| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Modelling seasonal and annual variation in size at functional maturity in the European lobster (Homarus gammarus) from self-sampling data
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| Autores: |
Laurans, Martial
Fifas, Spyros
Demaneche, Sebastien
Brerette, Stéphane
Debec, Olivier
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| Data: |
2009-10
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| Ano: |
2009
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| Palavras-chave: |
Self sampling
Homarus gammarus
Functional maturity
Catchability
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| Resumo: |
Fishers from Le Croisic (France) measure all the lobsters (Homarus gammarus) they capture, indicating their sex and whether the females are ovigerous or non-ovigerous. Between 2003 and 2006 and mainly between April and September, 16 884 lobsters were measured in this manner. These self-sampled data were used to study catchability and functional maturity of lobsters. The sex ratio was 50%, and catchability did not change if a female was ovigerous or non-ovigerous. With the help of a logistic function, a relationship was established between body size and the proportion of ovigerous females. For the study area, 100% of the females were mature upon reaching a carapace length (CL) of 115 mm, and the proportion of ovigerous females reached 70% each year. The L50 value evolved over a CL of 103106 mm. From the size when 100% of the females matured (115 mm), there was a larger proportion of ovigerous females than in other studies carried out in more northern European areas.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/2009/publication-7319.pdf
DOI:10.1093/icesjms/fsp166
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| Editor: |
Oxford university press
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| Relação: |
http://archimer.ifremer.fr/doc/00000/7319/
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| Formato: |
application/pdf
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| Fonte: |
ICES Journal of Marine Science (1054-3139) (Oxford university press), 2009-10 , Vol. 66 , N. 9 , P. 1892-1898
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| Direitos: |
2009 ICES/CIEM
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