| タイトル |
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en
Feeding habits of Pacific cod larvae and juveniles in Mutsu Bay, Japan
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| 作成者 |
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| アクセス権 |
open access |
| 権利情報 |
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ja
© 1995 公益社団法人日本水産学会
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en
© 1995 The Japanese Society of Fisheries Science
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| 主題 |
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Other
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Pacific cod
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Other
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larvae and juveniles
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Other
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feeding habits
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Other
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Mutsu Bay
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NDC
663
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| 内容注記 |
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Abstract
en
The diets and prey widths of Pacific cod (Gadus macrocephalus) larvae and juveniles were examined in Mutsu Bay. In early March, 11 yolk-sac larvae were caught in midwater of the bay mouth. Five of 11 larvae captured had not opened their mouths, and the remaining six had not fed. Post-larvae ≤ 7mm in total length (TL) fed on copepod nauplii, particularly Pseudocalanus nauplii. Prey items of post-larvae >7mm TL were chiefly crustacean eggs, and Pseudocalanus spp. copepodites and adults. From April to June, the main food organisms of cod juveniles were calanoid copepods, and changed from Pseudocalanus spp. to Calanus pacificus, Acartia clausi, and Centropages abdominalis. In addition, cod juveniles opportunistically fed on large-sized food organisms, namely, reptant megalopae, planktonic gastropods, and natant zoeae. In July, cod juveniles mainly fed on benthic prey items, such as gammarid amphipods and fish. It seems probable that these large-sized food organisms play an important role as alternative prey for cod juveniles when they change their main food from calanoid copepods to benthic prey items.
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| 出版者 |
en
Japanese Society of Scientific Fisheries
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| 日付 |
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| 言語 |
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| 資源タイプ |
journal article |
| 出版タイプ |
VoR |
| 資源識別子 |
HDL
http://hdl.handle.net/2115/38557
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| 関連 |
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isIdenticalTo
DOI
https://doi.org/10.2331/fishsci.61.415
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| 収録誌情報 |
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PISSN
0919-9268
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NCID
AA10993718
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en
Fisheries Science
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巻61
号3
開始ページ415
終了ページ422
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| ファイル |
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| コンテンツ更新日時 |
2023-07-26 |
