Biological aspects of the Sailfin dory Zenopsis conchifer (Lowe, 1852) caught by deep-sea trawling fishery off southern Brazil
Contribuinte(s) |
UNIVERSIDADE DE SÃO PAULO |
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Data(s) |
04/11/2013
04/11/2013
2012
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Resumo |
Biological aspects of sailfin dory, Zenopsis conchifer, were studied from 839 individuals obtained from deep-sea commercial bottom trawling off southern Brazil at depths up to 526 m in 2002 and 2003. Samples included fish from 101 mm Lt and 15 g up to 640 mm Lt and 2,9 g. The sex-ratio was 50% at 150 mm Lt and between 300-350 mm Lt, with females outnumbering males in the remaining size classes. Reproductive activity seems to peak between July and August (austral winter). Size at attainment of 50% maturity (Lt50) was 311 mm Lt in females. The mean length and maturity of the specimens increased with depth, suggesting that larger fish concentrate in deeper waters. |
Identificador |
Braz. j. oceanogr.,v.60,n.2,p.171-179,2012 1679-8759 http://www.producao.usp.br/handle/BDPI/40241 10.1590/S1679-87592012000200007 http://www.scielo.br/scielo.php?script=sci_pdf&pid=S1679-87592012000200007&lng=en&nrm=iso&tlng=en |
Idioma(s) |
eng |
Publicador |
Universidade de São Paulo, Instituto Oceanográfico |
Relação |
Brazilian Journal of Oceanography |
Direitos |
openAccess |
Palavras-Chave | #Zeidae #size structure #sex ratio #maturity #bathymetry #southern Brazil #Zeidae #estrutura de tamanhos #proporção sexual #maturidade #batimetria #sul do Brasil |
Tipo |
article original article |