Ecological Risk Screening Summary - Japanese Corbicula (Corbicula japonica) - Uncertain Risk

Species that are considered uncertain risk need a more in-depth assessment beyond the Risk Summary to better define the species’ risk to U.S. environments. This additional information will help inform decisions on where, when, and how the species may be used to minimize risks of them becoming invasive.

Corbicula japonica is a brackish water clam found in Japan and South Korea. C. japonica is commercially harvested in Japan for a food source. The history of invasiveness is uncertain. No introductions have been reported for C. japonica anywhere outside of their native range. The overall climate match for the contiguous United States is high with areas of high climate match concentrated in the Great Lakes region and the Northeast. The certainty of assessment is low due to lack of information. The overall risk assessment category for Corbicula japonica is uncertain.