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	Provedor de dados ArchiMer (2) Autor Brehmer, Patrice (2) Diouf, Malick (2) Fall, Massal (2) Kantoussan, Justin (2) Ba, Kamarel (1) Balde, Bocar Sabaly (1) Baldé, Bocar Sabaly (1) Ekau, Werner (1) Sow, Fambaye N. (1) Sow, Fambaye Ngom (1) Mais... Palavra-chave Data poor fisheries (2) West Africa (2) Environmental variability (1) Fisheries management (1) Shared stocks (1) Size structure (1) Small pelagic (1) Small pelagic fish (1) Small scale fisheries (1) Spawning period (1) Mais... Tipo do documento Text (2) Ano 2019 (2) País France (2) Idioma Inglês (2)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 2 Primeira ... 1 ... Última Variability of key biological parameters of round sardinella Sardinella aurita and the effects of environmental changes ArchiMer Balde, Bocar Sabaly; Sow, Fambaye N.; Ba, Kamarel; Ekau, Werner; Brehmer, Patrice; Kantoussan, Justin; Fall, Massal; Diouf, Malick. We examined growth rates and reproductive characteristics of Sardinella aurita off Senegal and other coastal areas over a 20 year period (1995-2014) to determine how they relate to variations in environmental characteristics of coastal waters. Based on fish length-frequency data and a coastal upwelling index, we found that S. aurita recruitment tends to occur during the periods of most intensive upwelling (March-April off Senegal). Peak reproduction corresponds to periods of low sea-surface temperature (in February or March). The sex ratio was remarkably consistent during the 30 year study period and so was not affected by environmental changes. We hypothesise that S. aurita takes advantage of the higher zooplankton productivity that occurs in coastal... Tipo: Text Palavras-chave: Data poor fisheries; Environmental variability; Size structure; Small pelagic; Spawning period; West Africa. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00491/60229/67183.pdf Fish-length based indicators for improved management of the sardinella fisheries in Senegal ArchiMer Baldé, Bocar Sabaly; Fall, Massal; Kantoussan, Justin; Sow, Fambaye Ngom; Diouf, Malick; Brehmer, Patrice. Fisheries management is difficult especially in developing countries where there are little or no data available for stock assessment. Here, a simple model based on the length-based Bayesian biomass (LBB) is applied to length frequencies collected on the two sardinella species (Sardinella maderensis and S. aurita) collected in Senegalese waters (2004 to 2014) to diagnose these stocks and to support the development of fishery management options that may improve the livelihoods of artisanal fishermen. Annual mean length of both species of sardinella showed a large variation during the decadal study period. It is assumed that such variations are due to environmental changes. According to our results, based on the current exploitation rate, both sardinella... Tipo: Text Palavras-chave: Data poor fisheries; Fisheries management; Shared stocks; Small scale fisheries; Small pelagic fish; West Africa. Ano: 2019 URL: https://archimer.ifremer.fr/doc/00512/62318/67184.pdf Registros recuperados: 2 Primeira ... 1 ... Última

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