Lutra lutra whiteleyi Gray, 1867

Japanese otter



Taxonomy & Nomenclature

Synonym/s: Lutronectes whiteleyi Gray, 1867


Considered a synonym of L. l. lutra by (Wilson & Reeder, 2005).


Conservation Status


Last record: 1950's?


Declared extinct by the Japanese government in 2012:



Hokkaido, Japan


Biology & Ecology










Original scientific description:

Gray J. E. (1867). Notes of Lutronectes whiteleyi, an otter from Japan. Proc. zool. Soc. Lond. 1867: 180-182.


Other references:

Hudon, Daniel. (2014). Eulogies for Lost Species. Clarion 17: 59-63.

Imaizumi, Yoshinori. (1949). The Natural History of Japanese Mammals. vii + 348pp. Yôyô Shobo, Tokyo. (In Japanese)

Imaizumi, Yoshinori. (1975). A taxonomic investigation of Lutronectes whiteleyi Gray. J. mamm. Soc. Japan 6: 127-136. (In Japanese with English summary)

Imaizumi, Y. and Yoshiyuki, M. (1989). Taxonomic status of the Japanese otter (Carnivora, Mustelidae), with a description of a new species. Bulletin of the National Science Museum Tokyo Series A 15: 177-188.

Ryo Sakurai, Richard C. Stedman, Hiroshi Tsunoda, Hiroto Enari and Takuro Uehara. (2022). Comparison of perceptions regarding the reintroduction of river otters and oriental storks in Japan. Cogent Social Sciences 8(1): 2115656. doi:10.1080/23311886.2022.2115656

Wilson, D. E. and Reeder, D. M. (2005). Mammal species of the world: a taxonomic and geographic reference. Third edition. Baltimore, MD: John Hopkins University Press.


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