Aspectos da reprodução do peixe-porco, Balistes capriscus (Gmelin) (Actinopterygii, Tetraodontiformes, Balistidae) coletado na costa sul do Estado de São Paulo, Brasil

Abstract

The monthly analysis of maturity stage ti'equency suggested that spawning ofthe grey triggerfish Balisles capriscus (Gmelin, 1788) is annual, total and occurs from Novemberto FebrualY in the south ofS o Paulo State, Brazil. Size at firsl .Illaturity is 169 mm for temales and 200 mm for males. Condition factor estimated cOllsidering and disconsidering gonad weight (K and K') showed maximum values relatcd to periods ofhigher frequency offemales at advanced maturity stage. K was higher in December, JanualY and FebrualY, and was relaled to the maximulll frequency of mature females. As K estimates lhe gonad condition it could be used as a Illaturity and breeding season index for this species. The gonadosomatic relation behaved lhe sallle as K values.