Ecological Risk Screening Summary - Dreissena caputlacus (a mussel, 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.

Dreissena caputlacus is a freshwater mollusk native to Turkey. Little information is available for this species and the taxonomy of this species and a few closely related Dreissena species may not be resolved. It is not currently present in trade. It is regulated as part of the Dreissenidae family or Dreissena genus in six States. No introductions outside of its native range have been reported. The history of invasiveness is classified as No Known Nonnative Population. The overall climate match with the contiguous United States is High. Areas of high and medium match were found mainly in the western half of the United States, and around the Great Lakes. The certainty of this assessment is Low due to a lack of information. The overall risk assessment category for Dreissena caputlacus is Uncertain.