Browsing Doctoral Degrees (Zoology) by Title
Now showing items 51-70 of 92
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The Holothurian fauna of Southern Africa.
(1984)The last thorough revision of the southern African holothurian fauna appeared in 1948 and since then there have been numerous additions to the fauna . A comprehensive revision of the fauna is here undertaken on the basis ... -
Host-parasitoid interactions of Eldana Saccharina (Lepidoptera: Pyralidae) in Cyperus Papyrus.
(1994)Since becoming a pest in graminaceous crops in Africa, the African sugarcane stalkborer Eldana saccharina Walker has been the subject of much study. Its very cryptic habits have precluded more commonly available control ... -
The incidence of helminths in pigs, sheep, cattle, impala and blesbok in the Transvaal.
(1980)The seasonal fluctuations in the worm burdens of pigs, sheep, cattle, impala and blesbok exposed to infestation on improved or natural pastures in the Transvaal were determined. The prevalence of infestation in pigs ... -
The influence of abiotic processes, competition and predation on the community structure of rodents and shrews.
(2012)Predation and abiotic processes rather than competition should influence the community structure of rodents and shrews with life histories characterised by high fecundity, short longevity and unstable populations. I ... -
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 ... -
Infraspecific systematics of the yellow mongoose Cynictis penicillata.
(1990)Geographic variation was analysed in morphological (colour, morphometric) and genetic (electrophoretic, chromosomal) characters in the yellow mongoose cynictis penicillata, a diurnal, colonial, burrow-dwelling viverrid, ... -
An integrated approach to the management of common reedbuck on farmland in Natal.
(1983)This study was motivated by the Natal Parks Board which has been receiving a growing number of complaints from farmers concerning reedbuck grazing of commercial crops. The reedbuck is an important conservation species, ... -
Integrated physiology and behaviour of Thallomys nigricauda along an aridity gradient.
(2008)Climate change predictions suggest that the continent most vulnerable to climate change is Africa. The impacts of potential changes which include increases in air temperatures and rainfall variability are negative with ... -
Intrinsic and extrinsic influences on African large herbivore assemblages and implications for their conservation.
(2014)Understanding the intrinsic and extrinsic influences that affect large herbivore assemblages are important for protected area managers, especially if their current rate of population decline in Africa continues. I aimed ... -
The invasive potential of the freshwater snail Radix rubiginosa recently introduced into South Africa.
(2011)Invasions of ecosystems by exotic species are increasing and they may often act as a significant driver of the homogenization of the Earth’s biota, resulting in global biodiversity loss. Moreover, the addition of exotic ... -
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, ... -
Nectar preferences of specialist and occasional avian nectarivores, and their role in the evolution of floral traits.
(2009)Our understanding of bird pollination systems has changed dramatically in the last few years. A long-standing paradigm was that hummingbirds and passerine birds select for different nectar properties in flowers ... -
On the behavioural ecology and vocal communication of the brown-headed parrot (Poicephalus cryptoxanthus)
(2002)The Brown-headed Parrot (Poicephalus cryptoxanthus) is a poorly known species inhabiting open woodland in south-eastern Africa. This study elucidates critical aspects of the species ecology and although each of ... -
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 ... -
Patterns of animal endemism in the Maputaland-Pondoland-Albany biodiversity hotspot.
(2013)The Maputaland-Pondoland-Albany (MPA) hotspot, as is the case of all such global biodiversity hotspots, has primarily been recognised based on its high floristic endemism and delimited intuitively. Boundaries of global ... -
Patterns, mechanisms and evolution of avian facultative hypothermic responses : a southern African perspective.
(2001)Recent evidence suggests that avian facultative hypothermic responses are more common than previously thought. Traditionally, several categories of avian hypothermic responses have been recognized, and are frequently ... -
Phylogeny of the Ammobatini and revision of the Afrotropical genera (Hymenoptera : Anthophoridae : Nomadinae)
(1994)The phylogeny of the Ammobatini was studied, with regard to the principles of cladistics using parsimony, and the classification is revised. It is concluded that the tribe forms a monophyletic group that comprises six ... -
Plant molluscicides for snail control in the South African context.
(1994)Despite more than half a century of international research on schistosomiasis control, this disease remains a public health concern in many Third World countries. Four to five percent of the world's population is estimated ... -
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 ... -
Population genetics of the striped-mouse, Rhabdomys Pumilio (Sparrman, 1784)
(1999)The striped-mouse, Rhabdomys pumilio, is widely distributed throughout southern Africa within a variety of habitats and rainfall regimes. It is found at sea level in the Eastern and Western Cape regions and at altitudes ...