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Faculty of Science
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Department of Botany and Zoology
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Masters Degrees (Botany and Zoology)
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Now showing items 1-20 of 61

2014-12-31 Influence of polliniser position and honeybee colony distance in the set and quality of deciduous fruit in the Western Cape

Ramongalo, Boipelo Kgomotsego (Stellenbosch : University of Stellenbosch, 2010-12)

ENGLISH ABSTRACT: Most modern deciduous fruit cultivars are self-incompatible, and require polliniser trees to be planted in the orchard to provide the pollen necessary for cross-pollination, fertilization and fruit set. ...
An analysis of the Cordylus Polyzonus complex (Reptilia : Cordylidae) in the South-Western Cape

Badenhorst, N. C. (Stellenbosch : University of Stellenbosch, 1990-03)

Mouton and Oelofsen (1988) suggested that melanistic cordylid populations in the southwestern Cape represent relict, cold-adapted populations which evolved under adverse climatic conditions during the Last Glacial Period, ...
Aspects of the thermal ecology of the group-living lizard, Cordylus cataphractus : a spatial and temporal analysis

Truter, Johannes Christoff (Stellenbosch : University of Stellenbosch, 2011-03)

ENGLISH ABSTRACT: Thermal ecology is a central theme in reptilian biology because of the thermodynamic rate dependence of virtually all biological processes in these ectothermic animals. Thermoregulation includes active ...
Avian assemblages of invasive Australian Acacia thickets in the Western Cape

Rogers, Andrew M. (Andrew Munro) (Stellenbosch : Stellenbosch University, 2012-03)

ENGLISH ABSTRACT: Human-modified habitats form increasingly large components of landscapes, threatening biodiversity and creating challenges for conservation. In some cases altered habitats form entirely novel ecosystems ...
Biodiversity risk assessment of South Africa’s municipalities

Gerber, Liezel (Stellenbosch : University of Stellenbosch, 2005-12)

South Africa is one of the most biodiverse countries in the world and even with conservation initiatives in place continues to face biodiversity loss. There is a need to prioritise areas for conservation as resources for ...
Biology of the oleander mealybug, Paracoccus burnerae (Brain) (Hemiptera: Pseudococcidae)

Johnson, Todd (Stellenbosch : University of Stellenbosch, 2010-12)

ENGLISH ABSTRACT:Chapter 1 - Mealybugs are tiny, soft-bodied insects which constitute the second largest scale insect family Pseudococcidae (Downie & Gullan 2004). The family comprises approximately 2000 species in 300 ...
Cellular stress responses to cadmium contamination as measure of sensitivity in intertidal molluscan species

Schoeman, Werner (Stellenbosch : University of Stellenbosch, 2007-03)

The ability of various molluscan species to accumulate toxicants such as cadmium from natural waters in quantities that are many orders of magnitude higher than background levels are well-known. This phenomenon ...
The comparative cranial osteology of the South African Lacertilia (reptilia: Squamata)

Van den Worm, Johan H. (Stellenbosch : Stellenbosch University, 1998-03)

ENGLISH ABSTRACT: There has been a long-standing need to systematically analyze and classify South African fossil Lacertilia. Although extensive assemblages of fossil lizard and amphibian material from Langebaan on the ...
Comparative phylogeographic patterns among selected indigenous and introduced Collembola on Marion Island

Myburgh, Marike (Stellenbosch : Stellenbosch University, 2006-04)

ENGLISH ABSTRACT: Marion Island is situated approximately 2600 km southeast of Cape Town and is the larger of the two islands that comprise the Prince Edward Island group. During past glaciation events, Marion was partially ...
A comparison of biomarkers in assessing the combined effects of pesticide mixtures on non-target soil invertebrates

Gola, Nontuthuzelo Pearl (Stellenbosch : University of Stellenbosch, 2004-12)

ENGLISH ABSTRACT: Agricultural environments are usually contaminated with mixtures of antropogenically introduced chemicals as a result of pesticide spraying, which can affect beneficial, nontarget soil invertebrates, ...
Contributions to knowledge of some Southern African fossil sites and their fossils

