Avaliação da situação dos estoques de camarões capturados comercialmente no nordeste do Brasil com métodos para dados limitados

Abstract

The aim of this study was to evaluate the stocks situation of the most penaeidae species catched and propose management measures for Northeast region stocks. For this, available data about catch and growth were analyzed for these species. First of all, the overall catch was analyzed over the years and state of the fisheries assessed using data poor models. The results showed that Northeast shrimp fishing growing over the years and about caught species, pink shrimp (Penaeus Subtilis) have a first catch length around Lc = 9 cm, giving yield per recruit of Y/R = 1,08 g, fishing mortality Fmsy = 4,9, with catches below first maturation length (L50), giving a Maximum Sustainable Yield around 532 t. For sea-bob shrimp (Xiphopenaeus Kroery) which is more abundant than others, was observed with Lc = 8 cm, a Y/R= 0,16 g, Fmsy=12, being catched above first maturation length (L50), showing Maximum Sustainable Yield around 7525 t. For white shrimp (Penaeus Schimitt) Lc = 10 cm, Y/R = 1,30 g, Fmsy = 6,2, with catches below the L50 and an estimated Maximum Sustainable Yield around 3300 t. In general, these fisheries are carried out without catch quotas, below first maturation length (L50) and high fishing mortality coefficients, but according to F and Lc combinations there have been no signs of declining yields or overfishing. Knowledge about maximum sustainable yield and yield per recruit can be useful for management decisions about these resources.