Survie des langoustines (Nephrops norvegicus ) s'echappant d'un cul de chalut

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Éditeur(s) ICES-CM-1982/B:14
Identifiant documentaire 9-2339
Identifiant OAI oai:archimer.ifremer.fr:2339
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Auteur(s): Morizur, Yvon,Charuau, Anatole,Rivoalen, Jean-jacques
Mots clés size distribution crustacean fisheries mesh selectivity trawling fishing mortality survival
Date de publication 01/01/1982
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Langue fre
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Droits de réutilisation info:eu-repo/semantics/openAccess

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The survival rate of Nephrops escaping through the cod-end was recently studied in the Bay of Biscay. Over the 45mm meshed cod-end was put a 15mm meshed net in order to retain the Nephrops escaping though, the cod-end. Soon after hauling escaped Nephrops were returned on the sea-bed into cages. After an inversion of 60-78 hours, the average survived rate was about 70 %. However it was found increasing with the size of individuals. The value obtained, which is only a result of- the action oh several factors, may be lower than the true value. I he evolution, of this biological parameter according to the mesh size is discussed in the scope of assessments
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