Data/hora: 01/06/2024 01:27:26

Provedor de dados: | 76
País: | Brazil
Título: | Ciclo de vida pós-marsupial e crescimento de Metamysidopsis elongata atlantica (Crustacea, Mysidacea, Mysidae) em cultivo de laboratório
Autores: | Gama,Andréa Mara da Silva; Montú,Mônica Adelina; Gusmão,Luiz Felipe M. de.
Data: | 2002-03-01
Ano: | 2002
Palavras-chave: | Crustacea; Mysidae; Metamysidopsis; Growth; Molts.
Resumo: | Metamysidopsis elongata atlantica (Bacescu, 1968) was reared in the laboratory for 45 days at 20±1°C and salinity of 30ppt. Growth curves (von Bertalanffy model) were calculated for both sexes and for each sex. The daily rate of carapace growth was significantly different between females and males (F test, p &lt;0.05). Before the sexual maturity (14 days), the growth rate of females was higher than that of males (females, 0.0457 mm day-1; males, 0.0448 mm day-1). After the maturity (15 to 45 days), these rates decreased similarly for both sexes (females, 0.0203 mm day-1; males, 0.0174mm day-1). The average growth rate was 0.0207mm day-1 over the 45 days. Twelve molts were observed in a period of 60 days. The first five molts occurred up to 14 days old (age of the sexual differentiation), with a mean intermolt period of 2.9 days. From the 6th molt it increased to 5.6 days. The results suggest that the use of the carapace length is a good measure to calculate the growth and longevity of the organisms.
Tipo: | Info:eu-repo/semantics/article
Idioma: | Português
Identificador: | http://www.scielo.br/scielo.php?script=sci_arttext&pid=S0073-47212002000100006
Editor: | Museu de Ciências Naturais
Relação: | 10.1590/S0073-47212002000100006
Formato: | text/html
Fonte: | Iheringia. Série Zoologia  v.92 n.1 2002
Fonte: | info:eu-repo/semantics/openAccess