9552

• UCREFRP Catalog Number: 9552
• Author: U.S. Fish and Wildlife Service.
• Title: Management Plan for the Big-River Fishes of the Lower Colorado River Basin
• USFW Year: 2004.
• USFW - Doc Type: amendment and supplement to the Bonytail, Humpback chub, Colorado pikeminnow, and Razorback sucker Recovery Plans.
• Copyright Material: NO

1
1

1
1
1
1
1
1
1

TABLE OF CONTENTS
TABLE OF CONTENTS ii
APPROVAL/SIGNATURE PAGE iv
DISCLAIMER PAGE ~ ~
CITATION FOR THIS MANAGEMENT PLAN vi
ACKNOWLEDGEMENTS y-I
EXECUTIVE SUMMARY vm
INTRODUCTION 1
COLORADO RIVER BASIN 1
BIG-RIVER FISHES 3
MANAGEMENT STRATEGIES 5
KEY FACTORS USED IN DEVELOPING MANAGEMENT STRATEGIES 5
MANAGEMENT STRATEGIES OVERVIEW 6
STRATEGY DESCRIPTION 8
GENETIC CONCERNS 11
CONDITIONING METHODS 12
MANAGEMENT PLAN SUBUNITS 13
GRAND CANYON SUBUNIT 13
LAKE MEAD SUBUNIT 17
LAKE MOHAVE SUBUNIT 2~
LAKE HAVASU SUBUNIT 26
PARKER-IMPERIAL SUBUNIT 29
Ga,A RIVER SUBUNrr 32
FUTURE NEEDS 35
REFERENCES CITED 38
LIST OF APPENDICES 46
APPENDIX I -SUMMARY OF RECOVERY GOALS FOR BONYTAIL, HUMPBACK CHUB, RAZORBACK SUCKER,