Growth of Razorback Sucker (Xyrauchen texanus) at Bubbling Ponds Fish Hatchery November 2011 Lower Colorado River Multi-Species Conservation Program Steering Committee Members Federal Participant Group California Participant Group Bureau of Reclamation California Department of Fish and Game U.S. Fish and Wildlife Service City of Needles National Park Service Coachella Valley Water District Bureau of Land Management Colorado River Board of California Bureau of Indian Affairs Bard Water District Western Area Power Administration Imperial Irrigation District Los Angeles Department of Water and Power Palo Verde Irrigation District Arizona Participant Group San Diego County Water Authority Southern California Edison Company Arizona Department of Water Resources Southern California Public Power Authority Arizona Electric Power Cooperative, Inc. The Metropolitan Water District of Southern Arizona Game and Fish Department California Arizona Power Authority Central Arizona Water Conservation District Cibola Valley Irrigation and Drainage District Nevada Participant Group City of Bullhead City City of Lake Havasu City Colorado River Commission of Nevada City of Mesa Nevada Department of Wildlife City of Somerton Southern Nevada Water Authority City of Yuma Colorado River Commission Power Users Electrical District No. 3, Pinal County, Arizona Basic Water Company Golden Shores Water Conservation District Mohave County Water Authority Mohave Valley Irrigation and Drainage District Native American Participant Group Mohave Water Conservation District North Gila Valley Irrigation and Drainage District Hualapai Tribe Town of Fredonia Colorado River Indian Tribes Town of Thatcher Chemehuevi Indian Tribe Town of Wickenburg Salt River Project Agricultural Improvement and Power District Unit “B” Irrigation and Drainage District Conservation Participant Group Wellton-Mohawk Irrigation and Drainage District Yuma County Water Users’ Association Ducks Unlimited Yuma Irrigation District Lower Colorado River RC&D Area, Inc. Yuma Mesa Irrigation and Drainage District The Nature Conservancy Other Interested Parties Participant Group QuadState County Government Coalition Desert Wildlife Unlimited Lower Colorado River Multi-Species Conservation Program Growth of Razorback Sucker (Xyrauchen texanus) at Bubbling Ponds Fish Hatchery Prepared by: Matthew W. O’Neill, David L. Ward, and William T. Stewart, Arizona Game and Fish Department, Research Branch1 1 5000 West Carefree Highway, Phoenix, AZ 85086 Lower Colorado River Multi-Species Conservation Program Bureau of Reclamation Lower Colorado Region Boulder City, Nevada http://www.lcrmscp.gov November 2011 Table of Contents EXECUTIVE SUMMARY........................................................................................................................................5 Literature review...................................................................................................................................................................5 Growth during disease treatments................................................................................................................................5 Pond growth studies.............................................................................................................................................................6 Conclusions...............................................................................................................................................................................6 I. LITERATURE REVIEW......................................................................................................................................8 SECTION SUMMARY ...................................................................................................................................................................8 INTRODUCTION ..........................................................................................................................................................................9 SUMMARY OF FACILITIES ......................................................................................................................................................10 Bubbling Ponds State fish Hatchery...........................................................................................................................13 Dexter National Fish Hatchery.....................................................................................................................................14 Grand Valley Native Fish Facility................................................................................................................................15 Ouray National Fish Hatchery......................................................................................................................................16 Willow Beach National Fish Ha t chery......................................................................................................................17 Uvalde National Fish Hatchery ....................................................................................................................................17 OVERVIEW OF DIFFERENCES IN CULTURE METHODS......................................................................................................18 GENERAL INFORMATION ON FACTORS THAT AFFECT FISH GROWTH ..........................................................................22 SPECIFIC INFORMATION ON RAZORBACK SUCKER GROWTH..........................................................................................23 Variable growth..................................................................................................................................................................23 Temperature.........................................................................................................................................................................24 Density.....................................................................................................................................................................................24 Feed ration ............................................................................................................................................................................25 Handling stress....................................................................................................................................................................25 MEASURING GROWTH IN CAPTIVE FISH ............................................................................................................................26 CONCLUSIONS..........................................................................................................................................................................27 SPECIFIC RESEARCH RECOMMENDATIONS ........................................................................................................................28 II. THE EFFECT OF DISEASE TREATMENTS ON RAZORBACK SUCKER GROWTH.......................... 29 SECTION SUMMARY................................................................................................................................................................29 INTRODUCTION .......................................................................................................................................................................30 METHODS.................................................................................................................................................................................30 RESULTS ...................................................................................................................................................................................32 DISCUSSION..............................................................................................................................................................................33 ACKNOWLEDGEMENTS ..........................................................................................................................................................34 III. RAZORBACK GROWTH RATES AT BUBBLING PONDS – 2009-2011........................................... 35 SECTION SUMMARY ................................................................................................................................................................35 INTRODUCTION .......................................................................................................................................................................37 Razorback growth rate in lined ponds......................................................................................................................37 Growth rate in an unlined pond...................................................................................................................................38 Effect of sorting on growth ............................................................................................................................................39 Effect of Ich on razorback sucker growth rates....................................................................................................39 METHODS.................................................................................................................................................................................39 Razorback growth rate in lined ponds......................................................................................................................39