No abstract

AbstrActfrom July, 1999 until July, 2001 data from the pink-shrimp Farfantepenaeus brasiliensis latreille, 1970 and F. paulensis Pérez-farfante, 1967 fishery were collected from trawling by the fishing fleet based in santos/Guarujá-sP. Growth and mortalities of these species were studied. F. brasiliensis and F. paulensis have longevity of 2 years and growth estimates of l∞ = 29.0 cm and k = 1.24 year -1 for F. brasiliensis and l∞ = 27.5 cm and k = 1.34 year -1 for F. paulensis. females reach bigger lengths than males in both species. natural mortalities (m) were 1.80 and 1.90 year -1 and fishing mortalities (f) were 4.7 and 6.8 year -1 for F. brasiliensis and F. paulensis, respectively. survival rates are s = 0.15% and 0.02% for F. brasiliensis and F. paulensis, respectively, which are usually low values for shrimps. Farafantepenaeus brasiliensis e F. paulensis são espécies de crescimento rápido e vida curta, com longevidade de 2 anos (l∞ = 29,0 cm e k = 1,24 ano -1 para F. brasiliensis; l∞ = 27,5 cm e k = 1,34 ano -1 para F. paulensis). As fêmeas atingem tamanhos maiores que os machos para ambas espécies. As mortalidades naturais foram estimadas em m = 1,80 ano -1 e 1,90 ano -1 e as mortalidades por pesca f = 4,7 ano -1 e 6,8 ano -1 para F. brasiliensis e F. paulensis, respectivamente. As taxas de sobrevivência foram calculadas em s = 0,15% para F. brasilensis e S = 0,02% para F. paulensis, valores usualmente baixos para camarões. KeywordsPalavras-chave: pescarias marinhas industriais tropicais, camarão-rosa, Farfantepenaeus, crescimento, mortalidades, Brasil. 524 leite Jr., n. o. and Petrere Jr., m.

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.