Domain François, Jouffre Didier, Caverivière Alain. (2000). Growth of Octopus vulgaris from tagging in Senegalese waters. Journal of the Marine Biological Association of the United Kingdom, 80, 699-705. ISSN 0025-3154.
Titre du document
Growth of Octopus vulgaris from tagging in Senegalese waters
Journal of the Marine Biological Association of the United Kingdom, 2000,
80, 699-705 ISSN 0025-3154
The growth of Octopus vulgaris (Mollusca: Cephalopoda) in tanks and the sea was modelled and calculated following tagging studies in Senegal. Octopus exhibits a large individual variability in growth and the exponential growth curve is the best fitting theoretical model among other usual models tested. Globally, the growth rates were comparable in the sea and in tanks. Growth rates for the hot season were lower than those for the cold season. Applied to in situ data, the statistical tests showed that females grow more quickly than males. Life expectancy was estimated at between 12 and 14 months. These results question the previous growth curves for the region, all of which were obtained from modal analysis using size or weight-frequencies and were used during stock assessments of this important resource off the north-west African coast.
Plan de classement
Stocks [040PECHE03]
Descripteurs
PECHE DE MOLLUSQUES ; ESPECE COMMERCIALE ; ESTIMATION DE STOCK ; CROISSANCE ; MARQUAGE ; MALE ; FEMELLE ; ESPERANCE DE VIE ; DYNAMIQUE DE POPULATION ; MODELISATION ; VARIATION SAISONNIERE
