7785

• UCREFRP Catalog Number: 7785
• Author: Thompson, J. M.
• Title: The Role of Size, Condition, and Lipid Content in the Overwinter Survival of Age-0 Colorado Squawfish.
• USFW Year: 1989.
• USFW - Doc Type: Colorado State University,
• Copyright Material: NO

I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I
I

8

addition, the importance of food availability to the rate of
survival that I observed in this preliminary study was not
understood.
In the present investigation, I examined the role of
size, condition factor, and lipid content in the overwinter
survival of age-O Colorado squawfish. The objectives of my
study were as follows.
1. Determine the influence of size, condition factor, and
lipid content on the overwinter survival of hatchery-reared
age-O Colorado squawfish held under simulated winter
temperatures for 210 days.
2. Compare size, condition, and lipid content of wild and
hatchery-reared age-O Colorado squawfish before and after
the winter period.
3. Compare condition, lipid content, and survival of
hatchery-reared fish subjected to different feeding regimes
(dry trout pellets versus brine shrimp versus starved).
4. Estimate the amount of lipid that fish must maintain to
survive overwinter.