Invasion information |
Range in Japan |
Hokkaido and Okinawajima Is. There were also records from Kumejima (Okinawa Islands) and Kikaijima (Amami Islands), where if the turtle is established or not is unclear. The populations on remaining parts of mainland of Japan are possibly non-native ones introduced from Korea, according to a recent literature investigation. In addition, additional introduction from continental China may occur recently. |
|
Origin |
Korean Peninsula. Recently imported from continental China. |
Date |
Late 18C. For recent introduction, there is many records since 1990s in Hokkaido. |
Route |
Deliberate: Release or escape of pet animals. |
Impact |
Potentially: Hybridization, competition, predation. Hybridization often occur between turtle species of Geoemydidae. Native organism(s) affected: Freshwater fishes and invertebrates (predation). Native turtles Mauremys japonicua (hybridization and competition) and Geoemyda japonica (hybridization). |
Regulation in Japan |
No action for prevention, mitigation, control, or eradication. |
Introduced range in other countries |
Populations on Taiwan are possibly non-native. |