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Preliminary studies on the rearing of the red-spotted grouper, Epinephelus coioides larvae using copepod nauplii as initial food

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Date
1996
Author
Toledo, Joebert D.
Golez, Salvacion N.
Doi, Masanori
Bravo, Roberto S.
Hara, Shiro
Page views
6,503
Subject
diet ASFA
fish culture ASFA
fish larvae ASFA
cultured organisms ASFA
nutritive value ASFA
rearing techniques ASFA
Epinephelus coioides AGROVOC
Taxonomic term
Epinephelus coioides GBIF
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Abstract
One day old red-spotted grouper (Epinephelus coioides) larvae from SEAFDEC, Iloilo, were packed at 3.300 ind/L and transported to Dagupan, Pangasinan for larval rearing. Transport time was about 10 hours. More than 90% of the larvae were active after transport. These were reared in two 7-on tanks (Tanks 1 and 2) using Acartia nauplii and rotifers as a initial food and in one 10-ton tank (Tank 3) provided with rotifers only. Feeding incidence at the onset of feeding (Day 3) was higher (90-95%) in Tanks 1 and 2 than in tank 3 (85%). All larvae sampled from days 4 – 10 in Tanks 1 and 2 had food in the gut while feeding incidence in Tank 3 was variable (75-100%). Larvae in Tanks 1 and 2 showed consistently higher food electivity for Acartia nauplii than rotifers. Higher survival rates were observed in Day 13 in tanks provided with copepod nauplii (16-18%) than with the rotifers only (2%). Average total length on Day 13 was higher in copepod-fed larvae (4.5 ± 0.5 mm) than larvae fed with rotifers only (3.0 ± 0.3mm). All larvae fed with rotifers alone died on Day 15. A total of 675 larvae were harvested on Day 45 from Tanks 1 and 2. These results indicate the feasibility of transporting one day old E. coioides larvae for at least 10 h and of using copepod nauplii as food for the first feeding E. coioides larvae.
URI
http://hdl.handle.net/10862/1574
Suggested Citation
Toledo, J. D., Golez, S. N., Doi, M., Bravo, R. S., & Hara, S. (1996). Preliminary studies on the rearing of the red-spotted grouper, Epinephelus coioides larvae using copepod nauplii as initial food. UPV Journal of Natural Sciences, 1(2), 119-129. http://hdl.handle.net/10862/1574
Type
Article
ISSN
0118-461X
Collections
  • Journal Articles [1160]

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