Ingestion by Japanese Eel <I>Anguilla japonica</I> Larvae on Various Minute Zooplanktons
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- Stenly Wullur
- Faculty of Fisheries and Marine Science, Sam Ratulangi University
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- Yoshimatsu Takao
- Graduate School of Bioresources, Mie University
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- Tanaka Hideki
- National Research Institute of Aquaculture
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- Ohtani Masataka
- Hayashikane Sangyo Co., Ltd.
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- Sakakura Yoshitaka
- Graduate School of Fisheries Science and Environmental Studies, Nagasaki University
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- Kim Hee-Jin
- Graduate School of Fisheries Science and Environmental Studies, Nagasaki University
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- Hagiwara Atsushi
- Graduate School of Fisheries Science and Environmental Studies, Nagasaki University
Bibliographic Information
- Other Title
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- 微小動物プランクトンに対するウナギ仔魚の初期摂餌
- Ingestion by Japanese Eel Anguilla japonica Larvae on Various Minute Zooplanktons
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Abstract
We observed the feeding incidence of Japanese eel Anguilla japonica larvae of 6, 7, 8 and 14 days after hatching (DAH) using various minute zooplanktons such as rotifer (Proales similis, Synchaeta sp., Keratella sp., Brachionus rotundiformis, B. angularis) and nauplii of copepod Paracyclopina nana, and compared those results to slurry type diets (i.e., shark eggs for control) to evaluate the usability of these planktons as primary food source for the mass culture of eel larvae. Feeding incidence of the larvae on 6, 7 and 8 DAH was 26.7-100% for slurry type diet, 20-46.7% for Proales similis and 0-6.7% for Synchaeta sp. At 14 DAH, feeding incidence of the larvae on slurry type diet and Proales similis reached to 100%, followed by B. rotundiformis (53.3%), Synchaeta sp. (20%), Keratella sp. (13.3%), and B. angularis (6.7%). On this day, slurry type diet (68.9%), Proales similis (37.2%) and Synchaeta sp. (1.0%) were detected in mid-hindgut while the other ingested rotifers remained in foregut of the larvae. These results suggested the possibility of minute illoricate rotifer Proales similis as an initial food source for Japanese eel larvae among the employed zooplanktons.
Journal
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- Aquaculture Science
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Aquaculture Science 61 (4), 341-347, 2013
Japanese Society for Aquaculture Science
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Details 詳細情報について
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- CRID
- 1390001204720208512
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- NII Article ID
- 130005062527
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- NII Book ID
- AN00124667
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- ISSN
- 21850194
- 03714217
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- HANDLE
- 10069/34262
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- NDL BIB ID
- 025111928
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- Text Lang
- en
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- Data Source
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- JaLC
- IRDB
- NDL
- CiNii Articles
- KAKEN
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- Abstract License Flag
- Disallowed