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002801 8.3 Humpback Chub 1. Resolve taxonomic problems in Colorado River Basin Gila 2. Protect humpback chub populations and tbeir habitat Establish and maintain refugia 3, Assess potential reintroduction or augmentation sites and implement stocking where deemed necessary and feasible Establish and maintain adequate production facilities Provide and support appropriate production facilities Identify and secure adequate numbers of tbe proper brood stocks Maintain genetic variability and integrity in brood stocks Develop/refine rearing and bandling tecbniques Establisb production goals in terms of numbers and sizes that are needed for reintroduction or augmentation River System contains three distinct species; bonytai/, humpback. and roundtail chub. The allozyme and mitochondria/ DNA analyses should be completed in 1997. See description above for bony tail chub. Currently, only 15 adult humpback chubs from the Black Rocks area of the Colorado River are being maintained in refuge at HorsethiefSWA. There is no backup refuge tor this population. No refugia are being maintained for the Yampa, Desolation- Gray Canyon, Westwater Canyon, or Cataract Canyon presumptive stocks. No progress has been made regarding this activity. Due to the lack of any reintroduction plan for the humpback chub, assessment of adequate production facilities has not been performed. Current facility requirements for the humpback chub include the pond space necessary to maintain a single refugia population with no backup. No progress has been made regarding this activity. The current broodstock represents only one area of five presumptive populations within the Upper Basin. No development of brood stocks is occurring or is planned. No progress has been made regarding this activity. No progress has been made regarding this activity, No progress has been made regarding this activity. 41