| Autor: |
de Araújo AS; Programa 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., do Nascimento WS, Yamamoto ME, Chellappa S |
| Jazyk: |
angličtina |
| Zdroj: |
TheScientificWorldJournal [ScientificWorldJournal] 2012; Vol. 2012, pp. 579051. Date of Electronic Publication: 2012 Aug 01. |
| DOI: |
10.1100/2012/579051 |
| Abstrakt: |
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. |
| Databáze: |
MEDLINE |
| Externí odkaz: |
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