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Growth and survival of grouper Epinephelus coioides (Hamilton) larvae fed free-living nematode Panagrellus redivivus at first feeding

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Date
2011
Author
Reyes, Ofelia S.
Duray, Marietta N.
Santiago, Corazon B.
Ricci, Manuele
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Abstract
The free-living nematode, Panagrellus redivivus, was tested as live food for grouper Epinephelus coioides larvae during the first feeding stage. A series of experiments were conducted to determine the acceptability of the free-living nematodes in grouper larvae at first feeding, the optimum nematode density and the response of the larvae to nutritionally enriched nematode. All experiments were conducted in 200-L conical tanks filled with 150-L filtered seawater and stocked at 15 larvae L−1. Duration of feeding experiments was up to day 21 (experiment 1) and 14 days (experiment 2 and 3). Brachionus plicatilis and Artemia (experiment 1) and Brachionus plicatilis alone (experiment 2 & 3) was used as the control treatment. Observations indicated that the grouper larvae readily fed on free-living nematodes as early as 3 days posthatching, the start of exogenous feeding. Optimum feeding density for the larvae was 75 nematodes ml−1. The enrichment of cod liver oil or sunflower oil influenced the total lipids and n-3 highly unsaturated fatty acids of P. redivivus, which in turn influenced those of the grouper larvae, however, growth and survival of the larvae were not affected (P > 0.05). The results from this investigation showed that the nematode, P. redivivus, can be used as first live food for grouper larvae from the onset of exogenous feeding until they could feed on Artemia nauplii.
URI
http://hdl.handle.net/10862/974
Suggested Citation
Reyes, O. S., Duray, M. N., Santiago, C. B., & Ricci, M. (2011). Growth and survival of grouper Epinephelus coioides (Hamilton) larvae fed free-living nematode Panagrellus redivivus at first feeding. Aquaculture International, 19(1), 155-164.
DOI
10.1007/s10499-010-9349-0
Subject
marine fish ASFA; live feeds ASFA; growth ASFA; marine invertebrates ASFA; fatty acids ASFA; survival ASFA; fish larvae ASFA; fish oils ASFA; fish culture ASFA; Panagrellus redivivus; Epinephelus coioides; Brachionus plicatilis; Nematoda; Helianthus; Artemia
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