イカナゴ仔魚の日周鉛直移動と摂餌リズム
書誌事項
- タイトル別名
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- Diel vertical migration and feeding rhythm of the larvae of the Japanese sand-eel Ammodytes personatus.
- イカナゴ仔魚の日周鉛直移動と摂餌リズム〔英文〕
- イカナゴ シギョ ノ ニッシュウ エンチョク イドウ ト セツジ リズム エイ
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The diel vertical movement and feeding rhythm of the larvae of the Japanese sand-eel Ammodytes personatus were examined from the data of 7-8 series of MTD net tows taken through one day-night cycle on 3 cruises in February and March 1981 and March 1982.<br>MTD net samples demonstrated a size-related diel change in the vertical distribution of sandeel larvae. Larvae less than 5mm in standard length (SL) didn't demonstrate diel vertical migration, but migration became evident in larvae 5-6mm in SL. They exhibited a pattern of vertical migration that was inverse to that commonly observed in other fish. Larvae were remarkably concentrated in 5- and 15-m tows during the day and were mainly caught in 30- and 50-m tows at night. Ascent and descent occurred at dawn and dusk, respectively. The range of diel migration increased with the size of the larvae. The diel changes in fullness of gut in both fieldcollected and reared larvae and the time to empty the gut in the laboratory indicated diurnal feeding activity. The advantage of this unusual pattern of migration is discussed from the point of view of feeding and predator avoidance.
収録刊行物
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- 日本水産学会誌
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日本水産学会誌 51 (1), 1-5, 1985
公益社団法人 日本水産学会
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詳細情報
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- CRID
- 1390001206413385216
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- NII論文ID
- 130001543409
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- NII書誌ID
- AN00193422
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- ISSN
- 1349998X
- 00215392
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- NDL書誌ID
- 3023707
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- 本文言語コード
- en
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- データソース種別
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- JaLC
- IRDB
- NDL
- Crossref
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可