Reproductive biology of big-eye grunt Brachydeuterus Auritus in Ivory coast fishery (West Africa)

Authors

  • Soumaila Sylla Centre de Recherches Océanologiques (CRO), B.P.V 18 Abidjan, Côte d’Ivoire
  • Tizié Thierry Zan-Bi Centre de Recherches Océanologiques (CRO), B.P.V 18 Abidjan. -UFR Environnement, Université Jean Lorougnon Guédé Daloa BP 150 Daloa, Côte d'Ivoire
  • Kouadio Justin Konan Centre de Recherches Océanologiques (CRO), B.P.V 18 Abidjan, Côte d'Ivoire
  • Christian Bernard Tia Centre de Recherches Océanologiques (CRO), B.P.V 18 Abidjan, -UFR Biosciences, Université Félix Houphouët Boigny Abidjan, 22 B.P. 582 Abidjan 2, Côte d'Ivoire
  • Jean-André Tinkoudgou Kabre Université de Bobo-Dioulasso, Institut du Développement Rural, Laboratoire de Recherche et de Formation en Pêche et Faune 01 B.P 1091 Bobo-Dioulasso 01, Burkina Faso
  • Tidiani Kone UFR Environnement, Université Jean Lorougnon Guédé Daloa BP 150 Daloa, Côte d'Ivoire

Keywords:

Haemulidae, Big-eye grunt, Demersal, Reproductive biology, Ivory coast

Abstract

Reproductive biology of Big-eye grunt, Brachydeuterus auritus resulting from Ivory Coast marine fishery were studied by monthly sampling from August 2013 to July 2014. Samplings were carried out along the Ivorian littoral. A total of 731 fish with a body length of 8.0 to 22.7 cm folk length (LF) and body weight of 9.2 to 204.6 g were used for this study. According this study, the sex ratio was 1:0.82 (male to female). The sex ratio was significantly different from the expected theoretically 1: 1 distribution except June, September and December. Monthly gonadosomatic index and macroscopically determined gonad stages indicated that B. auritus spawned from February to July with a greater activity from February to May. The condition factor indicated that B. auritus were in good condition, females had higher condition factor than the males. Lengths at 50% maturity were similar with 12.93 cm LF for males and 12.71 cm LF for females. The coefficient b (3.02; 3.07 and 3.04 respectively for males, females and both sexes) of the length-weight relationship was reflecting isometry.

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Published

2016-05-15

How to Cite

Sylla, S. ., Zan-Bi, T. T. ., Justin Konan, K. ., Bernard Tia, C. ., Tinkoudgou Kabre, J.-A. ., & Kone, T. . (2016). Reproductive biology of big-eye grunt Brachydeuterus Auritus in Ivory coast fishery (West Africa). Scientific Journal of Biological Sciences, 5(5), 158-166. Retrieved from http://sjournals.com/index.php/sjbs/article/view/380

Issue

Vol. 5 No. 5 (2016): May

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Original Article

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Copyright (c) 2020 Soumaila Sylla, Tizié Thierry Zan-Bi, Kouadio Justin Konan, Christian Bernard Tia, Jean-André Tinkoudgou Kabre, Tidiani Kone

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