Growth and mortalities of the pink-shrimp Farfantepenaeus brasiliensis Latreille, 1970 and F. paulensis Pérez-Farfante 1967 in Southeast Brazil

from 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.