Estudo dos efeitos de novas estratégias de pesca sobre os parâmetros populacionais dos grandes bagres Barbado (Pinirampus pirinampu) e Jaú (Paulicea Luetkeni) em uma aproximação computacional

Abstract

In this work we presented, through computer simulations, the results of the effects of selective fishing over the growth biological parameters: length at first maturation, age at first maturation and annual growth rate, of two large catfish of the swampland region, the Barbado (Pinirampus pinirampu) and the Jaú (Palicea luetkeni) in different fishing scenarios. In order to do this, we performed computer simulations using the model proposed by Santos, Martins and Pompeu (2012), adapted to the growth biological parameters of the cited species, and estimated by Mateus and Penha (2007). In the fishing scenarios the capturing window, in which we established the minimum as well as the maximum capture size, was that which produced the best results over the cited growth parameters. These results suggest that we adopt adequate policies since, although there are scenarios more favorable to the growth parameters, they are not always favorable for capturing.