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Theses and Dissertations (Zoology and Entomology): Recent submissions
Now showing items 21-40 of 374
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(University of Pretoria, 2023)The naked mole-rat (Heterocephalus glaber) is a subterranean mammal which occurs in colonies of up to 60 individuals. The animals have a distinct dominance hierarchy with breeders at the top specifically dominant breeding ...
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(University of Pretoria, 2023-09-29)Dung beetles are ecosystem engineers that provide a plethora of ecosystem services such as nutrient cycling, waste removal and parasite suppression. Recent evidence suggests that dung beetles rely on symbiotic gut bacteria, ...
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(University of Pretoria, 2023)Subterranean mammals inhabit and thrive over a range of environmental aridities and, as such, are exposed to varying water availability, which they obtain through their diet of underground geophyte storage organs. Evolutionary ...
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(University of Pretoria, 2023-10)Lead poisoning poses a significant global risk to wildlife and is widespread among scavenging raptors. The plight of African vultures calls for urgent evaluation of environmental toxins that may threaten their future ...
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(University of Pretoria, 2023)With an increased demand for alternative, inexpensive and sustainable protein sources, there is an increasing interest in edible insects around the world. Tenebrio molitor, the yellow mealworm a species of darkling beetle, ...
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(University of Pretoria, 2023)The rate of human-induced disturbance over the last century constitutes a major threat to wildlife species’ distribution, behaviour, physiological function, and overall fitness as populations struggle to respond to rapid ...
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(University of Pretoria, 2023)The fall armyworm, Spodoptera frugiperda, an invasive noctuid pest, has rapidly spread across continents, posing a significant threat to agriculture. This thesis delves into the intricate relationship between S. frugiperda ...
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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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African swine fever virus maintenance and transmission dynamics in the sylvatic Ornithodoros vector (University of Pretoria, 2017)African swine fever (ASF) is a highly contagious and fatal haemorrhagic viral disease of domestic pigs caused by a large, DNA arbovirus with a genome ranging from 170 to 190 kbp in length, the African swine fever virus ...
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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 ...
Now showing items 21-40 of 374