Moulting cycle and growth rate of Metamysidopsis elongata atlantica (Crustacea, Mysidacea) reared at different temperatures and salinities

Submitted by Thainã Moraes (thainabm79@hotmail.com) on 2012-11-14T19:03:51Z No. of bitstreams: 1 Ciclo de mudas e taxas de crescimento de Metamysidopsis elongata.pdf: 179442 bytes, checksum: 142d3832811acef03c142a548ca7f072 (MD5)Approved for entry into archive by Sabrina Andrade(sabrinabeatriz@ibest.com.br) on 2012-11-16T17:30:51Z (GMT) No. of bitstreams: 1 Ciclo de mudas e taxas de crescimento de Metamysidopsis elongata.pdf: 179442 bytes, checksum: 142d3832811acef03c142a548ca7f072 (MD5)Made available in DSpace on 2012-11-16T17:30:51Z (GMT). No. of bitstreams: 1 Ciclo de mudas e taxas de crescimento de Metamysidopsis elongata.pdf: 179442 bytes, checksum: 142d3832811acef03c142a548ca7f072 (MD5) Previous issue date: 2006Metamysidopsis elongata atlantica (Bascescu, 1968) foi cultivada em laboratório em diferentes combinações de temperatura (13, 20, and 25°C) e salinidade (25, 30, and 35 ) para estimar o período de intermuda e a taxa de crescimento da carapaça. A temperatura afetou o período de intermuda e a taxa de crescimento dos animais. Misidiáceos criados a 13°C tiveram maiores períodos de intermuda que aqueles cultivados a 20 and 25°C. Enquanto animais criados a 13°C tiveram maior longevidade, fêmeas não desenvolvem marsúpio quando cultivadas nesta temperatura. A taxa de crescimento estimada para misidáceos entre 0 a 14 dias (idade no início da maturidade) foi 0,02 mm/dia, 0,04 mm/dia, e 0,05 mm/dia para animais cultivados respectivamente a 13°C, 20°C e 25°C.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