Browsing Doctoral Degrees (Zoology) by Advisor "Heeg, Jan."
Now showing items 1-8 of 8
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Aspects of the biology and population dynamics of freshwater mussels in Lake Kariba and Lake McIlwaine.
(1980)Following preliminary observations in 1975 the Lake Kariba Fisheries Research Institute implemented a research program in March 1976 to investigate various aspects of the biology and population dynamics of the mussel ... -
Aspects of the ecology and exploitation of the fishes of the Kosi Bay system, KwaZulu, South Africa.
(1986)ln this study the exploitation of the fish fauna of the Kosi estuarine system by man and natural predators is described and estimates made of the off-take and its species composition. The most important ... -
The freshwater Diaptomidae (Calanoida : Copepoda) of Southern Africa.
(1990)Freshwater copepod taxonomy has been neglected in southern Africa for more than 50 years and this has placed a constraint on research on the biology and ecology of this important component of the freshwater ... -
The influence of turbidity on fish distribution in Natal estuaries.
(1984)Studies In other parts of the world have proved that turbidity affects aquatic life and work In Australia and North America has shown that the distribution of some fish species may be determined by the level of turbidity ... -
A review of the old world genera of Lauxaniidae (Diptera)
(1971)This paper presents in key form a review of the Old World genera of Lauxaniidae. Thirteen new genera are erected, three genera are placed in synonymy, four subgenera are given generic status, and one genus is transferred ... -
A revision of the genus Ancilla Lamarck, 1799 (Mollusca : Olividae : Ancillinae)
(1982)The genus Ancilla Lamarck, 1799, contains 34 valid species and subspecies; 41 names previously applied to the group are reduced to 23, and 11 new species described (Kilburn, 1977, 1980, 1981). A provisional subgeneric ... -
Studies on the biology of three species of sea urchin (Echinodermata : Echnoidea), on the South African east coast.
(1993)Ten species of shallow water echinoid are found on the subtropical east coast of South Africa. Although their distributions are patchy, the most common species, Echinometra mathaei, stomopneustes variolaris and Diadema ... -
Systematics and bionomics of the scorpions of South West Africa (Arachnida, Scorpionida)
(1978)All the taxa of scorpions previously described from South West Africa are revised and a monographic account presented with phylogenetic and biogeographic discussions and conclusions derived in terms of current concepts ...