8234

• UCREFRP Catalog Number: 8234
• Author: Marsh, P. C. and M. E. Douglas
• Title: Predation by Introduced Fishes on Endangered Humpback Chub and Other Native Species in the Little Colorado River, Arizona
• USFW Year: 1997
• USFW - Doc Type: Transactions of the American Fisheries Society
• Copyright Material: YES

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Table 1. Numbers of fishes collected in the White River. Colorado. above Kenney Reservoir basin (river kilometers 176.9-184.6) from
1983-1985, and below Taylor Draw Dam (river kilometers 115.5-167.8) from 1983-1985, and 1989 and 1990. Sampling methods included
combinations of drift nets (d), electrofishing (e), gill nets (g), and seining (s) as indicated. * = <0.5%.
Above reservoir Below dam
Year 1983 1984 1985 1983 1984 1985 1989 1990
Sampling methods e,s e,s e,s e,s e,s e,s d.g,s d.g.s
Native
Roundtail chub 186 463 128 1562 1609 902 758 3377
5.0 2.7 1.3 20.0 8.2 2.4 3.2 8.4
Colorado squawfish 1 1 1 1 5 7 223 110
0.9
Speckled dace 1226 3469 1704 2452 4235 12629 600 720
33.1 20.1 17.3 31.4 21.4 33.7 2.6 1.8
Bluchead sucker 1138 8237 2467 2346 4509 6607 47 2
30.8 47.8 25.1 30.0 22.9 17.7
Flannelmouth sucker 1032 2985 3232 1222 3508 7792 2513 5249
27.9 17.3 32.8 15.6 17.8 20.8 10.7 13.0
Mountain whitefish 15
* 13
* 34
* 2
* 18
* 25
* 33
*
Mottled sculpin 4
* 12
* 3
* 1
* 1
* 3
*
Total native 3602 15167 7548 7618 13868 27956 4169 9491
Non-native
Red shiner 56 116 18 14 792 133 11591 18406
1.5 0.7 * * 4.0 * 49.5 45.6
Common carp 17 24 3 78 136 205 1136 2683
OS * * 1.0 0.7 0.5 4.8 6.6
Fathead minnow 12 1920 2101 25 4828 8769 6140 7944
* 11.1 21.3 * 24.5 23.4 26.2 19.7
Black bullhead 2 7 2 48 1604
* * * * 4.0
Channel catfish 11 5 7 76 67 98 20 2
* * * 0.9
Rainbow trout 170 254 6 1
1.7 0.7
Brown trout 9
*
Green sunfish 13
* W
*
Largemouth bass 1
*
Black crappie 1 300 143
* 1.3
Total non-native 96 2065 2299 195 5831 9461 19263 30864
Total fish 3698 17232 9847 7813 19699 37417 23432 40355