Invasion information |
Range in Japan |
Hokkaido, Aomori, Iwate, Akita, Yamagata, Miyagi, Niigata, Tochigi, Gumma, Saitama, Kanagawa, Nagano, Shizuoka, Aichi, Gifu, Mie, wakayama, Toyama, Ishikawa, Shiga, Kyoto, Hyogo, Ehime, and Miyazaki Prefs. |
|
Origin |
Australia or New Zealand. |
Date |
The first record was in 1990, at Mie Pref. |
Route |
Accidental: Hitchhiking on fishery products, on introduction of another freshwater snail (Semisulcospira libertina, as prey for firefly), or on feces of fish. |
Impact |
Competition with native freshwater snails. Native organism(s) affected: Freshwater snails such as Semisulcospira libertina. |
Regulation in Japan |
Keeping this species is prohibited in Shiga Pref. |
Introduced range in other countries |
Australia, Europe, North America (Great Lakes, and Rocky Mountains to western coastal region), Iraq. |