Ecological Risk Screening Summary - Striate Peaclam (Pisidium punctiferum) - 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.

Pisidium punctiferum, Striate Peaclam, is a mollusk that is native to Mexico, Central America, the Caribbean, and South America. It is most often observed in lentic habitats and has much ecological plasticity. P. punctiferum has been introduced and become established in Florida and Texas. The History of Invasiveness for P. punctiferum is classified as Data Deficient due to lack of information on impacts from the introductions. The climate matching analysis for the contiguous United States indicates establishment concern for this species. Areas of high match occurred in the southern Plains and along the Gulf and southern Atlantic coasts. Western and more northern areas tended to have a medium to low match. The Certainty of Assessment for this ERSS is classified as Low due to limited information regarding impacts from the introductions and incomplete distribution information to use for the climate match. The Overall Risk Assessment Category for Pisidium punctiferum in the contiguous United States is Uncertain.