Electrof i&hing survey 30 May 1991 Page 11 



field data sheets. 



Job 6. Presentation of Results 



Results from this project were included in a talk presented at the 29th annual 

 meeting of the Illinois Chapter of the American Fisheries Society in Urbana, Illinois on 6 

 March 1991, and were presented at a meeting of fishery biologists and environmental 

 engineers concerned with the relationships between water quality and the status of fish 

 populations in the Upper Illinois Waterway in Springfield on 9 April 1991. The general 

 increase in relative weight of 5 species of fish, including 4 sport species, from 1982 to 

 1985 was good news for the fishery managers and water quality managers, as was the 

 appearance of substantial numbers of sauger in the catch, starting in 1979. However, 

 recent declines in relative weights of the same species, including sauger, prompted the 

 Illinois Department of Conservation (IDOC) to call the meeting in Springfield, which was 

 attended by Dr. Sparks and Mr. K. Douglas Blodgett from the Illinois Natural History 

 Survey, and by representatives from the Illinois Environmental Protection Agency, the 

 Cooperative Fisheries Unit at Southern Illinois University, and the Metropolitan Water 

 Reclamation District of Greater Chicago. The information on relative weights and 

 sauger catch that was presented at these meetings is summarized below and in the 

 accompanying figures. 



Relative Weight. Wr. The standard length-weight relationships used for comparison with 

 the values from the Upper Illinois River were taken from sources cited in Murphy, Willis 

 and Springer (1991) and listed in their Table 1: Stephen (1978) for carp, Anderson (1980) 

 for channel catfish and smallmouth bass. Brown and Murphy (in press) for white bass, 

 and Wege and Anderson (1978) for largemouth bass. 



