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  • 03 SEAFDEC/AQD External Publications
  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
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  • Journal Articles, Conference Papers and Book Chapters by SEAFDEC Staff
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Seed production of mud crab Scylla serrata juveniles

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日付
2001
著者
Quinitio, E. T.
Parado-Estepa, F. D.
Millamena, O. M.
Rodriguez, E.
Borlongan, E.
Page views
2,960
主題
cannibalism ASFA
crab culture ASFA
crustacean larvae ASFA
Megalops ASFA
pond culture ASFA
rearing techniques ASFA
seed production ASFA
seeding (aquaculture) ASFA
survival ASFA
zoeae ASFA
Scylla serrata AGROVOC
Taxonomic term
Scylla serrata GBIF
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A protocol for the large-scale rearing of the mud crab Scylla serrata juveniles was developed based on the results of small-scale experiments on feeding and water management. This paper also reports the success in producing the second generation (F2) crabs.

Pond-reared adult S. serrata held in 10 m3 concrete tanks with sand substrates were given fish, mussel, annelids and formulated diet. The zoeae produced were stocked in 1.5 or 10 m3 tanks at 30 to 50 ind-l-1 and fed 10 to 15 Brachionus rotundiformis ml-1, 1 to 5 Artemia sauna nauplii ml-1 and 1.5 to 2.0 g shrimp larval commercial diet-m-3 day. Water was replaced daily at 30 to 50% of the total volume starting day 3. Megalops were nursed until crab stage either in tanks or in net cages installed in ponds. Crabs were fed mussel or small shrimps (Acetes sp).

Hatching occurred 6 to 12 days after spawning at 26.5 to 30.5°C. A female produced 0.42 to 5.23 x 106 zoeae at a time. Mean survival rate from zoea 1 to 3- to 5-day old megalopa was 2.6 ± 0.8% and 32.8 ± 4.8% from megalopa to crab stage. The development from zoea 1 to megalopa required 16 to 18 days. Cannibalism and luminescent bacteria were identified as the major causes of mortality. Highest mortality was observed during the metamorphosis from zoea 5 to megalopa and megalopa to crab 1. First crab stage was obtained 23 to 25 days after hatching. Sorting the crabs during the nursery period minimized cannibalism.

Completion of the cycle in captivity was attained in 1997 and 1999 when spawns from pond-reared crabs grew to become the second-generation broodstock. The results point to a minimum age of 7.5 to 9 months at which S. serrata hatched their eggs after rearing from zoea 1.
URI
http://hdl.handle.net/10862/1910
Suggested Citation
Quinitio, E. T., Parado-Estepa, F. D., Millamena, O. M., Rodriguez, E., & Borlongan, E. (2001). Seed production of mud crab Scylla serrata juveniles. Asian Fisheries Science, 14(2), 161-174. http://hdl.handle.net/10862/1910
Type
Article
ISSN
0116-6514
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  • Journal Articles [1156]

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