Sabiia Seb
        Busca avançada

Botão Atualizar

Botão Atualizar

Registro completo
Provedor de dados:  ArchiMer
País:  France
Título:  Validation of age determination using otoliths of the European anchovy (Engraulis encrasicolus L.) in the Bay of Biscay
Autores:  Uriarte, A.
Rico, I.
Villamor, B.
Duhamel, Erwan
Duenas, C.
Aldanondo, N.
Cotano, U.
Data:  2016
Ano:  2016
Palavras-chave:  Age estimation
Otolith formation.
Resumo:  Validation of the age determination procedure using otoliths of European anchovy in the Bay of Biscay was achieved by monitoring very strong year-classes in successive spring catches and surveys, as well as the seasonal occurrence of edge types. Historical corroboration of the ageing method was obtained by cross-correlation between successive age groups by year-classes in catches and surveys (1987–2013). Summary annual growth in length is also presented. Yearly annuli consist of a hyaline zone (either single or composite) and a wide opaque zone, disrupted occasionally by some typical checks (mainly at age-0 and age-1 at peak spawning time). Age determination, given a date of capture, requires knowledge of the typical annual growth pattern of otoliths, their seasonal edge formation by ages and the most typical checks. Most opaque growth occurs in summer and is minimal (translucent) in winter. Opaque zone formation begins earlier in younger fish (in spring), and this helps distinguish age-1 from age-2+.
Tipo:  Text
Idioma:  Inglês

Editor:  CSIRO Publishing
Formato:  application/pdf
Fonte:  Marine and Freshwater Research (1323-1650) (CSIRO Publishing), 2016 , Vol. 67 , N. 7 , P. 951-966
Direitos:  CSIRO 2016 Open Access


restricted use

Empresa Brasileira de Pesquisa Agropecuária - Embrapa
Todos os direitos reservados, conforme Lei n° 9.610
Política de Privacidade
Área restrita

Parque Estação Biológica - PqEB s/n°
Brasília, DF - Brasil - CEP 70770-901
Fone: (61) 3448-4433 - Fax: (61) 3448-4890 / 3448-4891 SAC:

Valid HTML 4.01 Transitional