Invasion information | ||
Range in Japan | A part of Hokkaido, Tsushima (Toyotamacho) | |
Origin | From Shizuoka to Hokkaido, and from mainland of Nagasaki Pref. to Tsushima. | |
Date | The first records in Hokkaido and Tsushima was in 1993 and 2003, respectively. | |
Route | Deliberate: Release of education material (Hokkaido). Unknown for Tsushima population. | |
Impact | In Kitahiroshima of Hokkaido, a native frog Hyla japonica tend to have small population size in rice fields with Rana nigromaculata. This implies an impact of competition and/or predation on native frogs. Predation on native invertebrates. There is a record of predation on a larva of Cybister japonicus. Native organism(s) affected: Native frogs (competition, predation). Terrestrial and aquatic invetebrates (predation). | |
Regulation in Japan | No action for prevention, mitigation, control, or eradication. | |
Introduced range in other countries | Eastern Turkmenistan. An isolated population in Yunnan, continental China might be non-native. |
Reference | Notes |
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