Ryukyu spiny rat

Short description: Species of rodent

Ryukyu spiny rat

Conservation status

Endangered (IUCN 3.1)[1]

Scientific classification
Domain:  | Eukaryota
Kingdom:  | Animalia
Phylum:  | Chordata
Class:  | Mammalia
Order:  | Rodentia
Family:  | Muridae
Genus:  | Tokudaia
Species:  |

T. osimensis

Binomial name
Tokudaia osimensis

(Y. Abe, 1934)

The Ryukyu spiny rat (Tokudaia osimensis) is a species of rodent in the family Muridae.[2] Endemic to Amami Ōshima island in the Amami Islands of the Ryukyu archipelago of Japan , its natural habitat is subtropical moist broadleaf forest. The karyotype has an odd diploid number, 2n = 25.[2] Like its relative T. tokunoshimensis, it has lost its Y chromosome and SRY gene.[3]

The species is threatened by habitat destruction and fragmentation, predation by feral cats and dogs and introduced mongooses, and competition with introduced black rats.[1]

## See also

* Ellobius lutescens
* Ellobius tancrei

## References

1. ↑ 1.0 1.1 Ishii, N. (2016). "Tokudaia osimensis". IUCN Red List of Threatened Species 2016: e.T21973A22409638. doi:10.2305/IUCN.UK.2016-1.RLTS.T21973A22409638.en. https://www.iucnredlist.org/species/21973/22409638. Retrieved 15 November 2021.
2. ↑ 2.0 2.1 Musser, G.G.; Carleton, M.D. (2005). "Superfamily Muroidea". in Wilson, D.E.; Reeder, D.M. Mammal Species of the World: A Taxonomic and Geographic Reference (3rd ed.). Johns Hopkins University Press. p. 1513. ISBN 978-0-8018-8221-0. OCLC 62265494. http://www.departments.bucknell.edu/biology/resources/msw3/browse.asp?id=13001850.
3. ↑ KAYOKO GEJI (August 23, 2012). "Y chromosome losing all genes, but men won't become extinct". The Asahi Shimbun. http://ajw.asahi.com/article/behind_news/social_affairs/AJ201208230009.

* Y-chromosome - Will it or will it not, hold on?

{{_}}  Wikidata ☰ Q1767684 entry

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