Invasion information |
Range in Japan |
Not established in Japan. |
|
Origin |
Unintroduced to Japan. |
Date |
|
Route |
Ballast water and/or sea chest. This species was recorded from sea chest. |
Impact |
Potentially: predation on native molluscs, competition with native crabs, and impact on fishery. In Atlantic N America, molluscs actually declined by this species. This species is intermediate host of a parasite (thorn-headed worm). It possibly decline some birds. Native organism(s) affected: Native marine invertebrates, birds. |
Regulation in Japan |
100 of the World's Worst Invasive Alien Species. |
Introduced range in other countries |
Atlantic coast of N America, S Africa, Australia. |