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propagation of stocks from the lower Colorado River basin in Lake Mohave, Arizona, and relates <br />broodstock development at Dexter NFHTC to upper and lower basin needs. The purpose of this <br />document is twofold: to provide the framework for maintaining genetic reserve populations of <br />razorback that serve as broodfish, and to provide a captive propagation,strategy that ensures <br />production fish adequately represent the available razorback genome. <br />Dexter's genetic management goals and captive propagation objectives include maintaining a Lake <br />Mohave razorback sucker genetic refuge represented by 3,000 individuals derived from the 1981 <br />captive stock, ninety unique paired matings from wild-caught adults and six year classes of wild- <br />caught larvae. A major component to the program is genetic monitoring, and production of known <br />genetic quality fish in sufficient numbers to assist in the recovery, research and other approved <br />management needs as defined in the Razorback Sucker Recovery Plan (U. S. Fish and Wildlife <br />Service 1998) and Razorback Sucker Recovery Goals (U. S. Fish and Wildlife Service 2002). This <br />Plan incorporates genetic guidelines provided by the Recovery Implementation Program for <br />Endangered Fish Species in the Upper Colorado River Basin (U. S. Fish and Wildlife Service <br />1994), and the Genetics Management Plan for the Endangered Fishes of the San Juan River (Crist <br />and Ryden 2003). <br />Authority: <br />Work activities identified in this document are conducted under authority of the Endangered <br />Species Act of 1973, as amended, and the Federal Fish and Wildlife Permit # TE676811-8 <br />held for such purposes. <br />v