Upper Midwest Environmental Sciences Center
2003 Report
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Table 4.6 |
Mean catch-per-unit-effort and (standard error) for fish collected by day electrofishing in La Grange Pool of the Illinois River using stratified random sampling during 2003. The statistics under ALL pertain to unbiased means over all strata sampled by this gear (as indicated by nonmissing entries below and by Table 2.6). See Methods for definitions of catch-per-unit-effort and standard error. Scientific names for the species listed can be found in Table 1. |
| Common name | ALL | BWCS | MCBU | SCB |
| Spotted gar | 0.04 | 0.14 | 0.03 | |
| (0.02) | (0.09) | (0.03) | ||
| Longnose gar | 0.12 | 0.17 | 0.03 | |
| (0.06) | (0.08) | (0.03) | ||
| Shortnose gar | 0.31 | 0.76 | 0.14 | 0.44 |
| (0.09) | (0.29) | (0.06) | (0.21) | |
| Bowfin | 0.12 | 0.46 | 0.03 | |
| (0.04) | (0.16) | (0.03) | ||
| Goldeye | 0.01 | 0.03 | ||
| (0.01) | (0.03) | |||
| Skipjack herring | 0.93 | 0.08 | 1.25 | 0.75 |
| (0.21) | (0.05) | (0.30) | (0.18) | |
| Gizzard shad | 48.99 | 37.35 | 52.86 | 55.61 |
| (9.06) | (11.44) | (12.32) | (9.86) | |
| Threadfin shad | 1.39 | 1.70 | 1.22 | 2.11 |
| (0.25) | (0.55) | (0.30) | (0.49) | |
| Goldfish | 0.20 | 0.16 | 0.22 | 0.17 |
| (0.10) | (0.06) | (0.14) | (0.07) | |
| Grass carp | 0.31 | 0.70 | 0.11 | 1.06 |
| (0.08) | (0.29) | (0.05) | (0.39) | |
| Red shiner | 0.13 | 0.32 | 0.06 | 0.28 |
| (0.04) | (0.10) | (0.04) | (0.14) | |
| Common carp | 7.31 | 14.32 | 4.42 | 11.95 |
| (0.95) | (1.95) | (1.14) | (2.46) | |
| Carp x goldfish hybrid | 0.01 | 0.03 | ||
| (0.01) | (0.03) | |||
| Silver carp | 1.11 | 2.81 | 0.50 | 0.77 |
| (0.38) | (1.40) | (0.19) | (0.21) | |
| Bighead carp | 0.03 | 0.11 | 0.14 | |
| (0.01) | (0.05) | (0.11) | ||
| Silver chub | 0.06 | 0.08 | 0.03 | |
| (0.06) | (0.08) | (0.03) | ||
| Golden shiner | 0.36 | 1.24 | 0.06 | 0.03 |
| (0.22) | (0.85) | (0.04) | (0.03) | |
| Emerald shiner | 6.89 | 2.38 | 8.58 | 6.47 |
| (1.27) | (1.62) | (1.72) | (2.13) | |
| River shiner | 0.02 | 0.03 | 0.11 | |
| (0.02) | (0.03) | (0.09) | ||
| Spottail shiner | 0.06 | 0.08 | 0.06 | |
| (0.03) | (0.06) | (0.04) | ||
| Silverband shiner | 0.20 | 0.03 | 0.28 | 0.03 |
| (0.16) | (0.03) | (0.22) | (0.03) | |
| Bullhead minnow | 0.48 | 1.54 | 0.11 | 0.19 |
| (0.20) | (0.74) | (0.07) | (0.07) | |
| Creek chub | 0.01 | 0.03 | ||
| (0.01) | (0.03) | |||
| River carpsucker | 0.66 | 1.16 | 0.50 | 0.36 |
| (0.13) | (0.30) | (0.15) | (0.14) | |
| Quillback | 0.03 | 0.05 | 0.03 | |
| (0.02) | (0.05) | (0.03) | ||
| Smallmouth buffalo | 2.70 | 5.54 | 1.58 | 3.69 |
