Aspectos da biologia pesqueira em fêmeas de Cathrops spixii do estuário do rio Potengi, Natal/RN, com ênfase nos índices biométricos

Hélio de Castro Bezerra Gurgel; Cristiano Queiroz de Albuquerque; Djair dos Santos de Lima e Souza; Geraldo Barbieri

doi:10.4025/actascibiolsci.v22i0.2938

Biological aspects in Cathrops spixii females from Potengi river, Natal, RN, with emphasis on biometric indexes

Authors

Hélio de Castro Bezerra Gurgel UFRN Author
Cristiano Queiroz de Albuquerque UFRN Author
Djair dos Santos de Lima e Souza UFRN Author
Geraldo Barbieri Instituto de Pesca-São Paulo Author

DOI:

https://doi.org/10.4025/actascibiolsci.v22i0.2938

Keywords:

Peixe, índices, reprodução, alimentação, rio Potengi

Abstract

This study describes the analysis of bimestral mean variations of repletion index, replection mean grade and condition factor of 445 females of Cathrops spixii, from Potengi river, Natal/RN, Brazil, captured between March, 1997 and February, 1998. The liver weight variation found is related to the transference of the energetic reserve necessary to the vitellogenesis process. The gonadosomatic index is a good indicative of the reproduction period. The condition factor, the repletion index and repletion mean grade indicate the time when fish are in their best feeding condition

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Author Biography

Hélio de Castro Bezerra Gurgel, UFRN

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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PDF (Portuguese)

Published

2008-05-09

Issue

Vol. 22 (2000)

Section

Biology Sciences

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How to Cite

Biological aspects in Cathrops spixii females from Potengi river, Natal, RN, with emphasis on biometric indexes. (2008). Acta Scientiarum. Biological Sciences, 22, 503-505. https://doi.org/10.4025/actascibiolsci.v22i0.2938