Endangered and Threatened Wildlife and Plants; Endangered Species Status for Salamander Mussel and Designation of Critical Habitat

摘要

We, the U.S. Fish and Wildlife Service (Service), propose to list the salamander mussel (Simpsonaias ambigua), a freshwater mussel species from the United States (Arkansas, Illinois, Indiana, Iowa, Kentucky, Michigan, Minnesota, Missouri, New York, Ohio, Pennsylvania, Tennessee, West Virginia, and Wisconsin) and Canada (Ontario), as an endangered species under the Endangered Species Act of 1973, as amended (Act). This determination also serves as our 12-month finding on a petition to list the salamander mussel. After a review of the best available scientific and commercial information, we find that listing the species is warranted. Accordingly, we propose to list the salamander mussel as an endangered species under the Act. We also propose to designate critical habitat for the salamander mussel under the Act. In total, approximately 2,012 river miles (3,238 kilometers) in Indiana, Kentucky, Michigan, Minnesota, New York, Ohio, Pennsylvania, Tennessee, West Virginia, and Wisconsin fall within the boundaries of the proposed critical habitat designation. We announce the availability of a draft economic analysis (DEA) of the proposed designation of critical habitat for the salamander m