7124 ‎(2)‎

• UCREFRP Catalog Number: 7124
• Author: McAda, C. W. and R. S. Wydoski.
• Title: Technical Papers
• USFW Year: 1980.
• USFW - Doc Type: \
• Copyright Material: YES

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Table 2. Percentage of fish of different species in collections made with trammel nets at Echo Park (station 3J
on different dates in 1974-76, and (for 10-22 May 1975) catch per unit of effort (CPEJ.B (See Fig. 1 for locations
of station.)
Year and dates (total number of fish collected shown in parentheses)
1974 1975 1976
14-18 Nov. 25 Apr.-7 May
(89) (62)
10-22 May
(102)
Percent CPEe
5-10 July 14-16 Nov. 2-5 May
(200) (34) (141)
Catostomus latipinnis (N) 55.1 22.5 33.3 0.58 50.0 36.4 41.1
C. discobolus (N) 20.2 12.9 16.7 0.29 3.5 48.5 20.6
C. commersoni 11.2 4.8 6.9 0.12 2.0 9.1 7.8
Xyrauchen texanus (N) 3.3 9.6 1.0 0.02 - 3.0 0.7
Ptychocheilus Lucius (Nj - - - - 0.5 - 1.4
Gila. robusta (N) 1.1 6.5 11.8 0.21 13.0 3.1 6.4
Gila sp d - - 2.9 0.05 1.0 - 0.7
Cyprinus carpio 2.2 20.9 8.8 0.15 4.0 - 12.8
Ictalurus punctatus 6.7 11.3 4.9 0.09 15.5 - 4.9
I. melas - - 2.9 0.05 - - -
Salmo gairdneri - 8.1 8.8 0.15 - - 2.8
S. trutta - 3.4 2.0 0.03 0.5 3.1 0.7
eCPE =catch per unit effort; one unit of effort = 10 m of net (2.1 m deep) set for 10 h.
bN =native species.
Catches on 5-10 October 1974 (not shown) included one Colorado squawfish (no razorback suckers -; other specie s were not
counted.
dMember of the humpback chub complex
Table 3. Percentage of fish of different species in collections made with trammel nets at Castle Park (station 2J
and Lily Park (station IJ, Yampa Riuer, Colorado, on different dates in 1975. (See Fig. 1 for locations of
stations.)
Catostomus latipinnis (Nj
C. discobolus (N)
C. commersoni
Gila robusta (Nj
Gila sp b
Ptychocheilus Lucius (Nj
Cyprinus carpio
Ictalurus punctatus
I. melas
Salmo trutta
Station and dates (total number offish collected shown in parentheses)
Castle Park (station 2) Lily Park (station 1 j
11-13 July 23-28 July 31 July-3 Aug. 5-8 Aug. 30 Aug.
(97) (203) (234) (207) (42)
23.7 28.6 56.7 44.0 50.0
5.2 4.4 8.9 18.4 19.0
- 1.5 3.0 5.3 2.4
48.5 16.3 21.2 8.2 14.3
9.3 1.5 - - -
2.0 6.9 1.5 6.3 4.8
- 31.0 20.2 11.6 2.4
11.3 8.4 3.4 5.S 2.4
- 1.5 0.5 0.5 2.4
- - - - 2.4
aN =native species.
bMembers of the humpback chub complex.
station 3 during a 3-week period in May 1975 (Table 1-. abundance was not reflected in the total catch. Seven
The collections were made with electrofishing gear and razorback suckers composed 4.3% of the trammel net
trammel nets. Since more effort was expended at this catch from 25 April to 22 May-a percentage only
time than during other collection periods, relative slightly greater than that (3.0-3.3) in the fall collec-