Invasion information |
Range in Japan |
Established in Wakayama and Shizuoka Pref. Although there are several records in Chiba and Kanagawa Prefs., whether established or not is unknown. |
|
Origin |
Unknown. |
Date |
The first import to Japan was in 1954, for exhibition in Enoshima Aquarium. In Chiba Pref., found since 1998. In Shizuoka Pref., found since 2006. |
Route |
Deliberate: as pet, and as biological research material |
Impact |
Potentially: predation or competition to native freshwater animals. Actually: In Shizuoka Pref., predation on juveniles of aquafarming carp occurred. Native organism(s) affected: Native amphibians, fishes, freshwater invertebrates, and juveniles of aquafarming fishes. |
Regulation in Japan |
No action for prevention, mitigation, control, or eradication. |
Introduced range in other countries |
Established in UK, California, Chile, Mexico, Java, Ascension Island (S Atlantic Ocean) |