Table 37 (concluded) 



Illinois 

 River 



Upper Mississippi 

 River 



Species 



1876- 1950- 1876- 1944- 

 1903 1977 1903 1971 



White crappie, Pomoxis annularis , S 

 Black crappie, Pomoxis nigromaculatus , S 

 Crystal darter, Ammocrypta asprella , F 

 Western sand darter, Ammocrypta clara , F 

 Mud darter, Etheostoma asprigene , F 

 Rainbow darter, Etheostoma caeruleum , F 

 Bluebreast darter, Etheostoma camurum , F 

 Bluntnose darter, Etheostoma chlorosomum , 

 Iowa darter, Etheostoma exile , F 

 Fantail darter, Etheostoma flabellare , F 

 Least darter, Etheostoma microperca , F. 

 Johnny darter, Etheostoma nigrum , F 

 Orangethroat darter, Etheostoma 



spectabile , F 

 Banded darter, Etheostoma zonale , F 

 Yellow perch, Perca flavescens , S 

 Logperch 



Percina caprodes , F 

 Blackside darter, Percina maculata , F 

 Slenderhead darter, Percina phoxocephala , 



F " 



River darter, Percina shumardi , F 

 Sauger, Stizostedion canadense , S 

 Walleye, Stizostedion vitreum , S 

 Freshwater drum, Aplodinotus grunniens , C 

 Banded sculpin, Cottus carolinae, F 



x* 



Total number of species present 

 (excluding x*) 



109 



92 



90 85 



Number of species present in early 



period, not present in recent period 

 (excluding x*) 



-28 



•18 



Number of species present in recent 

 period, not present in early 

 period (excluding x*) 



+11 



+13 



Sheet 4 of 4 



115 



