| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Observation of the larval distribution of two soleidae: Solea solea (L.) and Microchirus variegatus (Donovan) in the Bay of Biscay
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| Autores: |
Lacroix, Nicole
Rouxel, Catherine
Dorel, Didier
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| Data: |
1991
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| Ano: |
1991
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| Resumo: |
Surveys for larval stages of Dover sole (Solea solea) and Thickback sole (Microchirus variegatus) were carried out in the northern part of the bay of Biscay between 1985 and 1989. The spawning periods of these species overlap but the spawning areas are different since young larvae of M. variegatus are recorded more offshore than those of S. solea. In addition, in spite of a similar behaviour the first species undergo smaller vertical migrations than the second and never reach surface layers. These two observations suggest why Thickhack sole larvae on the contrary of Dover sole larvae never reach coastal areas and achieve whole development in water deeper than 40 m. The life cycle of this species developing thus entirely offshore.
Des observations sur les phases pélagiques larvaires de sole (Solea solea) et de sole-perdrix (Microchirus variegatus) ont été menées dans le nord du golfe de Gascogne de 1985 à 1989. Les périodes de reproduction de ces 2 espèces sont similaires, mais on observe un décalage dans la localisation des aires de reproduction puisque les jeunes larves de M. variegatus se situent plus au large que celles de S. solea. Sur la verticale, malgré un comportement relativement semblable, les larves de M. variegatus ont des migrations nyctémérales moins prononcées que celles de S. solea et en particulier n'atteignent jamais les couches de surface. Ces deux observations suggèrent que les larves de sole arrivent à gagner les zones littorales pour y continuer leur développement alors que les larves de sole-perdrix restent sur les fonds supérieurs à 40 m, leur cycle de vie se déroulant ainsi entièrement au large.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00394/50571/51262.pdf
http://archimer.ifremer.fr/doc/00394/50571/
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| Formato: |
application/pdf
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| Direitos: |
1991 International Council for the Exploration of the Sea
info:eu-repo/semantics/openAccess
restricted use
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