Invasive species include those introduced from overseas, such as the red-eared slider, as well as plants or animals introduced outside their native range within Japan (Siberian chipmunk, etc.). [1] This is a non-exhaustive list, largely based on data from the National Institute of Environmental Studies. [2]
The nutria, also known as the coypu, is a large, herbivorous, semiaquatic rodent. Classified for a long time as the only member of the family Myocastoridae, Myocastor is now included within Echimyidae, the family of the spiny rats. The nutria lives in burrows alongside stretches of water and feeds on river plant stems. Originally native to subtropical and temperate South America, it has since been introduced to North America, Europe, Asia, and Africa, primarily by fur farmers. Although it is still hunted and trapped for its fur in some regions, its destructive burrowing and feeding habits often bring it into conflict with humans, and it is considered an invasive species. Nutria also transmit various diseases to humans and animals, mainly through water contamination.
Invasive species in Australia are a serious threat to the native biodiversity, and an ongoing cost to Australian agriculture. Numerous species arrived with European maritime exploration and colonisation of Australia and steadily since then.
The Siberian chipmunk, also called common chipmunk, is native to northern Asia from central Russia to China, Korea, and Hokkaidō in northern Japan. It was imported from South Korea and introduced in Europe as a pet in the 1960s.
Finlayson's squirrel or the variable squirrel is a species of rodent in the family Sciuridae. It is found in Cambodia, Laos, Myanmar, Thailand, and Vietnam. The species occurs in a wide range of wooded habitats, including gardens and parks in cities like Bangkok. It was named in honour of the Scottish naturalist and traveller George Finlayson.
The Gau iguana is a species of iguana endemic to Gau Island in the Fijian archipelago. It mostly lives in the well-preserved upland forests of the island, with smaller populations in the degraded coastal forests. It can be distinguished from other South Pacific iguanas by the male's distinctive color pattern and solid green throat. It is also the smallest of all South Pacific iguanas, being about 13% smaller than the third smallest species and 40% smaller than the largest extant species.
The Ezo chipmunk is a subspecies or local population of the Siberian chipmunk; it is found in what was once known as Ezo, namely Hokkaidō, Japan, and Sakhalin and the Southern Kuriles, Russia.
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