7056

• UCREFRP Catalog Number: 7056
• Author: Archer, D. L. and H. M. Tyus.
• Title: Yampa River Colorado Squawfish Spawning Study.
• USFW Year: 1984.
• USFW - Doc Type: Salt Lake City, Utah.
• Copyright Material: NO

TABLE OF CONTENTS

L i-st of Tabl es...'. ....... .. ._. .... ... . .. ...... .. . .... .. ... .. . .. .... . . .... i;

Lis t 0 f Fig u re s . ... . . . . . . . ... . . . ... " . . . ... . . '. . . . . . . ... . . . . . . . . . . . ... . . . . . . . . . i ; ;

INTRODUCTION......................................................... .'.. .-..'

.,

DESCRIPTION OF STUDY AREA........................................l

METHODS. .'. . . . . . . . . ... . . . . . . . . . . . . . . . . . . . . . . . . ... . . ... . . . ... . . . . ". . . . . . . ... . .4

RESULTS AND DISCUSS ION.. .. .. . . . . .. . .. . . . . . . .. . .. . .. .. .. . . . .. . . .. .6

Movement and Mi grati on. ... ., . . . . . ... . . . . . . . . ... . . . . . . . ... . . . . . . . . . . . . . . . .6

Rad; ote 1 emetry . . . . .-. . . . ._ . . . . . . . . . . . . . . . . . . . . '. . . . . . . III III . . . III . . .6

Collections-Recaptures.... ......... ....~..............~.... ~6

Oi sc-uss; on. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Spawn; n9. . . . . . . . III III . . . . . .'. . .'. . . . . . . . . . . . . . . . . . III . . . . . . . . .'. . . . III . . . . .17

Spawning Fish Collected. ... ............... ..................17

Spawning. Habitat........................................... .19

Larvae-Young Colorado Squawfish..................................26

La rv a 1 Surveys...._.................... '. . . . . . . . . . . . III . . . . . . . . III . . . 26

Young-of-theYear (VOY) Colorado squawfish..................28

CONCLUS IONS. . . . . . . . . . . . . . . . ,. . . . . . . . . . . . . . . .' III . . . . . . . III III . . . .. . . . '. . . . .32

ACKNOWLEDGEMENTS. . . . .. . .... . . .. . .. .. . . . . .. . .. ... . . .. . . . .. . . . . . . . .32

LITERATURE CITED................................................. 33