Data/hora: 11/06/2024 01:33:11

Provedor de dados: | 83
País: | Brazil
Título: | Reproduction of the Brazilian snapper, Lutjanus alexandrei Moura &amp;amp; Lindeman, 2007 (Perciformes: Lutjanidae), off the northern coast of Pernambuco, Brazil
Autores: | Fernandes,Cezar A. F.; Oliveira,Paulo G. V. de; Travassos,Paulo E. P.; Hazin,Fábio H. V.
Data: | 2012-09-01
Ano: | 2012
Palavras-chave: | Multiple spawning; Oocytes; Sexual maturity; Spermatogenic cells.
Resumo: | Reproductive aspects of the Brazilian snapper Lutjanus alexandrei, were characterized, including a description of the development of oocytes and spermatogenic cells, size at first sexual maturity, and fecundity. A total of 540 fish were analyzed with 250 having their gonads sectioned to allow microscopic evaluation. Six maturity stages were identified for females and males: immature, maturing, mature, spawning, spawned, and resting. Fish standard length (SL) varied from 13.0 to 28.3 cm and sex ratio was 1.6 males: 1.0 females. Monthly distributions of mean Gonadosomatic Index (GSI) and maturity stages suggest that spawning occurs mainly in a protracted period, during the warmer months, from November to March. The size of first sexual maturity was estimated at 17.1 cm SL for females and 16.8 cm SL for males. Oocyte development suggests that L. alexandrei exhibits a multiple batch spawning behavior and batch fecundity varied from 34,000 to 324,000 oocytes.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Inglês
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252012000300012
Editor: | Sociedade Brasileira de Ictiologia
Relação: | 10.1590/S1679-62252012005000022
Formato: | text/html
Fonte: | Neotropical Ichthyology  v.10 n.3 2012
Fonte: | info:eu-repo/semantics/openAccess