9533

• UCREFRP Catalog Number: 9533
• Author: Muth, R. T. and E. Wick.
• Title: Field Studies on Larval Razorback Sucker in Canyonlands National Park and Glen Canyon National Recreation Area, 1993-1995.
• USFW Year: 1997.
• USFW - Doc Type: Fort Collins.
• Copyright Material: NO

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TABLE 5.-FIELD STUDIES ON LARVAL RAZORBACK SUCKER IN CANYONLANDS NATIONAL PARK AND GLEN
CANYON NATIONAL RECREATION AREA- FISH COLLECTIONS IN THE MIDDLE COLORADO RIVER, UTAH (SHAFER
CANYON, LATHROP CANYON, AND GOOSENECK AREA), 1994. Species codes: RS = red shiner Cyprinella lutrensis, CP =
common carp Cyprinus carpio, CH = Gila sp., SS = sand shiner Notropis stramineus, FH = fathead minnow Pimepha/es promelas,
CS = Colorado squawfish Ptychocheilus lucius, WS = white sucker Catostomus commersoni, BH = bluehead sucker C. discobolus,
FM = flannelmouth sucker C. latipinnis, RZ = razorback sucker Xyrauchen texanus, US = unidentified sucker. L T = floating
quatrefoil light trap; SE = 1.6-mm mesh, 1 X 3-m seine; GM = geometric mean; CPE = catch per effort <number of fish/1 0 h, L T, or
10 m2, SE).

2-4 JUNE (9 L T AND 3 SE SAMPLES)
R5 1329 146 652 327 204 704 10.8 625 27.0
CP 0.1
55 149 127 21 118 0.4 31 2.0
FH 57 2 38 17 31 0.2 26 1.7
C5 2 2 2 0.2
ws 3 3 3
BH 17 17 17 1.8
FM 24 24 24 1.5
TOTAL 1582 148 818 371 2 242 898 684

16-17 JUNE (8 L T AND 3 SE SAMPLES)
R5 162 16 10 4 132 19 1.2 143 3.5
CH 10 2 8 2 0.2 8 0.2
55 105 81 24 76 6.1 27 0.6
FH 5955 7 5936 10 5854 461.9 101 1.3
C5 1 1 1 <0.1
ws 1 1 1 0.1
I BH 255 255 220 26.8 35 1.1

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