Biologia reprodutiva da baúna de fogo Lutjanus alexandrei (Moura & Lindeman, 2007) capturada na costa Norte do Estado de Pernambuco

Abstract

The study presents information about the reproductive characteristics of baúna de fogo Lutjanus alexandrei. Ware obtained 540 samples of this species in north coast of Pernambuco state from 2004 to 2006. Ware realized 250 (150 females and 100 males) histological cuts and observations of the presents oocytes and spermatogonias, analyzed with microscopy to determine the stage of gonadal development. For females and males ware determined 5 maturational stages: immature, maturation, matures, spawned/ejaculating and resting. The standard length of the samples varied from 130 to 283 mm, and the sexual ratio was 1.6:1(male:female). A relation of Gonadosomatic Index associated with advanced maturation ware found in a long pulse from October to November, with points in November and February. The L50 for females was 147,2 mm SL and 147,8 mm SL for males. The spawning was in portions with assinchronic development of oocytes. The estimate fecundity through hidratated oocytes counting varied from 33.990 to 323.738 oocytes.