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 2.-FIELD STUDIES ON LARVAL RAZORBACK SUCKER IN CANYONLANDS NATIONAL PARK AND GLEN
CANYON NATIONAL RECREATION AREA- FISH COLLECTIONS IN THE COLORADO RIVER INFLOW TO LAKE POWELL,
UTAH, 1993. Species codes: TS = threadfin shad Dorosoma petenense, RS = red shiner Cyprinella lutrensis, CP = common carp
Cyprinus carpio, CH = Gila sp., SS = sand shiner Notrapis stramineus, FH = fathead minnow Pimephales prome/as, CS = Colorado
squawfish Ptychocheilus lucius, SD = speckled dace Rhinichthys osculus, NM = unidentified nonnative minnow, WS = white sucker
Catostomus commersoni, BH = bluehead sucker Catostomus discobolus, FM = f1annelmouth sucker C. latipinnis, RZ = razorback
sucker Xyrauchen texanus, BB = black bullhead Ameiurus me/as, CC = channel catfish /cta/urus punctatus, GS = green sunfish
Lepomis cyanellus, BC = black crappie Pomoxis nigromacu/atus. 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 10m2, SE).

20-22 JUNE (20 L T AND 8 SE SAMPLES)
RS 2593 191 1612 63 36 7 15 3 444 2149 43.0 444
CP 3616 20 3411 166 19 3615 105.2 1
SS 2015 173 1493 2 1 346 1669 6.7 346
FH 1996 67 1665 44 20 1976 45.6 20
CS 6 6 6
NM 6995 3764 3231 6995 167.2
INS 3 2 1 3 0.1
BH 2 1 1 2 0.1
FM 2 1 1 2 0.1
RZ 15 13 2 15 0.4
BC 22 6 14 22 0.4
TOTAL 17265 4223 11626 311 63 6 15 3 616 16446 617
3-6 AUGUST (33 L T SAMPLES AND 0 SE SAMPLES)
TS 1 1 1 <0.1
RS 3335 273 2341 420 172 77 46 4 3335 29.0
CH 1 I 1 1 < 0.1 I

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