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

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19

Table 6. Lipid content values (percent dry weight) of age-O
Colorado squawfish of three initial sizes
subjected to three feeding regimes while being
held under simulated winter temperatures for
various lengths of time.

============================================================

Fish Size, Feeding
Regime

Day 0

Small, pellet-fed 21.64
(20-23)b
6c

Small, starved

Small, brine-
shrimp-fed

Medium, pellet-
fed

21.6
(20-23)
6

21.6
(20-23)
6

25.3d
(23-26)
6

Medium, starvedc 25.3d
(23-26 )
6

Medium, brine-
shrimp-fed

25.3d
(23-26)
6

Large, pellet-fed 39.9
(38-43)
11

Large, starved 39.9
(38-43)
11

Large, brine-
shrimp-fed

39.9
(38-43)
11

Length of Exposure to
winter Temperatures

Day 70

18.5
(18-19)
3

12.0
(11-13)
3

18.3
(15-21)
4

11.1
(10-12)
2

35.9
(34-40)
5

36.6
(35-38)
3

31. 6e
(26-37)
3

Day 140

12.7
(12.5-13)
2

18.5
(18-19)
3

9.5
(9-10)
2

27.9
(27-28)
3

26.6
(26-28)
3

Day 210

12.6
(12-13)
5

13.8
(13-14)
3

12.9
(12-14)
4

20.0
(17-25)
3

23.2
(19-28)
8

19.2
(18-22)
5

dMean
bRange
cSample size
dDay 0 lipid content values of medium fish cannot be validly
compared to lipid content values for days 70, 140, and 210.
eLipid content values calculated on day 99.