Ecological Risk Screening Summary - Corbicula possoensis (a clam, no common name) - 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 possoensis is a freshwater bivalve endemic to Lake Poso in Sulawesi, Indonesia. This species is listed as endangered. C. possoensis has an uncertain history of invasiveness; it has not been reported outside of its native range or found in trade. The climate match for the contiguous United States was uniformly low with all individual states scoring a low climate score. No georeferenced locations were available to use in selecting source locations for the climate match, so source locations were selected based on a general description of the range of the species. The certainty of assessment is low. The overall risk assessment for Corbicula possoensis is uncertain.