The Ryukyu spiny rat, Tokudaia osimensis, is a rodent in the family Muridae. It is endemic to Amami Ōshima, an island in the Amami Islands of the Ryukyu archipelago of Japan, and its natural habitat is subtropical moist broadleaf forest. Its chromosomes are unusual: the karyotype has an odd diploid number, 2n = 25, and like its relative Tokudaia tokunoshimensis it has lost its Y chromosome and the SRY gene. The species is threatened by habitat destruction and fragmentation, by predation from feral cats and dogs and introduced mongooses, and by competition with introduced black rats. The iNaturalist taxon record cites the IUCN Red List status of endangered.
Facts
Classification
ThreatsInvasive and Other Problematic Species, Genes and Diseases 1 Living or Extinct Conservation Status Connections
Child Taxon Of
In Biome
Source Ryukyu spiny rat (Wikipedia)
In the Other Atlases
Found In
Also in Geography Atlas: where this subject is found.
Source Ryukyu spiny rat (Wikipedia)LeadQuote, Lead
Endemic to Amami Ōshima island in the Amami Islands of the Ryukyu archipelago of Japan
Sources
1. Ryukyu spiny rat (Wikipedia)
Second paragraph, threats
predation by feral cats and dogs and introduced mongooses, and competition with introduced black rats
Lead
Endemic to Amami Ōshima island in the Amami Islands of the Ryukyu archipelago of Japan
In Biome: Tropical Rainforest, Lead, habitat
its natural habitat is subtropical moist broadleaf forest
View the Source2. iNaturalist: iNaturalist taxon record for Tokudaia osimensis
iNaturalistTaxon record, conservation status
"status_name": "endangered"
Taxon record, extinct flag
"extinct": false
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