北海道津軽海峡沿岸におけるマコガレイ稚魚によるハルパクチクス目の捕食
書誌事項
- タイトル別名
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- Feeding on Harpacticoid Copepods by Marbled Sole Pleuronectes yokohamae Juveniles in the Coastal Ares of Tsuguru Strait, Hokkaido.
- ホッカイドウ ツガル カイキョウ エンガン ニ オケル マコガレイ チギョ ニ ヨル ハルパクチクスモク ノ ホショク
この論文をさがす
説明
Monthly changes in the main food items of and biased feeding on adult males of harpacticoid copepods by marbled sole Pleuronectes yokohamae juveniles were examined in the Coastal Area of Tsugaru Strait, Hokkaido, from April to September 1996 and in May 1997. At Iwabe Fishing Port in May-July 1996 and May 1997, marbled sole juveniles (≤30mm in SL) fed on harpacticoid copepods, mainly Harpacticus sp. Off Nanaehama Beach in May 1997, juveniles preyed on harpacticoids, mainly Halectinosoma sp. In August, the main food organisms of juveniles (>30mm in SL) changed from harpacticoids to small benthic crustaceans and polychaetes. In September 1996, juveniles fed chiefly on polychaetes. Adult males of Harpacticus sp. and Halectinosoma sp. were found in significantly larger numbers than adult females and copepodites (stage I-V) in fish stomachs. In contrast, no significant difference was found in the sex ratio of Harpacticus sp. on the bottom sediment at Iwabe. Because adult female harpacticoids in the stomachs of juveniles had larger body widths than adult males and copepodites, the biased feeding on adult males can not be explained by differences in prey size. The specific feeding by marbled sole juveniles might have been caused by a behavioral difference between harpacticoid males and females in their breeding season.
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 66 (5), 818-824, 2000
公益社団法人 日本水産学会
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詳細情報 詳細情報について
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- CRID
- 1390001206412408192
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- NII論文ID
- 110003145104
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- NII書誌ID
- AN00193422
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- ISSN
- 1349998X
- 00215392
- http://id.crossref.org/issn/00215392
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- HANDLE
- 2115/38423
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- NDL書誌ID
- 5526072
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- 本文言語コード
- ja
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- データソース種別
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- JaLC
- IRDB
- NDL
- Crossref
- NDL-Digital
- CiNii Articles
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- 抄録ライセンスフラグ
- 使用不可
