Biologia reprodutiva e desova induzida de duas espécies de bagres (Osteichthyes: Siluriformes) da bacia do rio São Francisco - DOI: 10.4025/actascibiolsci.v28i3.227

Edson Vieira Sampaio; Yoshimi Sato

doi:10.4025/actascibiolsci.v28i3.227

Reproductive biology and induced spawning of two catfish species (Osteichthyes: Siluriformes) from the São Francisco river basin - DOI: 10.4025/actascibiolsci.v28i3.227

Edson Vieira Sampaio Companhia de Desenvolvimento do Vale do São Francisco
Yoshimi Sato Companhia de Desenvolvimento do Vale do São Francisco

DOI: https://doi.org/10.4025/actascibiolsci.v28i3.227

Abstract

Rhamdia quelen and Pseudopimelodus charus are two catfish species that can reach more than 2 kg. The specimens received one dose of crude carp pituitary extract (CCPE) (2.5 mg kg^-1 for males and 6 mg kg^-1 for females). Oocyte extrusion was done after 12.2 and 12.3 hours after the CCPE injection in R. quelen and P. charus respectively, at water temperature of 26ºC. More than 75% of the females of both species presented a positive response to the treatment, with mean rates of oocytes fertilization above 75%. The oocytes of P. charus and R. quelen are spherical, opaque, demersal, non adherent and covered by a jelly coat. There were found a mean number of 1073 and 1128 oocytes per gram respectively and the larvae of the two species ecloded around 21h after oocyte fertilization at 24ºC.

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Author Biography

Edson Vieira Sampaio, Companhia de Desenvolvimento do Vale do São Francisco

Possui Graduação em Licenciatura em Ciências Biológicas pela Universidade Federal de São Carlos (1990), graduação em Bacharelado Em Ciências Biológicas pela Universidade Federal de São Carlos (1990), Mestrado em Ciências Ambientais pela Universidade de São Paulo (1996) e Doutorado em Ecologia e Recursos Naturais pela Universidade Federal de São Carlos (2002). Atualmente é Técnico em Desenvolvimento Regional da Companhia de Desenvolvimento dos Vales do São Francisco e do Parnaíba - CODEVASF. Tem experiência na área de Ecologia, com ênfase em Ecologia do Zooplâncton, atuando principalmente nos seguintes temas: Ecologia e Identificação do Zooplâncton Lacustre, Limnologia Geral e de Viveiros, Larvicultura e Alevinagem de Peixes Nativos da Bacia do São Francisco, Reprodução Artificial de Peixes Reofílicos, Ictiologia do Alto da Bacia do Rio São Francisco Currículo Lattes

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Published

2007-11-14

How to Cite

Sampaio, E. V., & Sato, Y. (2007). Reproductive biology and induced spawning of two catfish species (Osteichthyes: Siluriformes) from the São Francisco river basin - DOI: 10.4025/actascibiolsci.v28i3.227. Acta Scientiarum. Biological Sciences, 28(3), 263-268. https://doi.org/10.4025/actascibiolsci.v28i3.227

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Issue

Vol 28 No 3 (2006)

Section

Aquiculture and Fisheries Resources

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