Stock assessment and fishery management of the pink shrimp Farfantepenaeus brasiliensis Latreille, 1970 and F. paulensis Pérez-Farfante, 1967 in Southeastern Brazil (23° to 28° S)

Abstract

Quantitative analyses of the pink shrimp (Farfantepenaeus brasiliensis and Farfantepenaeus paulensis) fisheries were carried out using data collected from July 1999 to July 2001 from the trawling operations of the fishing fleet based in Santos/Guarujá, SP. According to classical models, the fishery is at its maximum sustainable yield. Therefore, reduction of the fishing effort and adequate season and area closures seem to be the best management actions for the pink shrimp fishery.

Catch variability and growth of pink shrimp (Farfantepenaeus paulensis) in two coastal lagoons of uruguay and their relationship with ENSO events

“…The shrimp seasons occur during autumn and showed similar growth parameters as in neighbouring lagoons of southern Brazil. The k value greater than the calculated by LEITE and PETRERE (2006) and this may be explained by higher productivity of the Uruguayan lagoons. Our data, and the maximum length found in Uruguay, indicate that in most years F. paulensis enters to coastal lagoons of Uruguay in the spring as post-larvae, reaches in these ecosystems total lengths between 100 mm and 165 mm in a period of about 5-7 months, and then begin their return to the sea.…”

“…When temperatures and salinity begin to decrease in autumn, the individuals start their migration to the reproduction grounds and leave the lagoons (D' INCAO, 1991; SANTANA andFABIANO, 1999); at this moment the fishery begins its activity throughout the autumn (March to May). presents great variability in recruitment, in which factors such as temperature, salinity, rainfall contribution and food availability (LEITE and PETRERE, 2006) and the influence of climate variability known as ENSO events, generate variations in the abundances of the species in its various habitats (MÖLLER et al, 2009; PEREIRA andD'INCAO, 2013). These variations are enhanced by the fishery of juveniles in coastal lagoons by small scale fisheries in Brazil and Uruguay (VALENTINI et al, 1991; FABIANO and SANTANA, 1999; D'INCAO, 2002; MÖLLER et al, 2009) and adults fisheries in the ocean by the Brazilian industrial fleet (VALENTINI et al, 1991;D'INCAO et al, 2002; LEITE andPETRERE, 2006).…”

Extracted and farmed shrimp fisheries in Brazil: economic, environmental and social consequences of exploitation

“…According to the Brazilian Environmental Agency (IBAMA), 400 trawlers are officially permitted to exploit pink shrimp in the southern and southeastern coast, most of them concentrated in the Sao Paulo state (Leite and Petrere 2006). Only 100 are able to practice oceanic fishery, operating in all the EEZ.…”

“…obs.). Data on fishing efforts for pink shrimp in the southeast and south region can be found in D' Incao et al (2002), Leite and Petrere (2006), and Valentini et al (1991). Native white shrimp (Penaeus schimitti) is also exploited, although not intensively, for both industrial and small-scale fisheries, and is usually a secondary product of the sea bob shrimp fishery.…”

“…Due to high market demands of developed countries, such industry spread quickly around the intertropical zone, without ecological concerns about exploitation levels. This behavior resulted in overfishing of different species in diverse places (Leite and Petrere 2006). Small-scale shrimp fisheries were present in such places long beforehand.…”