East African Fisheries Research Organization Annual Report 1952

Several important advances have been made in our knowledge both regarding the factors which determine fertility in tropical lakes and the fish that live in them. As a result of our investigations a new theory has been put forward regarding the part played by animals in the bionomics of a lake; this theory, stated somewhat baldly, is that within certain limits the greater the number of animals in a shallow tropical lake, the greater becomes its potential fertility, and therefore the greater the number of animals it can support. The theory arises as a logical conclusion, once we accept the fact that the rate of production in such a lake is determined by the rate at which organic matter is decomposed. Bottom deposits which consist mainly of vegetable matter decompose slowly, whereas deposits which contain a high proportion of matter of animal origin decompose more rapidly. Thus the more animals in a lake, particularly animals which feed on plant material, the faster the biological cycle can proceed and the greater the density of animals it can support. This new concept will have a very profound influence on our ideas concerning the consequences of overfishing tropical waters. It also shows that efforts must be made to encourage and protect all herbivorous and detritus feeding animals, whether they be copepods, fish, or hippopotami, and whether they are of immediate economic importance or not.

Annual Report of the Game and Fisheries Department for the year ended 31st December 1952

The annual report presents information on Lake Victoria, Lake Albert (including tbe Albert Nile and associated Fisheries)-Report by Lake Albert Fisheries Officer,Lake Kyoga and Waters of Eastern Uganda-Report by Fisheries Officer, Serere. Lakes George, Edward and Waters of Western Uganda -Report by the Fisheries Officer, Kichwamba Fish Farming-Report by the Fisheries Officer, Fish Fanning,dams,crocodiles. It presents information on angaling, Trouting, Nile Perch and Ripon Falls Barbel

Filariasis research annual report 1952

This 1952 report gives details of findings in the Southern and Southern Highlands Provinces. Accordingly in this publication a return is made to the more usual method of presentation, a summary being given of work done, with detailed sectional reports.