Habitat and Ecology
Molecular Biology and Genetics
On 22nd Feb 2012, NewScientist reported following information about genetic pecularity:
Male Japanese Ryukyu spiny rats (Tokudaia osimensis) lack a Y chromosome.
IUCN Red List Assessment
Red List Category
Red List Criteria
- 1996Endangered(Baillie and Groombridge 1996)
- 1994Vulnerable(Groombridge 1994)
- 1990Endangered(IUCN 1990)
- 1988Indeterminate(IUCN Conservation Monitoring Centre 1988)
- 1986Indeterminate(IUCN Conservation Monitoring Centre 1986)
Ryukyu spiny rat
The Ryukyu spiny rat (Tokudaia osimensis) is a species of rodent in the family Muridae. It is found only on Amami (Ryukyu islands) in Japan. Its natural habitat is temperate forests. They have lost their Y chromosome.
- KAYOKO GEJI (August 23, 2012). "Y chromosome losing all genes, but men won't become extinct". The Asahi Shimbun. Retrieved 11 January 2014.
- Ishii, N. 2000. Tokudaia osimensis. 2006 IUCN Red List of Threatened Species. Downloaded on 20 July 2007.
- Musser, G. G. and M. D. Carleton. 2005. "Superfamily Muroidea", in D. E. Wilson and D. M. Reeder (eds) Mammal Species of the World: a Taxonomic and Geographic Reference pp. 894–1531, Johns Hopkins University Press, Baltimore.
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