Indicadores do desenvolvimento gonadal e nutricional de Prochilodus cearensis (Steindachner, 1911) (Characiformes, Prochilodontidae) no açude Itans/Caicó, Rio Grande do Norte, Brasil - DOI: 10.4025/actascibiolsci.v25i2.2027

Sandra Amaral de Araujo; Helio de Castro Bezerra Gurgel; Renata Swany Soares Nascimento

doi:10.4025/actascibiolsci.v25i2.2027

Gonadal and nutritional indexes influencing the reproductive behavior of Prochilodus cearensis (Steindachner, 1911) (Characiformes, Prochilodontidae) in Itans water reservoir, Caicó, Rio Grande do N - DOI: 10.4025/actascibiolsci.v25i2.2027

Sandra Amaral de Araujo UNP
Helio de Castro Bezerra Gurgel UFRGN
Renata Swany Soares Nascimento UNP

DOI: https://doi.org/10.4025/actascibiolsci.v25i2.2027

Abstract

The aim of this study was to investigate the influence of gonadal and nutritional index on reproductive behavior of Prochilodus cearensis (Steindachner, 1911) (Characiformes, Prochilodontidae) in Itans water reservoir, Caicó, Rio Grande do Norte. 213 animals were used (160 females and 53 males) and collected from Itans water reservoir during the period from April 1996 to January 1997. The highest Gonadossomatic and Gonadal Index values were obtained for females and males from December to February. The repletion index was similar for males and females. The condition factor (ø) showed the highest value just before reproduction. Data collected suggest that reproductive cycle in this species is not directly related to abiotic factors

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Author Biography

Helio de Castro Bezerra Gurgel, UFRGN

possui graduação em Ciências Biológicas pela Universidade Federal do Rio Grande do Norte (1975), mestrado em Zoologia pela Universidade Federal do Paraná (1979) e doutorado em Ecologia e Recursos Naturais pela Universidade Federal de São Carlos (1992). Atualmente é professor adjunto iv da Universidade Federal do Rio Grande do Norte. Tem experiência na área de Zoologia, com ênfase em Ictiologia, atuando principalmente nos seguintes temas: peixe, rio ceara-mirim, estrutura populacional, reprodução e alimentação Currículo Lattes

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Published

2008-04-17

How to Cite

Araujo, S. A. de, Gurgel, H. de C. B., & Nascimento, R. S. S. (2008). Gonadal and nutritional indexes influencing the reproductive behavior of Prochilodus cearensis (Steindachner, 1911) (Characiformes, Prochilodontidae) in Itans water reservoir, Caicó, Rio Grande do N - DOI: 10.4025/actascibiolsci.v25i2.2027. Acta Scientiarum. Biological Sciences, 25(2), 377-384. https://doi.org/10.4025/actascibiolsci.v25i2.2027

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Issue

Vol 25 No 2 (2003)

Section

Biology Sciences

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