Browsing Biological Sciences by Issue Date
Now showing items 1-20 of 724
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Intersex in four South African racial groups in Durban.
(1970)Chapter I The ontogeny of sex development is introduced and a definition of the intersexual state is given. A resume of intersexes recorded in South Africa is presented together with figures showing the increased demand ... -
Radical veld improvement in South Africa with special reference to the Highland sourveld of Natal.
(1970)No abstract available. -
Automatic classification and ecological profiles of South-Western Transvaal Highveld grassland.
(1973)Abstract available in PDF file. -
Bionomics and control of the sugarcane insect Numicia viridis Muir (Homoptera: Tropiduchidae)
(1973)Numicia viridis Muir (Homoptera : Tropiduchidae) is an indigenous southern African insect which was 'described in 1931 from specimens collected in Pondoland and Natal. In 1962 it became of economic importance when it ... -
Aspects of the biology and ecology of the estuarine fishes of the east coast of South Africa.
(1974)No abstract available. -
The development of cultivated dryland grass pastures for livestock production in the high rainfall areas of Rhodesia.
(1974)No abstract available. -
Phytosociology of the Namib Desert Park, South West Africa.
(1976)The geology, topography, soils and climate of the Namib Desert Park south of 23 S. Lat. are described briefly. The vegetation was investigated using the techniques of the Zurich - Montpellier school of phytosociology. ... -
Reproduction and population ecology of the blue wildebeest Connochaetes taurinus taurinus in Zululand.
(1977)A two-year study was made of the blue wildebeest Connochaetes taurinus taurinus in Zululand, Natal. Aspects investigated included age determination methods, growth and condition, reproductive physiology, habitat ... -
The Squamata (Reptilia) of the Orange Free State, South Africa.
(1977)This study deals with the three orders of Squamata (Sauria, Amphisbaenia, Serpentes) of the Orange Free State, South Africa. Following an intensive systematic survey 4 492 specimens have been examined comprising 77 ... -
Comparative studies on related free-living and pathogenic limax amoebae with particular reference to Naegleria.
(1977)Over two hundred and forty strains of limax amoeba including eight potentially pathogenic strains of Naegleria and Acanthamoeba were isolated from a variety of habitats in South Africa. The amoeboid and flagellate stages ... -
The mammals of the Transvaal.
(1978)The primary object of this study is to provide a checklist of the mammals occurring within the Transvaal. A general biological account of each species forms the bulk of this treatise, - discussing, in order of sequence, ... -
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 ... -
On the vacuolar system in maize roots.
(1979)Root-cap cells of Zea mays L proliferate by division in the cap meristem, and subsequently differentiate and mature as they move towards the periphery of the cap, where ' they undergo autolysis and are sloughed. Vacuolar ... -
An outline of the ecology and behaviour of the red lechwe (Kobus leche leche Gray, 1850)
(1979)In a number of publications serious concern has been expressed about 'the status of lechwe in the Kwando/Linyanti/Chobe system. Concern has also been expressed about the effects of possible water extraction from the ... -
The population dynamics of impala (Aepyceros melampus Lichtenstein) in Mkuzi Game Reserve.
(1979)The need to understand the dynamics of the impala population in Mkuzi Game Reserve arose during the early 1960's when it became clear that various factors were contributing to an overpopulation of the species in the ... -
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 ...