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Feeding behavior of the Antarctic krill, Euphausia superba DANA. II. Effects of food condition on particle selectivity
https://nipr.repo.nii.ac.jp/records/2035
https://nipr.repo.nii.ac.jp/records/20353443ecdc-0fdf-436b-8560-5605aae881d6
名前 / ファイル | ライセンス | アクション |
---|---|---|
KJ00000012588.pdf (1.7 MB)
|
Item type | 紀要論文(ELS) / Departmental Bulletin Paper(1) | |||||
---|---|---|---|---|---|---|
公開日 | 1986-12-01 | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Feeding behavior of the Antarctic krill, Euphausia superba DANA. II. Effects of food condition on particle selectivity | |||||
言語 | ||||||
言語 | eng | |||||
資源タイプ | ||||||
資源タイプ識別子 | http://purl.org/coar/resource_type/c_6501 | |||||
資源タイプ | departmental bulletin paper | |||||
ページ属性 | ||||||
内容記述タイプ | Other | |||||
内容記述 | P(論文) | |||||
著者名(英) |
Ishii, Haruto
× Ishii, Haruto |
|||||
著者所属(英) | ||||||
en | ||||||
Tokyo University of Fisheries | ||||||
抄録(英) | ||||||
内容記述タイプ | Other | |||||
内容記述 | Effects of particle size distribution, total particle concentration, and animal size on selective feeding of the Antarctic krill, Euphausia superba DANA, were studied using natural particles as food. Percent particle retention efficiency calculated from the filtering rate for each particle size spectrum increased abruptly for large size particles. This selective feeding for large particles was apparent regardless of abundance of smaller particles. However, the minimum particle size with 50% retention efficiency (half-retention size) increased with increasing total particle concentration. These results suggest that the feeding of the krill shows intensive selection for large particles when food is abundant, but its feeding is rather passive when food is scarce. This flexible feeding seems to be an adaptive behavior to obtain the energy more effectively in the food scarce ocean. | |||||
雑誌書誌ID | ||||||
収録物識別子タイプ | NCID | |||||
収録物識別子 | AA00733561 | |||||
書誌情報 |
Memoirs of National Institute of Polar Research. Special issue 巻 44, p. 96-106, 発行日 1986-12 |