@article{oai:repository.dl.itc.u-tokyo.ac.jp:02000461, author = {Otsuki, Mayuko and Kohyama, Kaoru and Goshima, Wataru and Kobayashi, Motoki and Hasegawa, Yuya and Morita, Yuka and Ijiri, Shigeho and Mitani, Yoko}, issue = {1}, journal = {Coastal marine science}, month = {}, pages = {1--6}, title = {Effect of diet on faecal testosterone metabolite levels in a northern fur seal (Callorhinus ursinus) expressed as ash-free dry weight}, volume = {44}, year = {2021} }