Ecological Risk Screening Summary - Water Flea (Cornigerius maeoticus maeoticus) - 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.

The history of invasiveness of Cornigerius maeoticus maeoticus is not documented. There is a history of introductions but no information on any impacts. The lack of information on impacts may be due to a lack of research in general or the research has been published in non-English language journals. The climate match is high, especially in the Great Lakes basin where Baker et al. (2015) states that is could be introduced through ballast water from the Baltic Sea. The certainty of assessment is low. There is missing information and the distribution used in the climate match is based on generalized written sources and is not believed to be complete. The overall risk assessment category is uncertain.