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Provedor de dados:  5
País:  France
Título:  The stability of the spatial distribution of the pelagic stages of sole as explained by the trajectories of ARGOS satellite
Autores:  Koutsikopoulos, Constantin
Herbland, Alain
Data:  1987
Ano:  1987
Resumo:  The studies of the pelagic stages of Sole (Solea vulgaris , Quensel) in the northern part of the Bay of Biscay are strongly influenced by the recent concepts concerning the importance of the physical processes in the evolution of marine populations. The investigations of the linkage between water masses circulation and year-class strength started in 1986 with the deployment of 3 ARGOS satellite tracked drifters at different depths in parallel with the ichthyoplanktonic surveys. The trajectory of the 7 m drifter (tracking the water masses above the pycnocline) is related to the wind. This drifter leaves the sector of the study after 10 days. After 40 days of variable environmental conditions, the 34 m drifter (situated below the density gradient) was only at 10 miles from the releasing point.

Les etudes sur les stades pelagiques de la Sole (Solea vulgaris, Quensel dans la partie nord du Golfe de Gascogne montrent de faibles differences dans la repartition spatiale durant le developpement embryonnaire et larvaire. La circulation des masses d'eau dans le secteur de la frayere a ete etudiee a l'aide de balises "Argos", su1v1es par, satellite. Les resultats obtenus en 1986 ont ete valides par les operations realisees en 1987. Les differences de trajectoire observees entre les drogues de 7 et de 34 m sont expliquees par la stratification de la colonne d'eau. Aprcs 40 jours de conditions meteorologiques variables, la balise ancree a 34 m etait a 10 milles du point de depart. Ces resultats suggerent que la stabilite spatiale des stades pelagiques peut etre expliquee par un comportement passif des oeufs et des jeunes larves et l'apparition·de preferences concernant la distribution verticale avec l'age.
Tipo:  Text
Idioma:  Inglês
Identificador:  https://archimer.ifremer.fr/doc/00482/59344/62138.pdf

https://archimer.ifremer.fr/doc/00482/59344/
Formato:  application/pdf
Direitos:  info:eu-repo/semantics/openAccess

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