Gila Trout ('Oncorhynchus gilae') Recovery Plan (Third Revision).

摘要

Gila trout (Oncorhynchus gilae) is endemic to mountain streams in the Gila, San Francisco, Agua Fria, and Verde river drainages in New Mexico and Arizona (Miller, 1950; Minckley, 1973:61-62; Behnke, 1992:212-214). Although the species was known in the upper Gila River basin since at least 1885, it was not described until 1950, by which time its distribution had been dramatically reduced (Miller, 1950). Gila trout was originally recognized as endangered under the Federal Endangered Species Preservation Act of 1966 (U.S. Fish and Wildlife Service, 1967). Federal-designated status of the fish as endangered was continued under the Endangered Species Act of 1973 (U.S. Fish and Wildlife Service, 1975). Gila trout was listed as endangered by the New Mexico Department of Game and Fish in 1975 under the Wildlife Conservation Act and was downlisted to threatened in 1988. Gila trout are considered a Species of Concern by the Arizona Game and Fish Department.