly using various gill net mesh sizes 50.8mm, 63.5mm, 78.2mm, 88.9mm and 101.6mm were identified into four (4) species as Oreochromis niloticus, Coptodon zillii, Tilapia guineensis and Clarias gariepinus. These fishes belong to two (2) families of Cichilidae and Clariidae. Specimens were weighed to the nearest grams and standard length were measured to the nearest centimeters and the highest species number was recorded for Cichilidae family. Growth coefficient b of the LWR ranged from 1.13 to 3.43, Coptodon zillii, Tilapia guineensis and Clarias gariepinus  species showed negative allometric growth pattern while Oreochromis niloticus had  positive allometric growth. Species diversity was determined by Simpsons index while dominance and evenness by Shannon weiner index of diversity. Simpsons index (D) = 0.42, Simpson’s index of diversity (1-D) = 0.57, Simpsons Reciprocal index (1/D) = 0.43, Evenness = 0.57. Water quality parameter showed slight variation between rainy and dry seasons.


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  • Length Weight Relationship and Condition Factor of Four Commercially Important Fish Species at ERO Reservoir, Ekiti State, Nigeria

Abstract Views: 179  |  PDF Views: 1

Authors

O. Tolulope Adebola
Department of Biology, Adeyemi College of Education, Ondo, Ondo State, Nigeria
O. A. Bello Olusoji
Department of Fisheries and Aquaculture Technology, Federal University of Technology, Akure, Ondo State, Nigeria
A. O Fagbenro
Department of Fisheries and Aquaculture Technology, Federal University of Technology, Akure, Ondo State, Nigeria
T. A. Sabejeje
Department of Biology, Adeyemi College of Education, Ondo, Ondo State, Nigeria

Abstract


 8464 fishes captured at Ero reservoir bimonthly using various gill net mesh sizes 50.8mm, 63.5mm, 78.2mm, 88.9mm and 101.6mm were identified into four (4) species as Oreochromis niloticus, Coptodon zillii, Tilapia guineensis and Clarias gariepinus. These fishes belong to two (2) families of Cichilidae and Clariidae. Specimens were weighed to the nearest grams and standard length were measured to the nearest centimeters and the highest species number was recorded for Cichilidae family. Growth coefficient b of the LWR ranged from 1.13 to 3.43, Coptodon zillii, Tilapia guineensis and Clarias gariepinus  species showed negative allometric growth pattern while Oreochromis niloticus had  positive allometric growth. Species diversity was determined by Simpsons index while dominance and evenness by Shannon weiner index of diversity. Simpsons index (D) = 0.42, Simpson’s index of diversity (1-D) = 0.57, Simpsons Reciprocal index (1/D) = 0.43, Evenness = 0.57. Water quality parameter showed slight variation between rainy and dry seasons.