Invasion information |
Range in Japan |
Ryukyu Archipelago (Okinawajima, Kumejima, Miyakojima, Irabujima, Ikejima, Henzajima Is.) and Ogasawara Islands (Chichijima Is.) |
|
Origin |
Unknown for Okinawa populations. From Okinawajima Is. to Ogasawara. |
Date |
The first record in Japan was in October 1990, at southern Okinawajima Island. |
Route |
Accidental: Possibly hitchhiking on transportation of plants. |
Impact |
Predation on ground and arboreal land snails. An intermediate host of angiostrongyliasis (a parasitic disease by Angiostrongylus cantonensis). Native organism(s) affected: Native land snails (predation). Human (angiostrongyliasis). |
Regulation in Japan |
Import, transport and keeping are prohibited by the Invasive Alien Species Act. |
Introduced range in other countries |
Australia, Guam, Hawaii, Micronesia, Philippines, and other Pacific Islands, and Indian Ocean Islands such as Maldives. |