Dinâmica da reprodução e da nutrição de Salminus maxillosus Valenciennes, 1849 (Pisces, Characidae) do rio Mogi Guaçu, Estado de São Paulo, Brasil

Geraldo Barbieri; Fernando André Salles; Marcos Antonio Cestarolli

doi:10.4025/actascibiolsci.v23i0.2698

Reproductive and nutritional dynamics of Salminus maxillosus Valenciennes, 1849 (Pisces, Characidae) at Mogi Guaçu river, state of São Paulo, Brazil

Authors

Geraldo Barbieri Instituto de Pesca Author
Fernando André Salles Instituto de Pesca Author
Marcos Antonio Cestarolli Instituto de Pesca Author

DOI:

https://doi.org/10.4025/actascibiolsci.v23i0.2698

Keywords:

reprodução, nutrição, Salminus, rio

Abstract

The reproductive and nutritional dynamics of Salminus maxillosus Val. were studied in 327 specimens (195 females and 132 males) collected in the Mogi Guaçu river, São Paulo, Brazil from August, 1996 to July, 1997. Reproductive dynamics were assessed through analysis of monthly variation in gonadosomatic index, hepatosomatic index, relative frequencies of gonadal maturity stages and first sexual maturation size. Reproduction occurred from November to January (the highest values recorded in December),when the highest water temperatures and pluviometric index were observed. The size of S. maxillosus at first sexual maturation (Lpm) was calculated to be 346.7 mm (males) and 447.4 mm (females), the age being two years for both males and females. The L₁₀₀ values calculated were 525.0 mm for males and 625.0 mm for females, respectively. The nutritional dynamics were estimated through analysis of the monthly variation and the relative frequency of the repletion stages. S. maxillosus from Mogi Guaçu River is in its optimum feeding condition before and during the reproductive season

Downloads

Download data is not yet available.

Author Biography

Geraldo Barbieri, Instituto de Pesca

Possui graduação em História Natural pela Universidade Estadual Paulista Júlio de Mesquita Filho (1966) , mestrado em Ciências Biológicas (Zoologia) pela Universidade de São Paulo (1974) e doutorado em Ciências Biológicas (Zoologia) pela Universidade de São Paulo (1976) . Tem experiência na área de Recursos Pesqueiros e Engenharia de Pesca , com ênfase em Recursos Pesqueiros de Ãguas Interiores. Atuando principalmente nos seguintes temas: Crescimento, Crescimento Relativo, Geophagus Brasiliensis, Pisces, População Peixe e Represa. Currículo Lattes

Downloads

PDF (Portuguese)

Published

2008-05-09

Issue

Vol. 23 (2001)

Section

Biology Sciences

License

DECLARATION OF ORIGINALITY AND COPYRIGHTS

I Declare that current article is original and has not been submitted for publication, in part or in whole, to any other national or international journal.

The copyrights belong exclusively to the authors. Published content is licensed under Creative Commons Attribution 4.0 (CC BY 4.0) guidelines, which allows sharing (copy and distribution of the material in any medium or format) and adaptation (remix, transform, and build upon the material) for any purpose, even commercially, under the terms of attribution.

Read this link for further information on how to use CC BY 4.0 properly.

How to Cite

Reproductive and nutritional dynamics of Salminus maxillosus Valenciennes, 1849 (Pisces, Characidae) at Mogi Guaçu river, state of São Paulo, Brazil. (2008). Acta Scientiarum. Biological Sciences, 23, 441-444. https://doi.org/10.4025/actascibiolsci.v23i0.2698