Invasion information |
Range in Japan |
Triops longicaudatus and T. granarius are widely distributed in central to western Japan. Triops cancriformis is recorded from Yamagata, Nagano, Tochigi, and Miyagi Prefs. |
|
Origin |
Unknown. |
Date |
The first records of T. longicaudatus, T. cancriformis, and T. granarius are 1916, 1948, and 1966, respectively. |
Route |
Accidental: Hitchhiking on some transport such as crops. Spread within Japan is possibly due to captive breeding as pet and/or deliberate introduction to rice field for weed eradication. |
Impact |
This species inhibit growth of sprout and harmful to rice cropping in USA. But, it is not harmful to Japanese style rice cropping. |
Regulation in Japan |
No action for prevention, mitigation, control, or eradication. |
Introduced range in other countries |
Unknown. |