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Revista Brasileira de Oceanografia

versão impressa ISSN 1413-7739

Resumo

ARAUJO, Júlio Neves de; MARTINS, Agnaldo Silva  e  COSTA, Karla Gonçalves da. Age and growth of yellowtail snapper, Ocyururs chrysurus, from Central Coast of Brazil. Rev. Bras. Oceanogr. [online]. 2002, vol.50, n.unico, pp.47-57. ISSN 1413-7739.  http://dx.doi.org/10.1590/S1413-77392002000100004.

To age and study the growth of yellowtail snapper, we analyzed readings of otoliths obtained in monthly samplings from commercial landings in the cities of Vitória and Vila Velha, from 1998 to 1999. Marginal increment analysis showed that the formation of a translucent zone occurred in the early fall and during the winter. The observed ages range from 2 to 19 years. Mean back-calculated fork lengths (FL) range from 108 mm for age 1 to 524 mm for age 19. The Von Bertalanffy growth equation fitted to the mean back-calculated FL was FLt = 567,1 (1 - e -0.130 (t + 0.773)), The length-weight relationship was W= 2,68x10-5FL2.914, where W = whole weight in grams. Yellowtail snapper has a slow growth with annual growth increments in weight raising progressively to the maximum of 164 g between the 7 and 8 years. The yellowtail snapper has long lifespan and slow growth rates, features of species that are very sensitive to overfishing.

Palavras-chave : Age; Growth; Ocyurus chrysurus; Brazil.

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