Use of Copepod Nauplii During Early Feeding Stage of Grouper <i>Epinephelus coioides</i>
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- Toledo Joebert D.
- Aquaculture Department, Southeast Asian Fisheries Development Center
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- Golez Ma. Salvacion
- Tokyo University of Fisheries
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- Doi Masanori
- Aquaculture Department, Southeast Asian Fisheries Development Center
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- Ohno Atsushi
- Tokyo University of Fisheries
Bibliographic Information
- Other Title
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- Use of Copepod Nauplii During Early Feeding Stage of Grouper Epinephelus coioides
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Abstract
Newly-hatched Epinephelus coioides larvae were stocked in five 5-ton tanks at an initial density of 25, 000 ind/tank. Copepod nauplii were propagated in four of these tanks by inoculating various densities (20 to 80 ind/ι) of mixed copepodids of Acartia tsuensis, Pseudodiaptomus spp., and Oithona sp. three days before stocking larvae. Rotifers were added in these tanks on Day 7 at an initial density of 5, 000 ind/ι. Larvae in the remaining tank were fed rotifers (only) starting Day 2 at 5, 000 ind/ι. The feeding incidence, gut content, growth, and survival of larvae were better in tanks with higher density of copepodids (60-80 ind/ι). These indices were lowest in larvae given rotifers only. Total n-3 HUFA of copepods was 2 to 3 times higher than rotifers. High percentages of 22:6n-3 (DHA) were detected in the fatty acid composition of Pseudodiaptomus (13%) and Acartia (24%) with DHA/EPA (20:5n-3) values of 1.4 and 2.6, respectively. By providing nauplii of copepods at the early feeding stage, an average survival of 3.4% at harvest (Day 36) was obtained in a pilot scale grouper seed production trial in three 10-ton tanks.
Journal
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- Fisheries science
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Fisheries science 65 (3), 390-397, 1999
The Japanese Society of Fisheries Science
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Details 詳細情報について
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- CRID
- 1390282679405540352
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- NII Article ID
- 130003903370
- 10004878933
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- NII Book ID
- AA10993718
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- COI
- 1:CAS:528:DyaK1MXktlCmtrY%3D
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- NDL BIB ID
- 4767358
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- ISSN
- 09199268
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- Text Lang
- en
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed