Curva de maturação gonadal e crescimento de fêmeas de pirambeba, Serrasalmus spilopleura Kner, 1859 (Pisces, Cypriniformes)

Abstract

The purpose of this paper is to determine the average total length and the average age at which the first maturation period succeeds in the females of Serrasalmus spilopleura,the Brazilian freshwater fish Pirambeba". The observed values from the maturation curve, adjusted by the von Bertalanffy's equation, were the following ones:

L CXl = 30.71 em and K = 0.256.

It was also noticed that the females of the above referred species attain the first sexual maturation period when they were three years old and 16.48 cm length.