ILLINOIS (Cont. ) 



9. Life History and Ecology of the Warmouth, Chaenobryttus coronarius. 



This is a study of the ecological life history of the warmouth with the objective 

 of determining its suitability as a companion species with largemouth bass in ponds. 



Farm ponds in central Illinois; began 1948, indefinite; $900; Weldon Larimore, 

 Leader. 



Address inquiries to: Dr. Weldon Larimore, Assistant Aquatic Biologist, 

 Natural Resources Building, Urbana, 111. 



10. The Development of Fish Management Practices for the Small, Warm-water 

 Streams of Illinois. 



This is an intensive investigation of the fish populations of a few snnall 

 streams in the Vermilion River drainage to determine the ecological factors 

 which influence stream fishes. Artificial manipulation of some populations has 

 given information on the importance of competition among the different species. 



Department of Conservation cooperating; Vermilion County; began 1950, 

 indefinite; $10,500; Weldon Larimore, Leader; reports available. 



Address inquiries to: Weldon Larimore, as in No. 9 above. 



11. The Role of Predators in Fisheries Management. 



A study of the predation on pond fish populations by piscivorous fishes and 

 fish-eating birds is being conducted on ponds throughout the State. 



Department of Conservation cooperating; began 1951, indefinite; $1,000; 

 Leonard Durham, Leader. 



Address inquiries to: Leonard Durharri, Research Assistant, Natural Re- 

 sources Building, Urbana, 111. 



Southern Illinois University 



1. Strip Mine Waters. 



There are extensive areas of stripped land in Southern Illinois which usually 

 include numerous water areas. With a better understanding of the physio-chemical 

 characteristics of these waters it may be possible to develop management tech- 

 niques for these waters. The study includes such considerations as pH, specific 

 conductance, thermal stratification and dissolved oxygen concentrations. 



Sport Fishing Institute and Department of Conservation cooperating; Southern 

 Illinois area with ennphasis on the Pyatt stripped area; began July 1953, indefi- 

 nite; $1,000; William M. Lewis, Leader. 



Address inquiries to: Cooperative Fisheries Research Laboratory, South- 

 ern Illinois University, Carbondale, 111. 



2. Survey of the Fishes of the Big Muddy River. 



The Big Muddy is one of the principal rivers in Southern Illinois. Over a 

 3-year period investigations of the Illinois Division of Fisheries, the Illinois 

 Department of Public Health, and the Cooperative Fisheries Research Laboratory 

 of Southern Illinois University have attempted to ascertain the water quality pic- 

 ture on the Big Muddy River and to relate this to the existing fish population. The 

 present phase of the study relates to an analysis of the fish population of the river. 



Department of Conservation cooperating; Big Muddy River; began March 1951, 

 to close April 1954; Williann M. Lewis, Leader. 



Address inquiries to: Cooperative Fisheries Research Laboratory, as in 

 No. 1 above. 



3. Determining the Stomach Contents of the Largemouth Bass Without Sacrificing 

 the Specimen. 



In field activities involving the use of electro-fishing equipment the largemouth 

 is particularly vulnerable. This offered an excellent opportunity to study the 

 feeding habits of the bass, but a method of determining the stomach contents of 



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