Some time was devoted to a study of fish spoilage and the use of trawls 

 to take fish. 



Lake Ontario 



Routine examination of the commercial catch of whitefish in eastern 

 Lake Ontario was continued in 1955. The collection is now adequate to permit 

 an analysis to determine the factors affecting the production of the fishery, which 

 is presently the only one of consequence in Lake Ontario. 



In 1955 the first recoveries of lake trout planted by the Province of 

 Ontario and the State of New York were made. These fish show a fast rate of 

 growth and a considerably higher recovery is anticipated in 1956. 



Algonquin Park 



In Algonquin Park the creel census continued to provide information on 

 angling success and the effects of management techniques. While less heavily 

 fished lakes are maintaining their good fishing, lake trout angling continues to 

 decline in Opeongo. Restocking with marked hatchery fish has not proved 

 effective. 



Speckled lake trout hybrids have been successfully introduced into at 

 least one lake and should provide attractive fishir^ in the coming year. 



A tagging study of Opeongo bass showed that the population was ^arse 

 and that individuals ranged widely throughout the lake during the summer. An 

 analysis of the creel census material collected from 1939 to 1954 showed that 

 bass reproduction and fry survival was seriously reduced in colder summers 

 and that the low production of bass could be ascribed primarily to temperature 

 and secondarily to the small spawning stock present. 



Factors influencing lake and speckled trout spawning and egg survival 

 continued to receive some attention. Studies of the nutrient balance in lakes 

 were also continued. 



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