7341

• UCREFRP Catalog Number: 7341
• Author: Valentine, J. J.
• Title: Hatchery and Laboratory Phase of the Colorado River Endangered Fishes Study.
• USFW Year: 1981.
• USFW - Doc Type: \
• Copyright Material: YES

I' ;-~

~I

1
t
I

1

I

;1
l
I
,
1
jl
~
1
I
J

J
I

I
G

,

vaJen-f/ f1e..

---

/ -If;,;/t'!;"/)",.
AS) (Iv... .
l IIIJ,
hiol,'J

u"T3lf I

Iq~J

HATCHERY AND LABORATORY PHASE OF THE
COLORADO RIVER ENDANGERED FISHES STUDY

BY

Joe Valentine
USFWS Colorado River Fishery Project

Introduction

The Colorado River Fishery Project was started in 1979 with the
sponsorship of the Water and Power Resources Service and the U.S.
Fish and Wildlife Service. Its purpose was to gather biological
information on the fishes of the Colorado River, particularly those
that were listed by the Fish and Wildlife Service as endangered or
threatened. The project is divided into two parts; the field studies
and the hatchery-laboratory studies. This presentation deals with the
latter.

The objectives of the hatchery-laboratory program are:

1. To learn how to propagate the Colorado squawfish, humpback
chub and bony tail chub.
2. To produce the fish required for laboratory studies.
3. To determine how temperature and total dissolved solids affect
these fish.
4. To determine the toxicity of trace chemicals to them.
5. To determine their habitat requirements and competition with
other species under laboratory conditions.
6. And to measure their swimming ability.

~
f'.
~

Given two years to accomplish these tasks required we use those
facilities and personnel ready and qualified to do this work. For
the most part. FWS Cooperat~ve Fishery Research Units and hatcheries were
chosen.

"
'"

!:

III