Van Dijk, D. E. (Stellenbosch : University of Stellenbosch, 2001-03)

The fossil sites and fossils reported here range from the Archaean to the Recent. Information is presented on the circumstances of the discovery of some fossil sites in Southern Africa. A number of fossil sites, some of ...
The development of the ethmoidal region of Ascaphus truei (Stejneger)

Baard, E. H. W. (Ernst Hendrik Wolfaardt) (Stellenbosch : University of Stellenbosch, 1982-12)

ENGLISH ABSTRACT:This study deals with the development of the ethmoidal region of Ascaphus truei Stejneger with special interest to the development of the nasal sacs, the diverticulum medium and the Jacobson's organ. ...
Ecological relationships between the armadillo lizard, Cordylus cataphractus, and the southern harvester termite, Microhodotermes viator

Shuttleworth, Cindy (Stellenbosch : University of Stellenbosch, 2006-12)

The role of the southern harvester termite, Microhodotermes viator, and several climatic parameters in the distribution of the group-living lizard, Cordylus cataphractus, was investigated. Microhodotermes viator is considered ...
The effect of arbuscular mycorrhizal colonisation on the C economy, growth and nutrition of young grapevines

Mortimer, Peter Edward (Stellenbosch : University of Stellenbosch, 2004-04)

ENGLISH ABSTRACT: Arbuscular mycorrhizal (AM) C-costs in grapevines were investigated. Since both dormant vines and AM colonisation rely on stored C for initial growth, AM colonisation costs would therefore compete with ...
The effect of brood and queen pheromones, as well as the colony environment, in the success of Apis mellifera capensis social parasites

Hanekom, Marc C. (Stellenbosch : University of Stellenbosch, 2007-03)

Honeybee queens typically inhibit the reproductive development of workers in the colony. However, African, Apis mellifera scutellata, honeybee queens seem to have little effect on neighbouring A. m. capensis honeybee ...
The effects of long-term exposure to cadmium on the earthworm Eisenia Fetida (Oligochaeta) : an investigation of the development of genetic metal resistance

Voua otomo, Patricks (Stellenbosch : Stellenbosch University, 2006-12)

ENGLISH ABSTRACT: The development of potential genetically based resistance to cadmium (Cd) after long-term exposure to this metal at a sublethal concentration, was investigated in earthworm specimens belonging to the ...
The effects of phosphorus (P) deficiency on growth and nitrogen fixation of Virgilia trees from the Cape Floristic Region (CFR)

Magadlela, Anathi (Stellenbosch : Stellenbosch University, 2013-03)

ENGLISH ABSTRACT: The aim of this study was to determine how P nutrition affects biological nitrogen fixation (BNF) via effects on the N2-fixing bacteria in the nodules of Virgilia species native to the Cape Floristic ...
Evaluating the toxic effects of industrial waste from a historic landfarming site using bioassays

Van Wyk, Mia (Stellenbosch : Stellenbosch University, 2011-12)

ENGLISH ABSTRACT: Landfarming is a widely used method for the disposal of contaminants in the petrochemical industry. It involves ploughing the contaminants into the top soil layer allowing biological breakdown. A historically ...
Evaluation of the suitability of responses on various organisational levels in terrestrial Oligochaeta to determine species sensitivity relationships

Fourie, Frana (Stellenbosch : Stellenbosch University, 2011-03)

ENGLISH ABSTRACT: Species differ in their sensitivities to toxicants and these differences are exploited in ecological risk assessment methods such as species sensitivity distributions (SSDs). The most commonly used endpoints ...
Genetic population structure of spiny lobster Palinurus delagoae in the south-western Indian Ocean, and the evolutionary history of Palinurus

Gopal, Keshni (Stellenbosch : Stellenbosch University, 2007-03)

ENGLISH ABSTRACT: This study investigated the evolution of the genus Palinurus at the higher and lower taxonomic levels. The population genetics of the spiny lobster, Palinurus delagoae, was investigated by making use ...