Growth of the dusky grouper "Epinephelus marginatus" (Linnnaeus, 1758) (Teleostei, Serranidae), in the Natural Marine Reserve of Lavezzi Islands, Corsica, France

• Autores: J. L. Bouchereau, P. Body, C. Chauvet
• Localización: Scientia Marina, ISSN 0214-8358, Vol. 63, Nº. 1, 1999, págs. 71-77
• Idioma: inglés
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• Resumen

  • The growth of Epinephelus marginatus living in the Natural Marine Reserve of the Lavezzi Islands was studied using the von Bertalanffy model. The growth parameters of this model were: L8=135.9 cm, K=0.08, to=-0.80 years. The relationship between length and weight was W=12.5 10-2 TL2.60. Grouper lengths were similar in the Lavezzi Islands and in North Tunisia. The relative abundance of trophic resources in the Lavezzi Islands, due to a positive "reserve" effect and enhanced by a small population density of groupers, has great consequences on growth, compensating the effect of lower water temperature. A plausible explanation for the similarity between these two populations is that they belong to a single metapopulation.