期刊
AQUACULTURE
卷 289, 期 1-2, 页码 181-184出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.aquaculture.2008.12.033
关键词
Maja brachydactyla; Survival; Growth; Post-settlement; Juvenile; Rearing system
资金
- Ministry of Science and Research
- JACUMAR
- INIA [RTA2005-00022-00-00]
The effect of an individual culture system on survival and growth of juvenile crab stages 1-8 of the majid crab Maja brachydactyla Balss, 1922 was studied using larvae obtained from adult individuals collected in the NE Atlantic. The juvenile stages were cultured individually from a megalopal stage using a semi-open recirculation system. Forty-eight percent of the megalopae moulted to first juvenile stage. Detailed growth data have been obtained for each juvenile stage. juvenile development up to juvenile crab stage 8 (C1-C8) at 20 degrees C lasted 117.5 +/- 7.5 days. Survival was high during the whole experiment: 43.75% of C1 survived to perform the moult to C8. Moult increment values (%CL) were similar in all the juvenile stages (27.90-37.04%). Intermoult duration (9.37 +/- 1.04 to 33.5 +/- 2.64 days) increased sharply from stage 6, and the specific growth rate (SGR) diminished due to the significant increase of the intermoult period. (C) 2009 Elsevier B.V. All rights reserved.
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