Estimation of the mean lenght at first sexual maturation for Anchoviella lepidentostole Fowler, 1911 (Osteichthyes, Engraulidae), from Registro, São Paulo, State, Brazil / ESTIMATIVA DO COMPRIMENTO MÉDIO NA PRIMEIRA MATURAÇÃO SEXUAL DA MANJUBA Anchoviella lepidentostole FOWLER, 1911) (OSTEICHTHYES, ENGRAULIDAE), EM REGISTRO (SP)

ABSTRACT

By studying 4,479 exemplaries of Anchoviella lepidentostole (Fowler, 1911) from Registro, São Paulo State, Brazil, from July 1978 through December 1980, the first sexual maturation length was determined both for male and female individuaIs, being 88 and 94 mm respectivelly. Sexual dimorphism was observed as far as the body length is concerned the frequency of males is higher within 105 to 107 mm body length range and the frequency of females is higher within the 123 to 125 mm range.

RESUMO

Através do estudo de 4479 exemplares de Anchoviella lepidentostole (Fowler, 1911), realizado em Registro (SP), foi estimado o comprimento da primeira maturação sexual para machos e fêmeas, sendo respectivamente 88 e 94 mm. Notou-se haver dimorfismo sexual quanto ao comprimento, apresentando maior frequência de machos na faixa de 105 a 107 mm e de fêmeas na de 123 a 125 mm.