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Foraging ecology of mature male Antarctic minke whales (Balaenoptera bonaerensis) revealed by stable isotope analysis of baleen plates
https://nipr.repo.nii.ac.jp/records/16907
https://nipr.repo.nii.ac.jp/records/169079558b3b0-e4b0-4db1-be16-a684ccfef6b3
Item type | 学術雑誌論文 / Journal Article(1) | |||||
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公開日 | 2022-05-26 | |||||
タイトル | ||||||
タイトル | Foraging ecology of mature male Antarctic minke whales (Balaenoptera bonaerensis) revealed by stable isotope analysis of baleen plates | |||||
タイトル | ||||||
言語 | en | |||||
タイトル | Foraging ecology of mature male Antarctic minke whales (Balaenoptera bonaerensis) revealed by stable isotope analysis of baleen plates | |||||
言語 | ||||||
言語 | eng | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Antarctic ecosystem | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Feeding habits | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Euphausia superba | |||||
キーワード | ||||||
言語 | en | |||||
主題Scheme | Other | |||||
主題 | Migration | |||||
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 | journal article | |||||
アクセス権 | ||||||
アクセス権 | metadata only access | |||||
アクセス権URI | http://purl.org/coar/access_right/c_14cb | |||||
著者 |
Ishikawa, Hiroshi
× Ishikawa, Hiroshi× Otsuki, Mayuko× Tamura, Tsutomu× Konishi, Kenji× Bando, Takaharu× Ishizuka, Mayumi× Ikenaka, Yoshinori× Nakayama, Shouta M.M.× Mitani, Yoko |
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抄録 | ||||||
内容記述タイプ | Abstract | |||||
内容記述 | The Antarctic minke whale (Balaenoptera bonaerensis) is a seasonal migrator that feeds mainly on Antarctic krill at higher latitudes during the summer and travels to lower latitudes to breed in winter. A previous study using δ13C and δ15N values of baleen plates showed that pregnant Antarctic minke whales feed on Antarctic krill in the foraging season, with less feeding during the breeding season. However, long-term changes in the habitat use and diet of males remain unknown. In this study, we estimated the foraging habits of nine mature male Antarctic minke whales using the stable isotope signatures of baleen plates. From Bayesian stable isotope mixing models, it was found that Antarctic krill was the predominant prey of male whales, and prey species in lower latitudes were rarely incorporated into the baleen plates. This result is consistent with that of female Antarctic minke whales. Eight whales showed at least one oscillation in δ13C and δ15N values, whereas one whale (AM246) showed no variation in δ15N values. This possibly indicates that AM246 remained in the Antarctic water year-round. Our results suggest multiple migration patterns of male Antarctic minke whales. | |||||
書誌情報 |
en : Polar Science 巻 31, p. 100785, 発行日 2022-03 |
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ISSN | ||||||
収録物識別子タイプ | ISSN | |||||
収録物識別子 | 18739652 | |||||
DOI | ||||||
識別子タイプ | DOI | |||||
関連識別子 | https://doi.org/10.1016/j.polar.2021.100785 | |||||
関連名称 | 10.1016/j.polar.2021.100785 |