Population structure of Metynnis cf. roosevelti Eigenmann, 1915 (Characidae, Myleinae) FROM REDONDA Lagoon, Ní­­zia Floresta, Rio Grande do Norte í  Brazil

Authors

  • Hélio de Castro Bezerra GURGEL Professora adjunto do Departamento de Botí­¢nica :Ecologia e Zoologia da Universidade Federal do Rio Grande do Norte

Keywords:

fish, Metynnis cf. roosevelti, sex-ratio, estructure in length, weight/length relation

Abstract

The present work deals with the populational structure of Metynnis cf. roosevelti Eigenmann, 1915 from Redonda Lagoon (Ní­­zia Floresta - RN). The collecting period runs from April, 1987 to March, 1988. In this period, 2138 specimens were caught and analyzed. When observed, the total number of the individuals exhibited proportional sex-ratio. Males predominated significantly only in April, in April/May, and when estimated some length age classes. Specimens with a total length inferior to 2.0 and superior to 11.5 cm were not caught; females reached greater length than males. The weight/length relationship was estimated and no significant difference between males and females was observed.

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Published

2018-09-13

Issue

Vol. 22 No. 1 (1995): BOLETIM DO INSTITUTO DE PESCA

Section

Scientific Article