CUI-UI (Chasmistes Cujus)
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TECHNICAL/AGENCY DRAFT CUI-UI (Chasmistes cujus) Second Revision RECOVERY PLAN Original Approved: January 23, 1978 First Update Approved: May 8, 1980 First Revision Approved: November 22, 1983 Prepared by The Cui-ui Recovery Team for Region 1 U.S. Fish and Wildlife Service Portland, Oregon Approved XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX Regional Director, U.S. Fish and Wildlife Service Date: • DISCLAIMER Recovery plans delineate reasonable actions which are believed to be required to recover and/or protect listed species. Plans are published by the U.S. Fish and Wildlife Service, sometimes prepared with the assistance of recovery teams, contractors, State agencies, and others. Objectives will be attained and any necessary funds made available subject to budgetary and other constraints affecting the parties involved, as well as the need to address other priorities. Recovery plans do not necessarily represent the views nor the official positions or approval of any individuals or agencies involved in the plan formulation, other than the U.S. Fish and Wildlife Service. They represent the official position of the U.S. Fish and Wildlife Service only after they have been signed by the Regional Director or Director as approved. Approved recovery plans are subject to modification as dictated by new findings, changes in species status, and the completion of recovery tasks. The cost and time required to achieve recovery are presented as estimates because it is uncertain which of the tasks identified will be selected, the degree to which they will be implemented, and how effective each will be. LITERATURE CITATION: U.S. Fish and Wildlife Service. 1991. Cui-ui Chasmistes cuius) Recovery Plan (2nd revision). Portland, Oregon. pp. Additional copies may be purchased from: Fish and Wildlife Reference Service 5430 Grosvenor Lane, Suite 110 Bethesda, Maryland 20814 Telephone: 301/492-6403 Or 800/582-3421 The fee for the plan varies depending on the number of pages of the Plan. 1 a le ( , ACKNOWLEDGEMENTS The Cui-ui Recovery Team is grateful to: Dr. John Emlen, U.S. Fish and Wildlife Service - Seattle; Bob Young, U.S. Bureau of Reclamation - Sacramento; Dr. Don Frevert, U.S. Bureau of Reclamation - Denver; and Chester Buchanan, U.S. Fish and Wildlife Service - Reno for their valuable assistance throughout the development of the Cui-ui Recovery Plan. Members of the Cui-ui Recovery Team prepared this recovery plan. The team was composed of the following individuals: Tom Strekal, Team Leader U.S. Bureau of Reclamation Carson City, Nevada James J. Cooper Nevada Division of Environmental Protection Carson City, Nevada Jim Curran Nevada Department of Wildlife Fallon, Nevada Dr. W. yr-Minckley Arizona State University Tempe, Arizona G. Gary Scoppettone U.S. Fish and Wildlife Service Reno, Nevada Dr. Gary Vinyard University of Nevada, Reno Reno, Nevada Paul Wagner Pyramid Lake Fisheries Sutcliffe, Nevada II s a Costs: ($000's) Year Nee&Il Need 2 Need 3 NeehiA Need 5 Total 1992 250 150 100 280 0 780 1993 2,280 320 100 280 100 3,080 1994 3,420 220 100 280 100 4,120 1995 3,250 220 100 280 0 3,850 1996 3,250 220 100 390 0 3,960 1997 3,200 220 500 280 0 4,200 1998 3,200 70 100 280 0 3,650 1999 3,100 70 100 280 0 3,550 2000 3,100 70 100 280 0 3,550 2001 3,100 70 100 390 0 3,660 2002 100 70 100 280 0 550 2003 100 70 100 280 0 550 2004 100 70 100 280 0 550 2005 100 70 100 280 0 550 2006 100 70 100 390 0 660 2007 100 70 100 280 0 550 2008 100 70 100 280 0 550 2009 100 70 100 280 0 550 2010 100 70 100 280 0 550 2011 100 70 100 390 0 660 2012 100 70 100 280 0 550 Recovery Cost 29,250 2,400 2,500 6,320 200 40,670 Date of Recovery: Delisting could be initiated in 2012 if recovery criteria have been met. iv PREFACE The Regional Director, Region 1, U.S. Fish and Wildlife Service, Portland, Oregon re- established the Cui-ui Recovery Team in March 1989. Its mission was to update or revise the Cui-ui Recovery Plan. The Team decided after reviewing recently collected biological, chemical and hydrological data, and the requirements of Endangered Species Act as amended in 1988, that the plan needed an extensive revision. The Team's revision (second) offers a quantifiable recovery objective (based upon probabilistic analysis of simulated cukui response to various hydrologic conditions using computer models) with site-specific tasks which, if implemented, are expected to achieve recovery (i.e., eventual delisting) of cui-ui. S 4 TABLE OF CONTENTS DISCLAIMER ........................................................................................................................................................ ACKNOWLEDGEMENTS .................................................................................................................................. ii EXECUTIVE SUMMARY OF THE RECOVERY PLAN FOR CUI-UI ....................................................... iii PREFACE ................................................................................................................................................................ LIST OF FIGURES ............................................................................................................................................. viii I. INTRODUCTION 1 A. Description 1 B. Distribution ..................................................................................................................................... 3 1. Historical .................................................................................................................. 3 2. Recent ....................................................................................................................... 3 3. Current ..................................................................................................................... 3 C. Life History and Habitat ............................................................................................................... 5 1. Lake Habitat .......................................................................................................... 5 2. River Habitat .......................................................................................................... 5 3. Spawning .................................................................................................................. 6 4. Fecundity .................................................................................................................. 7 5. Growth, Survival and Longevity ......................................................................... 8 6. Population Size ....................................................................................................... 8 7. Food .......................................................................................................................... 8 8. Genetics .................................................................................................................. 9 D. Reasons for Listing ....................................................................................................................... 9 E. Recent Conservation Measures .................................................................................................. 10 1. Recovery Plans and Recovery Team ............................................................... 10 2. Tribal Fishery ....................................................................................................... 11 3. Hatchery Operations .......................................................................................... 11 4. Marble Bluff Dam, Marble Bluff Fish Facility, and Pyramid Lake Fishway .................................................................................................................. 12 5. Stampede Reservoir ............................................................................................. 12 6. Spawning Run Management ............................................................................... 13 7. Research: life history, population dynamics, genetics, and habitat ........... 14 8. Regulation of Newlands Project Water Diversions ......................................... 15 9. Benefits of Conservation Measures .................................................................. 16 F. Future Conservation Measures .................................................................................................. 17 1. Truckee-Carson-Pyramid Lake Settlement Act ............................................... 17 2. Cui-ui Research .................................................................................................. 17 3. Pyramid Lake Nutrient Loading Study ............................................................ 17 4. Management Actions .......................................................................................... 17 vi G. Recovery Strategy ....................................................................................................................... 18 1. Secure and Maintain Habitat ............................................................................ 18 2. Research ............................................................................................................... 19 3. Operate Cui-ui Hatchery .................................................................................... 19 4. No Translocation .................................................................................................. 20 5. Use Computer Models ......................................................................................