WISCONSIN (Cont. ) 



standing population and better lake habitat for more favored game species. It 

 is also hoped that heavy drum production will increase growth and fatness of 

 the now thin and slow growing drum. Presently, monthly drum samples of 

 400-500 fish are randomly selected for assessing length-weight relationships 

 of the current population throughout the year. Age and rate of growth studies 

 of the drum are conducted annually and detailed catch statistics are maintained 

 to follow ticnds in game fish and drum populations. 



Lake Winnebago; began April 1953, to close June 1958; $12,500; Thomas L. 

 Wirth, Leader; reports available. 



Address inquiries to: Thonnas L. Wirth, Wisconsin Conservation De- 

 partment, Box 358, Oshkosh, Wisconsin. 



9. Movements of Whitefish in Western Lake Superior 



A total of 1, 700 whitefish were tagged in order to study migratory habits, 

 annual growth, and seasonal distribution. One phase of the study is to deter- 

 mine whether or not present legal size regulations are suitable to the fishery. 

 All fish were tagged directly from commercial pound nets at four different 

 locations in the Apostle Island area. Fish ranged in size from 14 to 17 inches. 

 Tags used were an individually numbered streamer type attached posterior 

 to the dorsal fin with No. 49 Nylock thread. It is anticipated that an addi- 

 tional 2, 000 whitefish will be tagged during the 1957 season. 



Apostle Island area, Lake Superior; began June 1955, to close November 

 1959; $850; Russell Daly, Leader; reports available. 



Address inquiries to: Russell Daly, State Fish Hatchery, Bayfield, Wis- 

 consin. 



10. Studies of the Food Competition Between Carp, Largemouth Bass, and Blue- 

 gills 



This study is being conducted to deternnine if carp compete with large - 

 mouth bass and bluegills for the available supply of food. Samples of adult and 

 young of the year carp, largemouth bass and bluegills were sampled periodi- 

 cally throughout the summer for stomach analysis. 



Warm Water Research Station, Delafield; began April 1, 1956, to close 

 June 1958; $7,704; Arthur R. Ensing, Leader. 



Address inquiries to: Arthur R. Ensign, Warm Water Research Station, 

 Box 396, Delafield, Wisconsin. 



11. Management Studies of Carp, Largemouth Bass and Bluegill 



The relationship between carp, largemouth bass and bluegills in the lakes 

 of southeastern Wisconsin, is determined by means of studies of growth rates, 

 mortality rates, success of reproduction and the harvest of largemouth bass 

 with liberalized fishing regulations. The work done on this project in 1956 

 consisted of summarizing the work completed in 1955 and drawing comparisons 

 with the data from 1953. 



Browns Lake and the Warm Water Research Station, Delafield; began 

 Spring 1953, to close June 1957; $8,424; Donald Mraz, Leader; reports avail- 

 able. 



Address inquiries to: Donald Mraz, Warm Water Research Station, Box 

 396, Delafield, Wisconsin. 



12. Management Studies of Lake Trout in Big Green Lake 



This project was established to determine the reasons for fluctuations in 

 abundance of lake trout as well as the role of stocked fish. Natural reproduc- 

 tion and growth rates are studied. All lake trout stocked since 1953 have been 

 marked. 



145 



