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Biologie de Ethmalosa Fimbriata (Bowdich) en Côte d'Ivoire. 3 - Étude des Migrations en Lagune Ebrié (2021)

Gerlotto, F.

In: http://aquaticcommons.org/id/eprint/7980 | 424 | 2012-03-08 12:52:44 | 7980 | Centre de Recherches Océanographiques, Côte d'Ivoire

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Publication Date: 2021-09-24

Description: Spawning of bonga (Ethmalosa fimbriata Bowdich) takes place in polyhalin waters (Sppt. 〉 5ppt.). Migrations of young fish were studied by the mean of length data observed in different points of the lagoon from the artisanal fishery. Bonga remain 4 months in the hatchery (6 cm), before they expand in the whole lagoon until the age of 9/10 months. After this expansion phase, the fishes come back to the spawning fields (spawning length: 14/15 cm). Postspawning fishes leave the lagoon. Between birth and spawning, bonga are not affected by salinity changes, but reproduction occurs only in waters where salinity is higher than 5ppt.

Keywords: Biology ; Ecology ; Fisheries ; Côte d'Ivoire ; Lagune Ebrié ; Ethmalosa fimbriata ; bonga ; spawning ; salinity

Repository Name: AquaDocs

Type: article

Format: application/pdf

Format: 3-41

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