%0 Journal Article
%T Biological aspects of the Sailfin dory Zenopsis conchifer (Lowe, 1852) caught by deep-sea trawling fishery off southern Brazil
%A Rodrigo Silvestre Martins
%A Paulo Ricardo Schwingel
%J Brazilian Journal of Oceanography
%D 2012
%I Universidade de S?o Paulo
%R 10.1590/s1679-87592012000200007
%X 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. Aspectos biol¨®gicos do peixe-galo-de-profundidade, Zenopsis conchifer, foram estudados a partir de 839 peixes amostrados na pesca comercial de arrasto de profundidade (at¨¦ 526 m) no sul do Brasil entre 2002 e 2003. As amostras inclu¨ªram peixes entre 101 mm TL e 15 g at¨¦ 640 mm TL e 2.952 g. A propor  o sexual foi pr¨®xima ¨¤ paridade na classe de tamanho de 150 mm TL e entre 300-350 mm TL, sendo que as f¨ºmeas predominaram nas demais classes. A atividade reprodutiva apresentou um pico durante o inverno. O tamanho de primeira matura  o (TL50) nas f¨ºmeas foi de 311 mm TL. Os comprimentos corporais e a maturidade sexual aumentaram com a profundidade, sugerindo que os maiores exemplares se concentram ¨¢guas profundas.
%K Zeidae
%K estrutura de tamanhos
%K propor  o sexual
%K maturidade
%K batimetria
%K sul do Brasil
%K Zeidae
%K size structure
%K sex ratio
%K maturity
%K bathymetry
%K southern Brazil
%U http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-87592012000200007