Invasion information | ||
Range in Japan | Izu Islnads (Izuoshima, Niijima, Miyakejima), Hokkaido (several areas in southern and western part). There is a record in Kuchinoshima Is. (Tokara Islands) where establishment status is unknown. | |
Origin | Unknown. Possibly several areas in Japan. | |
Date | The first record in Hokkaido was in 1985. | |
Route | Accidental: Tadpole of this species may have hitchhiked on Carp seedling for aquaculture (Hokkaido population). | |
Impact | Unknown Native organism(s) affected: | |
Regulation in Japan | No action for prevention, mitigation, control, or eradication. | |
Introduced range in other countries | Hawaii (from Japan) |
Reference | Notes |
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