CESIMAR - CENPAT   25625
CENTRO PARA EL ESTUDIO DE SISTEMAS MARINOS
Unidad Ejecutora - UE
artículos
Título:
Effects of temperature and salinity on the development and survival of the embryos and zoeae I from the southern surf crab Ovalipes trimaculatus (Brachyura: Portunidae)
Autor/es:
ANTONELA MARTELLI; PEDRO BARON
Revista:
ANAIS DA ACADEMIA BRASILEIRA DE CIENCIAS.
Editorial:
ACAD BRASILEIRA DE CIENCIAS
Referencias:
Lugar: Rio de Janeiro; Año: 2020
ISSN:
0001-3765
Resumen:
The effects of different thermo-haline conditions on the length of development and survival of embryos (6, 10, 13, 15, 18, 22, 24 ⁰C × 30, 33 ?; 13 ⁰C × 26, 30, 33, 37 ?) and zoeae I (13, 18, 22 ⁰C × 30, 33 ?; 13 ⁰C × 26, 30, 33, 37 ?) of the southern surf crab Ovalipes trimaculatus from Nuevo Gulf?s (Patagonia, Argentina) populations were tested in captivity. Mean length of embryogenesis decreased exponentially from 63 days to 19 days with increasing temperatures, but was not affected by water salinity. Mean embryonic survival was significantly lower at 24 ⁰C (30 and 33?) than at other thermo-haline treatments. Also, it differed between salinity conditions (30=33?>26 ?>37? at 13 ⁰C; 30=33? at 24 ⁰C). Both at 30 and 33?, the length of the Zoea I stage significantly varied between thermal treatments, being longer at 13⁰C. Survival of zoeae I did not show differences between combinations of 13, 18 and 22 ⁰C temperature × 30 and 33? salinity. However, no zoeae I reared at 13 ⁰C survived at 37? and mean survival at 26? halved that of 30-33?. These experimental results might be used in the design of aquaculture protocols.