MICHIGAN (Cont. ) 



Rifle River Area; began October 1952, continuing; $377; Howard Cowing, 

 Leader. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



46. Black River Lamprey - Rainbow Trout Research. 



In conjunction with operation of the Black River barrier to block spawning 

 run of sea lannpreys, studies are being conducted to find its effectiveness as a 

 barrier to rainbow run. A nnanagement program is being developed for the rain- 

 bow run based on age and growth studies, observations on extent of spawning 

 above barrier, and exploitation by anglers. 



Black River, Mackinac County; began 1946, continuing; $3,886; Thomas M. 

 Stauffer, Leader; reports available. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



47. Hooking Mortality Experiments on Brook Trout. 



Under experimental conditions the relative mortality of brook trout, caught 

 by flies and by bait or artificial lures other than flies, will be determined and 

 the results tested statistically. 



Various trout streams in State; began May 1950, continuing; $1,782; D. S. 

 Shetter, Leader; reports available. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



48. Autopsy of Brook Trout from Hooking Loss. 



Post mortem exanriination of trout from hooking experiment is made to de- 

 termine cause of death. 



Various trout streams; began June 1952, continuing; $594; L. N. Allison, 

 Leader; reports available. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



49. Parasites and Diseases of Fish. 



Macro- and microscopic examination is made of sick fish in hatcheries with 

 recommendations for treatment. Study and identification of fish parasites and 

 diseases is conducted on a statewide basis. 



Statewide; began 1942, continuing; $2,320; L. N. Allison, Leader; reports 

 available. 



Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



50. Check List of Fish Parasites in Michigan. 



Preparation and maintenance of a host-parasite-distribution list of parasites 

 found in fish from Michigan waters is under way. 



Statewide; began June 1942, continuing; $2, 784; L. N. Allison, Leader. 

 Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



51. Development of Fish Cultural Station for Experimental Work. 



Search for a possible site with adequate water supply and other necessary 

 attributes, together with plans for personnel and equipment needed, is under way. 

 Began 1952, continuing; $891; A. S. Hazzard, Leader. 

 Address inquiries to: Institute for Fisheries Research, as in No. 1 above. 



52. Occurrence of Furunculosis in Rainbow Trout from Great Lakes. 



The incidence and origin of furunculosis is being investigated in "wild" lake 

 run rainbows specifically from Lake Huron into the East Branch of the Au Gres 

 River where disease was first reported. Histological examination of preserved 

 kidneys and cultures of fresh material is made when available. 



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