Length-Weight Relationship and Spawning Season of Bagrus bayad (Forsskal, 1775) in Yamama Lake Kebbi State, Nigeria

Jega Ibrahim Shehu, Daramola Ismail Maryam and Rasaq Ibrahim
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Rasaq Ibrahim: Department of Forestry and Fisheries, Kebbi State University of Science and Technology, Nigeria

Oceanography & Fisheries Open Access Journal, 2020, vol. 12, issue 4, 95-100

Abstract: The study was conducted to investigate the Length-weight relationship and spawning season of Bagrus bayad from Yamama Lake, Kebbi State Nigeria. Fresh fish catches of B. bayad were collected in batches from the fish landing site of Yamama Lake for a period of six (6) months, from April 2019 to September 2019. The parameter of Length-weight relationship of sampled fish was evaluated using the equation W = aLb. The Gonadosomatic Index (GSI) was determined using the formula, (Gonad weight/ Total body weight) x 100. The regression analysis of Length-weight relationship for the male fishes was estimated as W= 0.006 L3.25 indicating positive allometric growth pattern. For the females, the regression analysis was found as W= 0.009 L3.077 also indicating positive allometric growth pattern. Monthly mean GSI values for female were highest in June (2.79), indicating the peak spawning season. For increased spawning of B. bayad in Yamama lake, it was recommended that fishing should be restricted in June.

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Date: 2020
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Persistent link: https://EconPapers.repec.org/RePEc:adp:jofoaj:v:12:y:2020:i:4:p:95-100

DOI: 10.19080/OFOAJ.2020.12.555841

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