No stock was available to continue the year class series of hybrids In 

 Georgian Bay during 1960. Both the 1958 and 1959 plantings of hybrids appeared 

 In cooiDerclal gear during the year and continued to demonstrate good survival, 

 growth and wide-ranging movements. Ripe males and females were taken on October 

 12 over former lake trout spawning beds and It Is presumed that spawning occurred. 



Routine commercial catch sampling In the North Channel, Georgian Bay and 

 South Bay was continued but failed to detect the long awaited arrival of a strong 

 whlteflsh year class. Such a strong. In fact record, year class appeared In the 

 Southern Lake Huron fishery, and this was carefully followed throughout the 

 season. Exploitation of this year class (1957) by commercial fishermen and pre- 

 sumably by sea lamprey was found to be extremely high. By fall good numbers of 

 the 1958 year class were growing Into the size range vulnerable to the fishing 

 gear In numbers suggestive of another strong year class. The landings produced 

 by these two year classes established a 50 year record harvest of whlteflsh for 

 this area. 



During 1960 fish management and research staffs In Ontario and elsewhere 

 on the continent began to recognize the significance of the gill net mesh size 

 selectivity studies conducted at this station, and many evidences of Its appli- 

 cation began to appear. 



Hydrographlc studies, creel census, and experimental fishing activities 

 were continued. 



Lake Erie 

 Routine commercial catch sampling is undertaken each year out of the 

 major fishing ports to provide Information of current value to management and 

 Industry and to provide the long term data series necessary for research. During 

 1960 our sampling system was modified considerably to take account of the new 

 types of gear which have appeared in recent years, and which to date have not been 

 assessed adequately. 



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