| Registro completo |
| Provedor de dados: |
OceanDocs
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| País: |
Belgium
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| Título: |
Biomass, stock density and the maximum sustainable yield available to a line fishery for Pristipomoides filamentosus (Valenciennes, 1830) on the Northwestern submarine promontory of Saya de Malha Bank
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| Autores: |
Grandcourt, E.M.
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| Data: |
2006-09-28
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| Ano: |
1994
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| Palavras-chave: |
Saya de Malha
Mothership Pristipomoides filamentosus Fishing operations Line fishing Potential yield Stock assessment Line fishing Stock assessment Fishing operations
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| Resumo: |
The mothership/dory fishing operation 'Pecheur Breton' spent 13 days fishing at the northwestern submarine promontory of Saya de Malha Bank between 24th February and 14th March 1993. The mothership fished using 12 dories which were equipped with echo-sounders and electric fishing reels. A total of 74.3 tonnes of fish was caught in the depth range of 55 to 130 m. of which the blue spotted jobfish (Pristipomoides filamentosus) represented 80%. The catch rates were observed to decreased with time and could not be attributed to changes in climatic conditions, fishing depth, fishing method or bait type. The initial biomass of Pristipomoides filamentosus at the northwestern submarine promontory of Saya de Malha Bank was estimated at 76.1 tonnes through application of the Leslie constant catchability model. Biomass densities of 2,478 kg/km² and 1,264 kg/km-1 were obtained by applying the initial biomass estimates to the surface area of the grounds fished. The quantity removed by the mothership/dory fishing operation was found to be more than 3 times the estimated maximum sustainable yield.
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| Tipo: |
Report
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| Idioma: |
Inglês
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| Identificador: |
http://hdl.handle.net/1834/1330
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| Editor: |
Victoria: Seychelles Fishing Authority
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| Formato: |
395911 bytes
592022 bytes
application/pdf
application/pdf
12
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| Direitos: |
http://creativecommons.org/licenses/by-nc/3.0/
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