Data/hora: 07/06/2024 00:24:37

Provedor de dados: | 5
País: | France
Título: | Larval history of glass eels, Anguilla anguilla, (Linne, 1758) in migration in coastal and estuarine areas (Adour, Bay of Biscay) as revealed by otolith structure.
Autores: | De Casamajor, Marie-noelle; Lecomte Finiger, Raymonde; Prouzet, Patrick.
Data: | 2001-11
Ano: | 2001
Palavras-chave: | Migration; Larval past; Golf of Biscay; Glass eels; Otolith; Migration; Passé larvaire; Golfe de Gascogne; Civelle; Otolithe.
Resumo: | The embryonic past of glass eels vas studied from the interpretation of microstructures registered on otoliths. The aim of this work is to put in evidence possible seasonal modifications of the growth of otoliths so that differences between otoliths of glass eels caught off marine and estuarine environment. So during the season 1999-2000, from November till March, otolith sampling was realised in the Southwestern part of France, in an estuarine and coastal zone. We observed a spatial and temporal evolution of proportions of the three various types of otoliths taken into account. Glass eels sampled at sea sometimes have a mark on their otoliths indicating the transition in the estuary, especially at the end of the fishing season. Measures of growth marks of otoliths showed that there were no seasonal differences during phases of the transoceanic migration and the crossing of the continental shelf. The radius of otoliths of glass eels sampled at sea was significantly smaller than those sampled in estuary. These results translated homogeneous environmental modifications met by the various larvae groups during the oceanic crossing and during the principal migration season as well as a turn over of these groups during the transition between marine and continental environment.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2001/publication-664.pdf

DOI:10.1016/S0764-4469(01)01378-6

Editor: | Elsevier
Relação: | http://archimer.ifremer.fr/doc/00000/664/
Formato: | application/pdf
Fonte: | Comptes Rendus de l'Academie des Sciences - Series III - Sciences de la Vie (0764-4469) (Elsevier), 2001-11 , Vol. 324 , N. 11 , P. 1011-1019
Fonte: | 2001 Académie des sciences/Éditions scientifiques et médicales Elsevier SAS. All rights reserved