7203

• UCREFRP Catalog Number: 7203
• Author: Osmundson, D. B. and L. R. Kaeding.
• Title: Colorado Squawfish and Razorback Sucker Grow-Out Pond Studies as Part of Conservation Measures for the Green Mountain and Ruedi Reservoir Water Sales
• USFW Year: 1989.
• USFW - Doc Type: Final Report.
• Copyright Material: NO

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Table 1. Frequency of occurrence (%) and mean number per fish for items
in stomachs of Colorado squawfish from Fish Chalet Pond. Values are
calculated only from fish with food present in the stomach. t = trace
(a mean value < 0.05); adt = adult; lar - larvae; aqt = aquatic; ter =
terrestrial; UI = unidentified.
1986
1987
1988
9/26 10/10 11/10 12/12 3/10 4/15 5/8 6110 7/9 8/12 9/29 6/15
Sample size (n) 39 51 40 22 14 20 22 20 19 20 20 3
Percent empty
Stomachs only 30.8 19.6 62.5 40.9 28.6 5.0 4.5 10.0 26.3 15,0 0
5 7
66
Stom, and intestine 7,7 13.7 40.0 27,3 21.4 5.0 0.0 5.0 15.8 5.0 .
0.0 .
33.3
No. with stom. food 27 41 15 13 10 19 21 18 14 17 19 1

Fi
h S 0.0 0.0 6.7 0.0 0.0 0.0 0.0 5.6 28.6 5.9 0.0 100.0
s
spp. x 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0.1 0.3 0.1 0.0 1
0
(SD) (-) (-) (0.3) (-) (-) (-) (-) (0.2) (0.5) (0.2) (-) .
(-)
Crustacea % 3.7 0.0 20.0 84.6 0.0 0.0 33.3 11.1 0.0 0
0 0
0 0
0
Cladocera x 0.1 0.0 3.7 29.7 0.0 0.0 20.5 21.9 0.0 .
0
0 .
0
0 .
0
0
& Copepoda (SD) (0.6) (-) (8.1) (28.1) (-) (-) (37.5) (72.9) (-) .
(-) .
(-) .
(-)
S 0,0 0.0 0.0 0.0 10.0 0.0 0.0 0.0 0.0 0.0 0.0 0
0
Isopoda x 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0.0 0,0 0.0 .
0.0
(SD) (-) (-) (-) (-) (0
3)
Ins eta .
Diptera
Chironomidae & % 96.3 92.7 40.0 0.0 100.0 94.7 52.4 88.9 46.7 47,1 21.1 0.0
Ceratapogonidae x 3.6 2.4 0.8 0.0 3.0 1.9 2.9 9.3 1.7 1.1 0.3 0.0
adult b imago (SD) (2.8) (2.0) (1.4) (-) (1.8) (0.9) (4.1) (8.1) (2.8) (1.7) (0.6) (-)
% 18.5 2.4 0.0 30.8 50.0 26.3 9.5 0.0 0.0 0.0 0.0 0.0
Chironomidae lar x 3.2 t 0.0 1.0 4.4 1,9 0.1 0.0 0.0 0,0 0.0 0.0
(SD) (11.6) (0.2) (-) (1.9) (8.3) (6.9) (0.3) (-) (-) (-) (-) (-)
% 0.0 0.0 6.7 0.0 0.0 15.8 0.0 0.0 0.0 0.0 0.0 0
0
Ceratopogonidae lar x 0,0 0.0 0.1 0.0 0.0 0.2 0.0 0.0 0.0 0.0 0.0 .
0.0
(SD) (-) (-) (0.3) (-) (-) (0.5) (-) (-) (-) (-) (-) (-)

Dolichipodidae adt %
x 0.0
0.0 0.0
0.0 0.0
0.0 0.0
0.0 0.0
0.0 0.0
0.0 9.5
0.1 0.0
0.0 6.7
0.1 0.0
0.0 10.5
0.1 0.0
0.0
(SD) (-) (-) (-) (-) (-) (-) (0.5) (-) (0.3) (-) (0.3) (-)
Z 0,0 0.0 0.0 0.0 0.0 10.5 0.0 0.0 0.0 0.0 0.0 0,0
Dolichipodidac lar x 0,0 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 0,0 0.0 0.0
(SD) (-) (-) (-) (-) (-) (0.3) (-) (-) (-) (-) (-) (-)
% 3,7 0.0 0.0 0.0 0.0 5.3 0.0 0.0 0.0 5
9 10.5 0.0
Diptera adt x t 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.0 .
0.1 0.1 0.0
(SD) (0.2) (-) (-) (-) (-) (0.2) (-) (-) (-) (0.5) (0.3) (-)
% 0.0 4,9 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 21.1 0.0
Diptera lar x 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 1.4 0.0
(SD) (-) (0.2) (-) (-) (-) (-) (-) (-) (-) (-) (3.6) (-)
S 0,0 7.3 0.0 0.0 0.0 0.0 0.0 0.0 6.7 52.9 52.6 0.0
Bphemeroptera adt x 0.0 0.1 0.0 0.0 0.0 0.0 0.0 0.0 0.1 0.7 1.7 0.0
(SD) (-) (0.3) (0.3) (0.7) (2.5) (-)
Hemiptera S 7.4 4.9 0.0 0.0 0.0 0.0 14.3 0.0 6.7 0
0 84.2 0.0
Corixidae x 0.1 0.1 0.0 0.0 0.0 0.0 0.7 0.0 0.1 .
0.0 1.3 0.0
(SD) (0.3) (0.2) (-) (-) (-) (-) (2.0) (-) (0.3) (-) (0.9) (-)
% 3.7 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
Miridae adt x t 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0,0 0.0 0.0
(SD) (0.2) (-) (-) (-) (-) (-) (-) (-) (-) (-) (-) (-)

Hemiptera UI S
x 0.0
0
0 2.4 0.0 0.0 0.0 0.0 14.3 0.0 0.0 11.8 0.,j 0.0
. t 0.0 0.0 0.0 0.0 0.1 0.0 0.0 0.2 0.0 0.0
(SD) (-) (0.2) (-) (-) (-) (-) (0.4) (-) (-) (0.5) (-) (-)
Hymenoptera
Formicidae adt S 0.0 17.1 0.0 0.0 0.0 0.0 0.0 11.1 0.0 11.8 0.0 0.0
x 0.0 0.2 0.0 0.0 0.0 0.0 0.0 0.2 0.0 0.1 0.0 0.0
(SD) (-) (0.5) (-) (-) (-) (-) (-) (0.5) (-) (0.4) (-) (-)

Ichneumonidae adt S
x 3.7
t 0.0
0
0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
. 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
(SD) (0.2) (-) (-) (-) (-) (-) (-) (-) (-) (-) (-) (-)

Chalcidae adt %
x 0.0
0
0 2.4 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
. t 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0 0.0
(SD) (-) (0.2) (-) (-) (-) (-) (-) (-) (-) (-) (-) (-)
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