| (0.50) | (0.90) | (0.64) | (0.89) | |
| Bigmouth buffalo | 2.37 | 8.00 | 0.28 | 2.42 |
| (0.59) | (2.24) | (0.16) | (0.88) | |
| Black buffalo | 0.16 | 0.51 | 0.64 | |
| (0.07) | (0.26) | (0.21) | ||
| Golden redhorse | 0.01 | 0.03 | ||
| (0.01) | (0.03) | |||
| Shorthead redhorse | 0.24 | 0.46 | 0.17 | 0.06 |
| (0.08) | (0.16) | (0.09) | (0.04) | |
| Unidentified sucker | 0.86 | 3.00 | 0.11 | 0.17 |
| (0.46) | (1.77) | (0.05) | (0.09) | |
| Black bullhead | 0.02 | 0.05 | 0.03 | |
| (0.01) | (0.04) | (0.03) | ||
| Yellow bullhead | 0.07 | 0.27 | 0.03 | |
| (0.03) | (0.13) | (0.03) | ||
| Brown bullhead | 0.03 | 0.11 | 0.03 | |
| (0.02) | (0.06) | (0.03) | ||
| Channel catfish | 3.55 | 4.27 | 3.39 | 2.00 |
| (0.42) | (0.71) | (0.55) | (0.40) | |
| Flathead catfish | 0.39 | 0.38 | 0.39 | 0.39 |
| (0.11) | (0.13) | (0.15) | (0.12) | |
| Pirate perch | 0.01 | 0.05 | ||
| (0.01) | (0.04) | |||
| Blackstripe topminnow | 0.03 | 0.05 | 0.03 | |
| (0.02) | (0.04) | (0.03) | ||
| Western mosquitofish | 0.33 | 0.81 | 0.14 | 0.53 |
| (0.17) | (0.62) | (0.09) | (0.32) | |
| Brook silverside | 0.09 | 0.27 | 0.03 | 0.03 |
| (0.04) | (0.15) | (0.03) | (0.03) | |
| White perch | 0.03 | 0.03 | 0.03 | |
| (0.02) | (0.03) | (0.03) | ||
| White bass | 2.35 | 2.24 | 2.36 | 2.80 |
| (0.36) | (0.59) | (0.47) | (0.39) | |
| Yellow bass | 0.23 | 0.65 | 0.08 | 0.08 |
| (0.08) | (0.29) | (0.05) | (0.05) | |
| Green sunfish | 0.15 | 0.59 | 0.03 | |
| (0.06) | (0.22) | (0.03) | ||
| Warmouth | 0.04 | 0.16 | 0.03 | |
| (0.02) | (0.08) | (0.03) | ||
| Orangespotted sunfish | 0.57 | 2.03 | 0.06 | 0.19 |
| (0.14) | (0.54) | (0.06) | (0.08) | |
| Bluegill | 6.42 | 21.65 | 1.11 | 1.42 |
| (1.23) | (4.54) | (0.58) | (0.38) | |
| Redear sunfish | 0.05 | 0.11 | 0.03 | |
| (0.03) | (0.08) | (0.03) | ||
| Green x bluegill sunfish | 0.01 | 0.11 | ||
| (0.00) | (0.05) | |||
| Smallmouth bass | 0.01 | 0.03 | ||
| (0.01) | (0.03) | |||
| Largemouth bass | 1.24 | 4.35 | 0.17 | 0.14 |
| (0.37) | (1.43) | (0.09) | (0.07) | |
| White crappie | 0.73 | 2.51 | 0.08 | 0.56 |
| (0.14) | (0.52) | (0.06) | (0.14) | |
| Black crappie | 0.44 | 1.59 | 0.03 | 0.22 |
| (0.10) | (0.37) | (0.03) | (0.08) | |
| Johnny darter | 0.01 | 0.05 | ||
| (0.01) | (0.04) | |||
| Logperch | 0.02 | 0.08 | ||
| (0.02) | (0.08) | |||
| Sauger | 0.14 | 0.05 | 0.17 | 0.14 |
| (0.06) | (0.04) | (0.08) | (0.07) | |
| Freshwater drum | 8.25 | 14.35 | 6.31 | 3.50 |
| (1.24) | (3.22) | (1.32) | (0.77) |
Sampling strata:
BWCS - Backwater, contiguous, shoreline
MCBU - Main channel border, unstructured
SCB - Side channel border
September 27, 2004
Page Last Modified: April 17, 2018