7273

• UCREFRP Catalog Number: 7273
• Author: Prewitt, C. G., E. J. Wick and D. E. Snyder.
• Title: Population and Habitat Monitoring Program for the Endangered Humpback Chub ‎(
• USFW Year: 1978.
• Copyright Material: NO

Table 11. Total numbers and percentage composition of fishes collected at each trend zone sampling site (all
habitats combined) in the Gunnison River between Whitevattr and the Redlands Diversion, Colorado,
13 and 14 August 1977.
Collection Site a: A B C D E F G
Date (day): 13 14 14 14 14 14 14
Time: 2-4 PM 10-11 AM 12 noon 1-2 P M 4-5 PM 5-6 PM 6-7 PM
Water Temperature (C): 25 20-21 21 25.5 25 22
b
Habitats Sampled
: beef bde be ace cbf cf be
Length Group (mm TL)c: 20 < < 20 < < 20 5 20 < _ -s 20 -? 20 < is 20
Total Fish Collected: 11 206 106 648 - 64 - 638 - 38 - 26 - 224
X Compogitiond:
Cyprinus carpio - * - 1 - - - * - - - - - -
Gila robusta - 19 - 41 - 78 - 4 - 3 - 42 - 2
Notropis lutrensis - * - 7 - - - * - 3 - - -
Notropis stramineus 18 3 2 14 - - - 2 - 3 - - - 2
Pimephales promelas 82 62 98 29 - 17 - 90 - 82 - 46 - 94
Rhinichthys osculus - 2 - 6 - 3 - 2 - 11 - 8 - 1
Catostomus commersoni - - - * - - - - - - - - - -
Catostomus discobolue - 11 - 2 - 2 - 1 - - - 4 - 1
Catostomus lati ip nnls - 1 - - - - - - - - - - - -
Ictalurus melas - - - - - - - * - - - - - -
Lepomis c anellus - * - - - - - * _ - -
a. See maps included in this report for location of collection sites.
b. Key to generalized habitat types: a- backwater, b- pool, c- shoreline, d- chute channel, e- riffle, f- rust. W
c. Larvae and juveniles less than or equal to 20 mm TL (=20) were probably spawned within about five weeks of
the date of collection. Specimens greater than 20 mm TL (20 -) include older larvae and young-of-the-
year juveniles as well as older juveniles and adults.
d. * -0.5%; - - no specimens collected.