Ecological Risk Screening Summary - White River Crayfish (Procambarus acutus) - 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.

Procambarus acutus is a crayfish native to the eastern and central U.S. It has been introduced into at least 8 new locations in the U.S., as well as Egypt and The Netherlands. Little is known about its impact on the ecosystems where it has been introduced, although in The Netherlands its populations achieve high density. Impacts are hypothesized to be high given that its congener, P. clarkii, is highly invasive. Climate match to the contiguous U.S. is high. Overall risk posed by this species is uncertain.