The reproductive biology of Diplodus argenteus (Sparidae) in the coastal upwelling system of Cabo Frio, Rio de Janeiro, Brazil

The reproductive biology of the seabream Diplodus argenteus, a dominant coastal fishery species, was investigated over two consecutive seasons (2001-2002) at Cabo Frio, Brazil, a low-latitude upwelling system. The sex ratio was dominated by females (1.4:1.0) and the length-at-50% sexual maturity (fe...

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Bibliographic Details
Published inAfrican journal of marine science Vol. 27; no. 2; pp. 439 - 447
Main Authors David, G.S, Coutinho, R, Quagio-Grassiotto, I, Verani, J.R
Format Journal Article
LanguageEnglish
Published Taylor & Francis Group 01.10.2005
Subjects
BRASIL
BRAZIL
BRESIL
DIPLODUS
Diplodus argenteus
Marine
PERFORMANCE DE REPRODUCTION
REPRODUCTION
REPRODUCTIVE PERFORMANCE
REPRODUCTIVIDAD
SEABREAM
SPARIDAE
UPWELLING
ASW, Brazil, Rio de Janeiro, Cabo Frio
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Summary:The reproductive biology of the seabream Diplodus argenteus, a dominant coastal fishery species, was investigated over two consecutive seasons (2001-2002) at Cabo Frio, Brazil, a low-latitude upwelling system. The sex ratio was dominated by females (1.4:1.0) and the length-at-50% sexual maturity (females) was 203mm total length. Females were multiple spawners and the reproductive pattern appeared to be digynous protandrous hermaphroditism. Monthly variations in gonadosomatic index and proportion of ripe females indicated that reproductive activity occurred from late winter to summer (August-February), following coastal upwelling.
Bibliography:ZA
L53
ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
ISSN:1814-232X
1814-2338
DOI:10.2989/18142320509504102