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Fish Reports

2006 Report

Pool 26, Upper Mississippi River 2006 Fish Collection Summary

This report is a bullet summary of the Long Term Resource Monitoring Program's (LTRMP) fish collection efforts conducted by the Great Rivers Field Station on Pool 26, Upper Mississippi River during 2006. Information on changes in fish catch over all years can be obtained from the Graphical Fish Database Browser.

• 182 fish collections were conducted using six gear types (Table 2.4), with 174 from randomly selected sites and 8 from a fixed site.

• Backwater; main channel border, unstructured; and side channel border strata received the most sampling effort (Table 2.4).

• In 2006, water levels did not greatly deviate from normal during most of the field season, and therefore did not affect sample allocations (Table 2.4; Figure 1.4).

• 27,373 fish were collected representing 53 species and 2 hybrids (Table 3.4). This total includes 7 unidentified suckers (Catostomidae) less than 130 mm long, 24 unidentified sunfishes (Centrarchidae) less than 40 mm long, and 33 unidentified minnows (Cyprinidae) less than 30 mm long.

• The LTRMP species total for Pool 26 before the 2006 season was 90; two striped mullets (Mugil cephalus) were collected, adding a new species to the Pool 26 species total, increasing the total to 91 species. (Table 3.4).

• No Illinois-listed threatened or endangered species were collected (Table 3.4).

• Other species that were collected and are noted as uncommon, rare, or probably strays from tributaries (Pitlo et al. 1995) in Pool 26 were Mississippi silvery minnow, freckled madtom, mud darter, golden redhorse, grass carp, logperch, and smallmouth bass (Table 3.4).
  
  
• Four white perch (Morone americana) X yellow bass (Morone mississippiensis) were collected in 2006.  These are the first specimens of this non-native X native species hybrid collected by the LTRMP in Pool 26.

• Mean catch-per-unit-effort and standard error for stratified random and fixed-site sampling for each stratum are shown in Pool 26 tables. Length distributions for selected species of fish are shown in Figures 1 to 17.

 

 

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Page Last Modified: April 17, 2018