9313

• UCREFRP Catalog Number: 9313
• Author: Burdick, B. D., J. Flair, M. Lloyd and B. Scheer.
• Title: Native and Nonnative Fish Use of Two Gravel-Pit Ponds Connected to the Upper Colorado River at 29-5/8 Road Near Grand Junction, Colorado.
• USFW Year: 1997.
• USFW - Doc Type: Project number CAP-6-GP,
• Copyright Material: NO

Table 4. Relative abundance of fishes collected from Gardner and Hotspot ponds
with the three different gear types, April, June, and July 1996.
Refer to Appendix C; Tables C.1.-C.3. for breakdown of relative
abundance and CPUE of fishes collected with each gear type.

Common Name
No.
fish Electrofishing
of Percentage
Composition
No. of
fish Trap Nets
Percentage
Composition Trammel Nets
No. of Percentage
fish Composition Totals
No. of Percentage
fish Composition
Native
flannelmouth sucker 0 99 52.1 91 47.9 190 100
bluehead sucker 0 1 50.0 1 50.0 2 100
roundtail chub 0 18 60.0 12 40.0 30 100
Colorado squawfish 0 11 55.0 8 45.0 19 100
Normative
black bullhead 48 8.3 449 78.1 78 13.6 575 100
common carp 292 75.5 68 17.6 27 7.0 387 100
largemouth bass 52 57.8 36 40.0 2 2.2 90 100
white sucker 13 2.7 320 66.1 151 31.2 484 100
black crappie 8 4.5 164 93.2 4 2.3 176 100
bluegill 15 15.0 83 83.0 2 2.0 100 100
smallmouth bass 0 1 50.0 1 50.0 2 100
northern pike 0 0 1 100.0 1 100
walleye 0 1 100.0 0 1 100
channel catfish 1 9.1 7 63.6 3 27.3 11 100
green sunfish 17 16.0 83 78.3 6 5.7 106 100
Hybrid sucker
white sucker X
flannelmouth sucker 1 25.0 2 50.0 1 25.0 4 100
white sucker X
bluehead sucker 1 14.3 5 71.4 1 14.3 7 100
bluehead sucker X
flannelmouth sucker 0 0 0 0 0
TOTAL 448 1.348 389 2.185
recaptured from Gardner Pond and 196 fishes initially marked in Hotspot Pond were
recaptured from Hotspot Pond (Appendix D; Tables D.1.-D.3.).
Mark and recapture data revealed that some species moved between the two
ponds via the connection channel of each pond and the river. Thirty-three fish
that were initially captured and marked in Hotspot Pond were later recaptured in
Gardner Pond; 29 fish that were initially captured and marked in Gardner Pond
were recaptured in Hotspot Pond (Appendix D; Tables D.1.-D.3.). Mark and
recapture data indicated that nonnative fishes moved the most between the two
ponds. Common carp, largemouth bass, white sucker, bluegill, and black crappie
all moved from one pond to the other sometime between April and July. White
sucker moved the most--39 moved between the two ponds whereas only six adult
largemouth bass moved between the two ponds. Only one native fish, the roundtail
chub, was observed to move between the two ponds. Of the 23 roundtail chub
captured, and marked from Gardner Pond, three fish were later captured in Hotspot
Pond. No fish was recaptured more than three times, and only two white sucker
were recaptured three times.
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