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

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

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.

References


Adebiyi, F.A., 2012. Aspects of reproductive biology of big eye grunt Brachydeuterus auritus (Valenciennes, 1832). Nat. Sci., 10(2), 19-24.

Adebiyi, F.A., 2013. Growth pattern of the big eye grunt Brachydeuterus auritus (Valenciennes, 1832) off Lagos, Nigeria. India. J. Fish., 60(3), 9-12.

Asabere-Ameyaw, A., 2001. Observations on the reproductive biology and recruitment of the big eye grunt Brachydeuterus auritus (Pisces: Haemulidae), in Ghana. J. Ghana. Sci. Assoc., 3, 14-21.

Bannerman, P.O., Cowx, I.G., 2002. Stock assessment of big eye grunt (Brachydeurerus auritus Val. 1831) fishery in Ghanaian coastal waters. Fish. Res., 59, 197-207.

Bannister, J.V., 1976. The length-weight relationship, condition factor and gut content of dolphin fish Coryphana hippurus in the Mediterranean. J. Fish. Biol., 9, 335-338.

Barro, M., 1979. Reproduction de Brachydeurerus auritus (Val. 1831) Poissons, Pomadasyidae en Côte d’Ivoire. Doc. Sci. Cent. Rec. Océanogr. Dakar-Thiaroye., 68, 57-62.

Ben-Tuvia, A., Mckay, R., 1986. Haemulidae, in: Whitehead, P.J.P., Bauchot, M.-L., Hureau, J.-C., Nielsen, J., Tortonese, E. (Eds), Fishes of the north-eastern Atlantic and the Mediterranean. Unesco, Paris., 2, 858-864.

FAO, 1981. Species identification sheets for fishing purpose, Eastern central Atlantic. Field guide to the commercial marine resources of the Gulf of Guinea, 3, 99-102.

Fontana, A., 1969. Etude de la maturité sexuelle des sardinelles: Sardinella eba (val) et sardinella aurita C. et V. de la région de Pointe-Noire. Cah. O.R.S.T.O.M., Sér. Océanogr., 7(2), 102-113.

Fontana, A., Bouchereau, T.J., 1976. Croissance de Brachydeuterus auritus au Congo. Doc. Sci. O.R.S.T.O.M. (Pointe Noire) N.S., 47, 8.

Ikusemiju, K., Olaniyan, I.O., Garba, E., 1979. Food habits and sex ratios of the big eye Brachydeuterus auritus (Val.) off Lagos coast, Nigeria (Pisces, Pomadasyidae). Bull. IFAN. Sér. A., 41, 863-874.

Longhurst, A.R., 1964. A study of the Nigeria trawl fishery. Bullétin. IFAN. Sér. A., 26, 686-700.

Mellinger, J., 2002. Sexualité et reproduction des poissons. CNRS EDITIONS, Paris, 346.

Quinn II, T.J., Deriso, R.B., 1999. Quantitative fish dynamics. Oxford University Press, New-York, 542.

Samb, B., 2003. On the biology of Brachydeuterus auritus from Senegalese waters, in: Palomares, Samb, M.L.D., Diouf, B.T., Vakily, T.M., Pauly, D. (Eds.), Fish biodiversity: Local studies as basis for global inferences. ACP-EU Fish. Res. Rep., 14, 1-13.

Schneider, W., 1990. FAO species identification sheets for fishery purposes. Field guide to the commercial marine resources of the Gulf of Guinea. Prepared and published with the support of the FAO Regional Office for Africa. Rome. FAO., 69.

Schneider, W., 1992. Fiches FAO d'identification des espèces pour les besoins de la pêche. Guide de terrain des ressources marines commerciales du golfe de Guinée. Préparé et publié avec la collaboration du Bureau régional de la FAO pou l'Afrique. Rome. FAO., 22-23.

Troadec, J.P., 1971. Biologie et dynamique d’un Sciaenidae ouest africain. Pseudotolithus senegalensis. Doc. Sci. CRO. Abidjan., 2(3), Déc. 231.

Vazzoler, A.E.A.M., 1996. Biologia da reproducão de Peixes Teleósteos. Teoria prática. Maringá, 169.


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