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Alien/Invasive Mammals of the Aleutian Islands Few
land mammals are native to the Aleutian Islands unit of the Alaska Maritime National
Wildlife Refuge west of Unimak Island. One exception is the red fox (Vulpes
vulpes), endemic only to the larger islands in the Fox island group, Umnak,
Unalaska, Akutan and Akun, and, in the same area, possibly tundra voles (Microtus
oeconomus), whose origin is unclear. Humans introduced numerous land mammals.
Some died out, some were removed but those that still remain are listed below. Introduced
by humans and present on islands indicated
| Lagomorpha | |
Island(s) | | European Rabbit
| Oryctolagus cuniculus |
Anangula, Ananiuliak, Poa, Tangik | | Rodentia
| | |
| Arctic ground squirrel |
Cittellus parryi | Kavalga, Umnak,
Unalaska, | | Deer mouse |
Peromyscus maniculatus | Shemya Island |
| House mouse |
Mus musculus | Kiska, Unalaska |
| Norway rat |
Rattus norvegicus | Attu, Kiska,
Little Kiska, Rat, Amchitka, Adak, Great Sitkin, Kagalaska, Atka, Unalaska, Sedanka,
Akutan, and satellite islands near these larger islands. | |
Roof rat | Rattus rattus |
Shemya | | Carnivora | | |
| Arctic fox |
Alopex lagopus | originally almost
all islands >1,000 acres | | Red
fox | Vulpes vulpes |
Chuginadak, Tigalda | | Artiodactyla | | |
| Caribou (reindeer) |
Rangifer tarandus | Adak, Atka, Umnak,
Unalaska | | Cattle |
Bos spp. | Umnak, Unalaska, Akun, |
| Sheep |
Ovis aries | Unalaska, Umnak |
| Perissodactyla | | |
| Horse |
Equus caballus | Unalaska, Umnak |
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