On the gonadal maturation and growth curves of females of Saguiru prata (Stewdachnenna insculpta Fernandez-Yepez, 1948), in Ibitinga reservoir, São Paulo State, Brazil

Ricardo Amaro dos Santos; Jaime José Casari da Camara; Elmar Cardozo Campos; José Mandelli Junior

On the gonadal maturation and growth curves of females of Saguiru prata (Stewdachnenna insculpta Fernandez-Yepez, 1948), in Ibitinga reservoir, São Paulo State, Brazil | Curvas de maturação gonadal e crescimento de fêmeas de Saguiru prata, (Steindachnerina insculpra Fernandez - Yepez, 1948), capturadas na Represa de Ibitinga, Estado de São Paulo, Brasil

1991

Ricardo Amaro dos Santos | Jaime José Casari da Camara | Elmar Cardozo Campos | José Mandelli Junior

The purpose of this paper was to determine the average total length and the average age at which the first maturation period succeeds in the females of Steindachnenna insculpta caught in Ibitinga Reservoir, SãoPaulo State. The observed values from the maturation curve, adjusted to von Bertalanffy's equation, were the following ones: Loo = 143.5mm and K = 0.381. The first sexual maturation period was detected when they were three years old and 97.73 mm length.

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O objetivo deste trabalho foi determinar em que comprimento e idade ocorre a primeira maturação sexual de fêmeas de Saguiru prata Steindachnerinainsculpia, na Represa de Ibitinga (21046'S 48059'W). Os valores encontrados através da curva de maturação, ajustados pela equação de von Bertalanffy, foram: Loo= 143,5 mm e K = 0,381. A primeira maturação sexualdá-se com um comprimento total médio de 97,73 mm, aos 3 anos de idade.

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