Ciclo de mudas e taxas de crescimento de Metamysidopsis elongata atlantica (Crustacea, Mysidacea) cultivado em diferentes temperaturas e salinidades

Abstract

Metamysidopsis elongata atlantica (Bascescu, 1968) was reared in the laboratory at different combinations of temperature (13, 20, and 25°C) and salinity (25, 30, and 35‰) to estimate the intermoult period and carapace growth rate. Temperature affected both intermoult period and growth rate of the animals. Mysids reared at 13°C had longer intermoult periods than those reared at 20 and 25°C. While animals reared at 13°C had the longest longevity, females did not develop marsupium when reared at this temperature. Growth rate estimated for mysids aged between 0 to 14 days (age at the onset of maturity) was 0.02 mm/day, 0.04 mm/ day, and 0.05 mm/day for animals reared at 13°C, 20°C, and 25°C, respectively.