MICHIGAN (Cont. ) 



6. Interrelationships of the Sea Lamprey with Other Fishes (Proj. 4). 



The objectives are to determine the role of the sea lamprey in the ecology of the 

 Great Lakes fishes and to evaluate the effect of the lannprey on the density and 

 composition of fish populations. 



* Lake Huron; Hdqtrs. : Hammond Bay Fishery Lab. , Rogers City, Mich. ; began 1950, 

 continuing; Albert E. Hall, Jr. , Leader. 

 Address correspondence to: James W. Moffett, Chief, Great Lakes Fishery Investi- 

 gations, 1220 E. Washington St. , Ann Arbor, Mich. 



7. Feeding Habits of the Sea Lamprey (Proj. 5). 



Objectives of this project are to determine the frequency and duration of feeding by 

 the sea lamprey, the effects of attacks on different species of fishes, the per- 

 centage of fatal attacks in relation to the size of predator and prey and to locality 

 of attachment, and the causative mechanisms of lethal sea lamprey attacks. 



Hdqtrs. : Hammond Bay Fishery Lab. , Rogers City, Mich. ; began 1950, to be 

 completed June 1953; Robert E. Lennon, Albert E. Hall, Jr. , Leaders. 



Address correspondence to: James W. Moffett, Chief, Great Lakes Fisheries 

 Investigations, 1220 E. Washington St. , Ann Arbor, Mich. 



3. Movements and Dispersion of Parasitic-Phase Sea Lampreys (Proj. 6). 



The objective of this project is to determine the movements and dispersal of actively 

 feeding, parasitic adult lampreys as a means of evaluating control measures taken 

 on a zonal or single-lake-basin basis. 



Lakes Huron, Michigan, and Superior; Hdqtrs. : Hammond Bay Fishery Lab. , Rogers 

 City, Mich. ; began 1950, continuing; Bernard R. Smith, Leader. 



Address correspondence to: James W. Moffett, Chief, Great Lakes Fisheries 

 Investigations, 1220 E. Washington St. , Ann Arbor, Mich. 



9. Scale Structure of Lake Trout (Proj. 8). 



The objectives are to determine the validity of the annulus as a year-mark and to 

 derive a body-scale regression curve for use in the calculation of growth. 



All available sources; Hdqtrs. : Arm Arbor, Mich. ; began January 1950, to be 



completed December 1953; Louella E. Cable, Leader. 

 Address correspondence to: James W. Moflett, Chief, Great Lakes Fisheries 



Investigations, 1220 E. Washington St. , Ann Arbor, Mich. 



10. Abundance of Small Trout in Lake Michigan and Lake Superior (Proj. 9). 



The objective is to follow annual, seasonal, and local fluctuations in the abvindance 

 of small lake trout as reflected in numbers taken in chub gill nets as a means of 

 measuring trends in the stocks and later of judging the results of attempts at 

 rehabilitation. 



Hdqtrs. : Ann Arbor, Mich. ; began May 1950, will be completed January 1954; 



Paul H. Eschmeyer, Leader. 

 Address correspondence to: James W. Moffett, Great Lakes Fisheries Investigations, 



1220 E. Washington St. , Ann Arbor, Mich. 



57 



