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Theses and Dissertations (Zoology and Entomology): Recent submissions
Now showing items 1-20 of 345
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(University of Pretoria, 1976)Read abstract in the document
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(University of Pretoria, 2023-07)The aim of this PhD was to investigate the ecology and management of B. distincta (Pentatomidae) associated with macadamia orchards in South Africa. In chapter 1, the available literature of the life history traits of ...
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(University of Pretoria, 2023)Gonipterus scutellatus species complex is a cryptic species that feeds on Eucalyptus leaves. Both the adult and larval stages cause high levels of defoliation. Gonipterus sp. n. 2 is the species present in South Africa and ...
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(University of Pretoria, 2023)Invasive species are considered a major biological threat to the planet, causing losses on economic and environmental fronts. Lantana camara is one of the worst invasive plant species, globally and in South Africa, with ...
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(University of Pretoria, 2023)Lanternfish (Myctophidae) are abundant mesopelagic fishes in the Southern Ocean ecosystem and represent a large dietary component for sentinel marine predators, such as seals and seabirds. Their contribution to diets of ...
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(University of Pretoria, 2023)Gonipterus sp. 2 is a pest of economic importance to South Africa as it threatens the sustainability of eucalypt plantations. The adult beetles and larvae cause damage to Eucalyptus spp. through defoliation. There are ...
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(University of Pretoria, 2023)Carnivore species coexistence is shaped by niche partitioning that developed over evolutionary time through behavioural responses and adaptations to interspecific competition and risk. Minimising lethal and sub-lethal ...
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(University of Pretoria, 2023)Predicted climatic changes throughout the southern African region are likely to affect the distribution of ecological zones, significantly impact agricultural yield, and influence the timing of the flowering season. Climate ...
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(University of Pretoria, 2023)Pressure is being placed on the agricultural sector to supply an ever-growing demand for food as the population continues to increase globally. This is further complicated by a continues decrease in pollinators needed for ...
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(University of Pretoria, 2022)Food security, as far as horticultural production is concerned, requires research into pest control methods at all stages of production. Tephritid fruit flies are among the most serious agricultural pests worldwide, owing ...
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(University of Pretoria, 2022)Field studies that systematically evaluate the transmission dynamics, reservoir hosts, and genotype diversity of trypanosome parasites are scanty in sylvatic ecologies in sub-Saharan Africa. Such studies are important for ...
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(University of Pretoria, 2022-03-23)How social group cohesion is maintained in cooperatively breeding species has been the subject of a significant body of research. In many cooperatively breeding species, subordinate individuals are prevented from breeding ...
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(University of Pretoria, 2021)The olfactory behavioural ecology of large solitary carnivores is still poorly understood. Meanwhile, these species represent challenging cases in conservation and management. They are frequently involved in conflicts with ...
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(University of Pretoria, 2014-07)Fire is an important disturbance in many biomes throughout the world and plays a major role in savannas, where it affects the composition and structure of vegetation, which in turn structures faunal assemblages. Higher ...
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(University of Pretoria, 2014-03)Craniometrics is a very reliable and effective tool for studying the difference in animal morphology. Previously, traditional craniometrics were conducted with the aid of calipers in two dimensional format (2D). Such ...
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(University of Pretoria, 2014-11-30)Prior to this in-depth phytosociological classification and biogeographical study, the only other intense floristic study focussing on all plant species done specifically on Mariepskop was the work by Van der Schijff and ...
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(University of Pretoria, 2021)This study investigated variation in activity, relative abundance, and body condition of Blasius’s horseshoe bat (Rhinolophus blasii) in relation to temperature, season, rainfall, and wind speed across seven years at the ...
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(University of Pretoria, 2014-03)The roles of phylogeny and body size in avian heat stress physiology, and how they interact to set the upper limits to heat dissipation capacity, are largely unexplored. Determining thermal end points and maximum capacity ...
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(University of Pretoria, 2014-02)Inter-individual variation in behaviour, or as it has now come to be known, personality, has been shown to affect many different components of fitness in animals. A concept that used to be thought of as background ‘noise’ ...
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(University of Pretoria, 2021-04)Southern right whales (Eubalaena australis) in South Africa have been extensively studied since 1979 through annual photo-identification surveys. The resulting database revealed an increased rate of reproductive failure ...
Now showing items 1-20 of 345