Volume 26, Issue 2, May 2019, Pages 477–485
KOUASSI SYLVAIN KONAN1, YAO LAURENT ALLA2, MOUSTAPHA DIABY3, and KONAN N’DA4
1 Département aquaculture, Centre de Recherches Océanologiques Bp 18 Abidjan, Côte d’Ivoire
2 Département aquaculture, Centre de Recherches Océanologiques Bp 18 Abidjan, Côte d’Ivoire
3 Institut de Gestion Agro-pastorale, Université Péléforo Gon coulibaly, Bp 1328 Korhogo, Côte d’Ivoire
4 UFR Sciences de la Nature, Université Nangui Abrogoua 02 Bp 801 Abidjan, Côte d’Ivoire
Original language: French
Copyright © 2019 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Reproduction and natural mortality of Polynemids (Polydactylus quadrifilis, Galeoides decadactylus and Pentanemus quinquarius) have been study through weighing and the catches of sizes of those caught by the marine artisanal fishermen in Grand Lahou (Côte d’Ivoire). Study of the monthly variations of gonado-somatic-idex (GIS) showed that the threadfins recur during the dry season, from november to march. Those of liver-somatic-index (LSI) and factor condition (K) indicated that these fishes use their liver and muscles reserves to develop gonad. Length at first maturity was estimated based on the P logistic model. The Polynemids die massively during the raining season (april to october), which constitute the cold periods of the year.
Author Keywords: Reproduction , naturelal mortality , Polydactylus quadrifilis , Galeoides decadactylus , Pentanemus quinquarius.
KOUASSI SYLVAIN KONAN1, YAO LAURENT ALLA2, MOUSTAPHA DIABY3, and KONAN N’DA4
1 Département aquaculture, Centre de Recherches Océanologiques Bp 18 Abidjan, Côte d’Ivoire
2 Département aquaculture, Centre de Recherches Océanologiques Bp 18 Abidjan, Côte d’Ivoire
3 Institut de Gestion Agro-pastorale, Université Péléforo Gon coulibaly, Bp 1328 Korhogo, Côte d’Ivoire
4 UFR Sciences de la Nature, Université Nangui Abrogoua 02 Bp 801 Abidjan, Côte d’Ivoire
Original language: French
Copyright © 2019 ISSR Journals. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
Abstract
Reproduction and natural mortality of Polynemids (Polydactylus quadrifilis, Galeoides decadactylus and Pentanemus quinquarius) have been study through weighing and the catches of sizes of those caught by the marine artisanal fishermen in Grand Lahou (Côte d’Ivoire). Study of the monthly variations of gonado-somatic-idex (GIS) showed that the threadfins recur during the dry season, from november to march. Those of liver-somatic-index (LSI) and factor condition (K) indicated that these fishes use their liver and muscles reserves to develop gonad. Length at first maturity was estimated based on the P logistic model. The Polynemids die massively during the raining season (april to october), which constitute the cold periods of the year.
Author Keywords: Reproduction , naturelal mortality , Polydactylus quadrifilis , Galeoides decadactylus , Pentanemus quinquarius.
Abstract: (french)
La reproduction et la mortalité naturelle des Polynémidés (Poydactylus quadrifilis, Galeoides decadactylus et Pentanemus quinquarius) ont été étudiées à partir des débarquements de la pêcherie artisanale maritimes de Grand Lahou (Côte d’Ivoire). L’étude des variations mensuelles des rapports gonado-somatiques (RGS) montrent que les capitaines se reproduisent pendant la saison sèche, de novembre à mars. Celles des rapports hépato-somatiques (RHS) et du facteur de condition (K) traduisent que ces poissons utilisent les réserves hépatiques et musculaires pour la maturation des gonades. Les Polynemidés étudiés meurent massivement pendant les saisons de pluies (avril à octobre), qui constituent les périodes froides de l’année.
Author Keywords: Reproduction , mortalité naturelle , Polydactylus quadrifilis , Galeoides decadactylus , Pentanemus quinquarius.
How to Cite this Article
KOUASSI SYLVAIN KONAN, YAO LAURENT ALLA, MOUSTAPHA DIABY, and KONAN N’DA, “Reproduction et mortalité naturelle des poissons capitaines: Polydactylus quadrifilis (Cuvier, 1829), Galeoides decadactylus (Bloch, 1795) et Pentanemus quinquarius (Linné, 1758) de la pêcherie artisanale maritime de Grand-Lahou (Côte d’Ivoire),” International Journal of Innovation and Applied Studies, vol. 26, no. 2, pp. 477–485, May 2019.
