| Invasion information |
| Range in Japan |
Almost entire Honshu, Shikoku, and Kyushu |
|
| Origin |
Unknown. |
| Date |
1980s. |
| Route |
Deliberate: possibly originate from imported clams for aquaculture. |
| Impact |
Competition, hybridization against native species. harmful to some human environment. Nutrient enrichment. Carrying other invasive molluscs such as golden mussel (Limnoperna fortunei) and muldsnail (Potemopyrgus antipodarum). Native organism(s) affected: Native clams. |
| Regulation in Japan |
No action for prevention, mitigation, control, or eradication. |
| Introduced range in other countries |
N & S America, Europe, Australia |