7888

• UCREFRP Catalog Number: 7888
• Author: Minckley, W. L.
• Title: Native Fishes And Natural Aquatic Habitats In U.S. Fish And Wildlife Service Region II West Of The Continental Divide, A Review of Population and Habitat Status and Evaluation of Survival Potentials for Native Freshwater Fishes, with Recommendations.
• USFW Year: 1985.
• USFW - Doc Type: \
• Copyright Material: NO

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TABLE OF CONTENTS

EXECUTIVE SUMMARY.
TABLE OF CONTENTS. .
LIST OF TABLES .
LIST OF FIGURES. .
INTROUCTION . .
STUDY AREA . .

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16
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25
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29
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31
38
42
45

METHODS . . . . . . . . . .
Electrofishing . . . .
Trammel Netting. . . . . . . . . .. ....
Tissue Sampling, PIT Tagging, and Radio Telemetry.
Compilation of Data. . . . . . . . .

RESULTS AND DISCUSSION . . . . . . . . . .
Distribution and Abundance
Rare Fish. . . . . . . . . .
Distribution . . . . . . . . . . .
Colorado Squawfish . . . . . . .
Roundtail Chub . .. ... .. .....
Sightings . . . . . . . . . . . . . . . . . .
Radio Telemetry . . . . . . . . .
Movement and Habitat Use . . . . .
Spawning Areas .. . . . . . . . . . . . .
Movement Barriers . . . . . . . . . . . . . . . .
Radio Tracking Difficulties . . . . . .
1993 Schedule . . . . . . . . . . . .. ........

APPENDIX I (Electrofishing CPUE data) .
APPENDIX II (1991-1992 Flow data) . . .
APPENDIX III (Individual Colorado squawfish movements)

APPENDIX IV (Colorado squawfish original capture locations) .

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