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The Long Term Resource Monitoring Program (LTRMP) completed 2,723 collections of fishes from stratified random and permanently fixed sampling locations in six study reaches of the Upper Mississippi River System during 1995. Collection methods included day and night electrofishing, hoop netting, fyke netting (two net sizes), gill netting, seining, and trawling in select aquatic area classes. The six LTRMP study reaches are Pools 4 (excluding Lake Pepin), 8, 13, and 26 of the Upper Mississippi River, an unimpounded reach of the Mississippi River near Cape Girardeau, Missouri, and the La Grange Pool of the Illinois River. A total of 59–72 fish species were detected in each study reach. For each of the six LTRMP study...
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Grass carp (Ctenopharyngodon idella) is an exotic species which was imported into the United States in 1963 to control aquatic vegetation. Individuals escaped from ponds and subsequently spread into streams in the Mississippi River basin. We have been collecting grass carp in the Illinois River since 1990, and some of our associates have also collected grass carp in other portions of the upper Mississippi River system. The presence of juveniles (some less than 20 mm long) and adults (some diploid) in our collections leads us to believe that grass carp are reproducing in the Illinois River, and their larvae are finding suitable nursery areas in back- waters. Naturalized, reproducing grass carp populations probably...
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Largemouth bass (Micropterus salmoides) are an important component of the recreational and tournament fisheries in the Illinois River. From 1992 through 1994, we tagged and released 4,507 largemouth bass. Through 1995, 652 different anglers caught and reported 1,162 (24.9%) tagged largemouth bass. Including those we recaptured, of 1,473 largemouth bass for which we had the location of recapture, 985 (66.9%) were recaptured within 1 mile (1.6 km) of their release location, indicating tagged largemouth bass usually stayed in the area they were released. Fish released along the main channel were more likely to move than those released in backwaters or sloughs, and largemouth bass translocated by tournament anglers...
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The Long Term Resource Monitoring Program (LTRMP) completed 2,378 collections of fishes from stratified random and permanently fixed sampling locations in six study reaches of the Upper Mississippi River System during 1996. Collection methods included day and night electrofishing, hoop netting, fyke netting (two net sizes), gill netting, seining, and trawling in select aquatic area classes. The six LTRMP study reaches are Pools 4 (excluding Lake Pepin), 8, 13, and 26 of the Upper Mississippi River, an unimpounded reach of the Mississippi River near Cape Girardeau, Missouri, and the La Grange Pool of the Illinois River. A total of 59–75 fish species were detected in each study reach. For each of the six LTRMP study...
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The Long Term Resource Monitoring Program (LTRMP) completed 2,221 collections of fishes from stratified random and permanently fixed sampling locations in six study reaches of the Upper Mississippi River System during 1992. Collection methods included day and night electrofishing, hoop netting, fyke netting (two net sizes), gill netting, seining, and trawling in select aquatic area classes. The six LTRMP study areas are Pools 4 (excluding Lake Pepin), 8, 13, and 26 of the Upper Mississippi River, an unimpounded reach of the Mississippi River near Cape Girardeau, Missouri, and the La Grange Pool of the Illinois River. A total of 56–70 fish species were detected in each study area. For each of the six LTRMP study...
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