| Invasion information |
| Range in Japan |
Ehime, Kochi and Kagawa Prefs. |
|
| Origin |
Unknown. |
| Date |
Recorded since 1998 |
| Route |
Deliberate: Escape or release of pet animal. |
| Impact |
Unknown. According to a report published in 2007, the invasion was at an early phase, and the impact seemed little. Native organism(s) affected: |
| Regulation in Japan |
Sylviidae (without invasive alien species) is designated as Uncategorized Alien Species, which requires a risk assessment before import to Japan (the Invasive Alien Species Act). |
| Introduced range in other countries |
None. |