Tokudaia tokunoshimensis

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Tokunoshima spiny rat
Conservation status
Scientific classification
Kingdom: Animalia
Phylum: Chordata
Class: Mammalia
Order: Rodentia
Family: Muridae
Genus: Tokudaia
Species: T. tokunoshimensis
Binomial name
Tokudaia tokunoshimensis
Endo & Tsuchiya , 2006
Tokudaia tokunoshimensis distribution.png

The Tokunoshima spiny rat (Tokudaia tokunoshimensis) is a rodent found only on the island of Tokunoshima in Japan. Due to its small habitat, it is considered endangered. It is commonly found in the forests of this island.[1] It is one of the few mammals that lack a Y chromosome.[2]


  1. ^ a b Kaneko, Y. (2008). Tokudaia tokunoshimensis. In: IUCN 2008. IUCN Red List of Threatened Species. Retrieved 6 January 2012.
  2. ^ Kuroiwa A, Handa S, Nishiyama C, Chiba E, Yamada F, Abe S, Matsuda Y (2011-06-08). "Additional copies of CBX2 in the genomes of males of mammals lacking SRY, the Amami spiny rat (Tokudaia osimensis) and the Tokunoshima spiny rat (Tokudaia tokunoshimensis)". Chromosome Res 19: 635–44. doi:10.1007/s10577-011-9223-6. PMID 21656076.