Reproductive biology of Rhaphiodon vulpinus (Ostariophysi: Cynodontidae) in the Tocantins River Basin, Brazil

Reproductive biology of Rhaphiodon vulpinus (Ostariophysi: Cynodontidae) in the Tocantins River Basin, Brazil

In order to evaluate aspects of the reproductive biology of Rhaphiodon vulpinus in the Upper and Middle Tocantins River, samples were taken monthly from October, 1999 through September, 2001, by means of gill nets. Males, which were more abundant than females (chi2 146.87: df=1: p

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Veröffentlicht in:Neotropical Ichthyology 2007-12, Vol.5 (4), p.479-484
Hauptverfasser: Neuberger, Andréa L.(Universidade Federal do Tocantins Núcleo de Estudos Ambientais), Marques, Elineide E.(Universidade Federal do Tocantins Núcleo de Estudos Ambientais), Agostinho, Carlos S.(Universidade Federal do Tocantins Núcleo de Estudos Ambientais), Oliveira, Rafael J. de(Universidade Federal do Tocantins Núcleo de Estudos Ambientais)
Format: Artikel
Sprache:eng
Schlagworte:
Cynodontidae
Fecundity
First maturation
Ostariophysi
Reproduction
Rhaphiodon vulpinus
Sex ratio
ZOOLOGY
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Zusammenfassung:In order to evaluate aspects of the reproductive biology of Rhaphiodon vulpinus in the Upper and Middle Tocantins River, samples were taken monthly from October, 1999 through September, 2001, by means of gill nets. Males, which were more abundant than females (chi2 146.87: df=1: p
ISSN:1679-6225
1982-0224
1679-6225
1982-0224
DOI:10.1590/S1679-62252007000400007