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The Scientific World Journal
Volume 2012, Article ID 579051, 10 pages
http://dx.doi.org/10.1100/2012/579051
Research Article

Temporal Dynamics of Reproduction of the Neotropical Fish, Crenicichla menezesi (Perciformes: Cichlidae)

1Programa de Pós-Graduação em Psicobiologia, Departamento de Fisiologia, Centro de Biociências, Universidade Federal do Rio Grande do Norte (UFRN), Avenida Salgado Filho 3000, Lagoa Nova, 59.072-970 Natal, RN, Brazil
2Departamento de Oceanografia e Limnologia, Universidade Federal do Rio Grande do Norte (UFRN), Praia de Mãe Luíza, 59014-100 Natal, RN, Brazil

Received 26 April 2012; Accepted 14 May 2012

Academic Editors: T. Otoi and Q. Y. Sun

Copyright © 2012 Andréa Soares de Araújo et al. This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

Abstract

The reproductive biology and the gonadal development cycle of the Neotropical cichlid fish, Crenicichla menezesi, is described. This species exhibits sexual dimorphism only during the spawning season. First sexual maturity of females is attained earlier than the males. Both macroscopic and histological investigations of ovaries and testes revealed four stages of gonadal maturation. Mean batch fecundity of females was 372 ( ± 10,41) of mature oocytes. This species is a partial spawner, with an extended spawning period. Monthly values of GSI and the condition factor are negatively correlated during the gonadal development cycle of this species.