Diet of Mass-Stranded Striped Dolphins (Stenella coeruleoalba) in Southern Japan (East China Sea)

Matsuda, Ayaka; Yamada, Tadasu K.; Tajima, Yuko; Kunisue, Tatsuya; Amano, Masao; Matsuishi, Takashi F.

Diet of Mass-Stranded Striped Dolphins (Stenella coeruleoalba) in Southern Japan (East China Sea)

Matsuda, Ayaka; Yamada, Tadasu K.; Tajima, Yuko et al.

Mammal Study, 2021, 46(1), 17-24

Permalink : https://hdl.handle.net/2115/84412

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アクセス権	open access
URI	https://hdl.handle.net/2115/84412
タイトル	Diet of Mass-Stranded Striped Dolphins (Stenella coeruleoalba) in Southern Japan (East China Sea)
著者	Matsuda, Ayaka ; Yamada, Tadasu K. ; Tajima, Yuko ; Kunisue, Tatsuya ; Amano, Masao ; Matsuishi, Takashi F.
著者名 Matsuda, Ayaka
e-Rad_Researcher 70125681 著者名 Yamada, Tadasu K.
e-Rad_Researcher 00450635 著者名 Tajima, Yuko
e-Rad_Researcher 90380287 著者名 Kunisue, Tatsuya
e-Rad_Researcher 50270905 著者名 Amano, Masao
e-Rad_Researcher 60250502 著者名 Matsuishi, Takashi F.
言語	英語
キーワード	cetacean ecology
	Delphinidae
	stable isotopes
	stomach contents
発行日	2021-01
出版者	BioOne
収録物名	Mammal Study
巻(号)	46(1)
ページ	17-24
抄録	Striped dolphins (Stenella coeruleoalba) mass-stranded on 26 April 2013 at Minamisatsuma, Kagoshima Prefecture, in southern Japan (East China Sea). The diet of the mass-stranded striped dolphins was investigated to reveal their foraging pattern through analyses of the stomach contents and stable isotopes in muscle. Of 26 stomachs sampled, 25 contained hard parts of prey animals; no fleshy remains were found in any of the stomachs. The identified prey species represented four cephalopod families: Loliginidae, Onychoteuthidae, Histioteuthidae, and Ommastrephidae. Among these, ommastrephids had the highest abundance (42.4%) and frequency of occurrence (69.2%). A chi-square test revealed that the prey species consumed did not significantly differ between male and female dolphins, although deeper-water squids (Onychoteuthidae and Histioteuthidae) appeared only in the stomachs of females. The values of δ13C ranged from –20.4 to –17.0‰ (mean ± SD: –18.2 ± 0.9‰), and values of δ15N ranged from 10.2 to 12.5‰ (10.8 ± 0.5‰), with a significant difference in δ15N between sexes (P < 0.05).
資源タイプ	学術雑誌論文
出版タイプ	Accepted Manuscript
権利情報	This is a post-peer-review, pre-copyedit version of an article published in Mammal Study. The final authenticated version is available online at: https://doi.org/10.3106/ms2020-0005.
PISSN	1343-4152
NCID	AA11185060
関連情報 (isVersionOf)	出版社版DOI https://doi.org/10.3106/ms2020-0005