9465

• UCREFRP Catalog Number: 9465
• Author: Burdick, B.
• Title: Monitoring and Evaluating Various Sizes of Domestic-Reared Razorback Sucker Stocked in the Upper Colorado and Gunnison Rivers
• USFW Year: 2003.
• USFW - Doc Type: 1995-2001.
• Copyright Material: NO

TABLE OF CONTENTS
LIST OF TABLES ..........................................................v
LIST OF FIGURES ..........................................................v
LIST OF APPENDIX TABLES AND FIGURES .................................. vi
ACKNOWLEDGMENTS .................................................... ix
EXECUTIVE SUNRVIARY .................................................... x
INTRODUCTION ..........................................................1
General .............................................................1
Summary of Razorback Sucker Experimental and Augmentation Stocking Plans ...... 4
Purpose and Objectives ................................................. 6
Study Area ...........................................................7
METHODS ................................................................9
Fish Propagation and Stocking ............................................ 9
Fish Sampling .......................................................11
RESULTS AND DISCUSSION ............................................... 13
Stocking of Razorback Sucker ........................................... 13
Rationale and Strategy ........................................... 13
General .......................................................15
CHAPTER 1: Size of Fish Stocked Versus the Number Recaptured ............... 18
Total Number Recaptured ........................................ 18
Year-Classes & Family Lots ....................................... 19
Size of Fish Recaptured .......................................... 20
CHAPTER 2: Dispersal of Stocked Fish ................................... 23
CHAPTER 3: Habitat Use of Stocked Fish ................................. 33
CHAPTER 4: Identify Ways to Reduce Mortality of Stocked Fish ................ 34
Stock Larger Fish ............................................... 34
Site Acclimation ................................................ 36
Floodplain Stocking ............................................. 37
Flow Conditioning ..............................................37
Spring vs. Fall Stocking .......................................... 38
CHAPTER 5: Evaluate Different Gear Types for Sampling Stocked Fish ........... 40
CONCLUSIONS ...........................................................41
RECOMMENDATIONS ..................................................... 42
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