PARASITOLOGY 



Fish parasites, and their effect on the abundance of important fish are being 

 studied by one scientist. The current phase of this programme is one of surveying 

 the parasites which occur throughout Ontario by examining specimens submitted by 

 the general public and specimens collected by research and management units 

 across the Province during field operations. 



LAKE PRODUCTIVITY 



The research programme dealing with lake productivity was authorized in 1964 

 but full-time staffing was not possible until 1965. Nevertheless, an analysis of data, 

 accumulated up to 1965 provided an excellent first step towards a system of 

 classifying lakes in terms of their capacity to produce pounds of fish. A journal 

 paper entitled "A method of estimating the potential fish production of North 

 Temperate Lakes" was issued and has attracted favourable comment from a 

 number of countries. The basis for the method is a combined expression of 

 measurements of average depth and total dissolved solids. If the method is found 

 applicable to a broader range of Ontario lakes (34 lakes were used in the first 

 analysis), it will be a cheap and very useful tool in fisheries management. 



Administrative Duties 



The headquarters staff performed administrative duties, ensured coordination 

 between the several research units of the Section and encouraged coordination 

 between the Section and other research agencies in Ontario and other countries. 

 This function greatly increases the effective amount of research effort applied to 

 fisheries in Ontario beyond that amount actually undertaken by the Province. 

 Staff again participated in the programme of the Great Lakes Fishery Commission, 

 particularly the sea lamprey control programme. 



FORESTRY SECTION 



The forestry research programme is integrated between six units with head- 

 quarters at the Southern Research Station, Maple, and five units located in the 

 major forest regions of the Province. The programme is described under Tree 

 Breeding, Site, Reforestation, Wood Quality, White Pine Blister Rust, Mensuration, 

 Statistics and Economics, and the regional silvicultural research units: Northern, 

 Central, South Central, Southwestern and Southeastern. 



Tree Breeding 



The long-term projects on white pine, aspen-poplars and hard pines were 

 continued. Controlled pollinations with spruce, started in the previous year, also 

 continued. 



WHITE PINE 



Resistance to blister rust and weevil and satisfactory growth form and growth 

 rate were the main objectives. 



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