the lamprey is not controlled. As a side product, and perhaps even more important 

 than the immediate objective, much is being learned about the patterns of character 

 inheritance in fish. Such new knowledge and techniques may one day be as impor- 

 tant in the management of fisheries as it has become in livestock, agriculture and 

 horticulture. The additional physical facilities required, primarily water supply 

 and rearing facilities, were not made available in 1962, and losses from disease 

 intensified by overcrowding greatly reduced progress. In the mass selection phase 

 of the project, a complete year class had to be discarded. Advances on the 

 theoretical level were achieved but numbers of individually selected fishes were 

 reduced by mortalities to levels where the production of practical numbers was 

 jeopardized seriously. 



LIMNOLOGY 



A new research endeavour in the field of limnology was launched in 1962. 

 This is vital to all fisheries studies which search for causes of the violent and 

 costly fluctuations in year class strength of species such as bass, walleye and white- 

 fish. The scientist in charge will co-ordinate and give needed direction to the 

 assimilation of data collected by all other research units. He is expected to develop 

 an over-all plan for the collection of data on currents, wave-action, temperature, 

 dissolved oxygen concentration, ice cover, plankton bloom and any other factors 

 v/hich may be related to the success or failure of year class strength. Such 

 co-ordination and direction is expected to provide greater efficiency and speedier 

 progress in the various fisheries projects. This research unit is also expected to 

 provide effective and productive liaison with the Great Lakes Institute which is 

 supported by our funds in its limnological research over all the Great Lakes. 



PARASITOLOGY 



The work on parasites of fishes, as yet still in a preliminary stage of develop- 

 ment, revealed so many new records of parasites on so many different species that, 

 at this time, we can only be very much impressed with our ignorance. Parasites 

 and diseases on human populations are the subjects of tremendous research 

 activities because they cause death. In fisheries they are in all probability equally 

 or more impyortant in their effect on populations. We know little, as yet, about 

 what parasites and diseases infect the important species of fish, let alone their effect 

 or their cure. 



MISCELLANEOUS 



Other headquarters staff performed administrative duties and ensured 

 co-ordination between research units of the section and between the section and 

 other agencies in Ontario and other provinces and countries. This function greatly 

 increases the effective amount of research applied to fisheries in Ontario beyond 

 the amount actually undertaken in the province. 



FORESTRY RESEARCH 



The integrated forestry research program is described below under the head- 

 ings of Silvicultural Research Units, Site, Reforestation, Tree Breeding, Quality 

 Wood, and White Pine Blister Rust Reconnaissance Surveys. 



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