Período reprodutivo de fêmeas de Hypostomus commersoni Valenciennes, 1836, em uma barragem na bacia do rio Uruguai

Reproductive period of female Hypostomus commersoni Valenciennes, 1836, in a dam reservoir in the Pampa Brazilian. Hypostomus commersoni belongs to the family Loricariidae and is native to the Uruguay River Basin. It is commonly found in lentic environments, and their biology is poorly known in the Pampa regions of Brazil. The reproductive period was determined by analysis of the gonadosomatic index (GSI), hepatosomatic