Reproductive biology of barracuda, Sphyraena Guachancho, on Ivorian Coasts (Eastern Central Atlantic)

Type Article
Date 2019
Language English
Author(s) Akadje C. M. A.1, 2, Amon Y. N.3, N'Da K.4, Le Loc'h F.5
Affiliation(s) 1 : Ctr Rech Oceanol, Lab Ressources Aquat Vivantes, BP V 14 18, Abidjan, Cote Ivoire.
2 : Univ Man, UFR Forestry & Environm Agron Engn, BP 20, Man, Cote Ivoire.
3 : Univ Peleforo Gon Coulibaly, UFR Sci Biol, BP 1328, Korhogo, Cote Ivoire.
4 : Univ Abobo Adjame, Lab Biol Cytol Anim, 02 BP 801, Abidjan 16, Cote Ivoire.
5 : Univ Brest, CNRS, IFREMER, LEMAR,IUEM,IRD, F-29280 Plouzane, France.
Source Vie Et Milieu-life And Environment (0240-8759) (Observatoire Oceanologique Banyuls), 2019 , Vol. 69 , N. 2-3 , P. 177-185
Keyword(s) SPHYRAENA GUACHANCHO, BREEDING PERIOD, SEXUAL MATURITY, COTE D'IVOIRE
Abstract

To provide information for improving barracuda stock management on the Ivorian coast, the reproductive biology (length-weight relationship, sexual development and size at first maturity) of Sphyraena guachancho was studied in relation to the marine seasons and fish size classes. Samples were obtained between July 2010 and June 2011 from commercial fisheries in Abidjan fishing port. A total of 662 specimens (328 females, 334 males) with sizes ranging from 19 to 63 cm FL were analyzed. The sex ratio of Sphyraena guachancho was found to be slightly in favour of males (1: 0.98). The length-weight relationship is isometric for both sexes. The gonadosomatic index (GSI), hepatosomatic index (HSI), condition factor (K) and percentage of mature individuals for both sexes reveal that the breeding period corresponds to the Low Cold Season, mainly during January. The size at first maturity of the Sphyraena guachancho population is 28.8 cm. It was not significantly different between males (27.8 cm) and females (30.3 cm). Sexual maturity was found to be earlier than measured in previous studies at different locations.

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Akadje C. M. A., Amon Y. N., N'Da K., Le Loc'h F. (2019). Reproductive biology of barracuda, Sphyraena Guachancho, on Ivorian Coasts (Eastern Central Atlantic). Vie Et Milieu-life And Environment, 69(2-3), 177-185. Open Access version : https://archimer.ifremer.fr/doc/00607/71873/