Invasion information |
Range in Japan |
C to W Honshu, Shikoku, Kyushu, Ryukyus, and Ogasawara (Bonin) Islands. |
|
Origin |
Unknown. |
Date |
Introduced in late 19 C to Ryukyus. Spread in mainland of Japan after W. W. II. Recently spread in northern part of Honshu Is. |
Route |
Accidental: Details unknown. |
Impact |
Competition with native species, crops, pasture, etc. Toxic to domestic animals. Allelopathy. Parasite (insects, nematodes, viruses, etc). Native organism(s) affected: Native plants, crops, domestic animals. |
Regulation in Japan |
No action for prevention, mitigation, control, or eradication. |
Introduced range in other countries |
South America, Africa, Asia, Australia |