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Theses and Dissertations (Zoology and Entomology): Recent submissions
Now showing items 61-80 of 374
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(University of Pretoria, 2013-12-18)Little information is available on the termite species in southern Africa, especially Trinervitermes trinervoides (Sjöstedt). This is an endemic, non-detrimental harvester termite that performs vital ecosystem functions ...
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(University of Pretoria, 2013-07)The diet of an animal plays a fundamental role in its ecology, and the consequence of a specific diet may be more pronounced in mammals with a specialised diet that are more reliant on a specific food type. This can have ...
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Development of efficient tools for improved surveillance of vectors of dengue and chikungunya fever (University of Pretoria, 2015)In the past 3 decades, arboviruses have become a major cause of re-emerging epidemic diseases in the world. Amongst the arboviruses, dengue and chikungunya fevers which are transmitted by Aedes spp have become more prevalent ...
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(University of Pretoria, 2015)The evidence of the effects of human mediated climate change is already evident in most ecosystems. The IPCC projects that there could be as much as a 4˚C increase in global average temperatures by the end of this century. ...
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(University of Pretoria, 2014)The present study investigates trap success, species richness, community structure, capture-recapture ratios, sex, population estimates, climatic effects, diversity, age structure, signs of reproduction, and seasonal changes ...
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(University of Pretoria, 2014)This thesis investigates a number of aspects of the biology of the East African root rat, Tachyoryctes splendens (Rüppell, 1835) and provides important information currently depauperate in the literature. These aspects ...
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(University of Pretoria, 2013)There are many factors which may influence the distribution of parasites and often parasites are not evenly distributed amongst their hosts. The development and survival of ectoparasites is usually dependent on abiotic ...
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(University of Pretoria, 2013)The study investigated the origin and diversity of the three matrilineally-defined invasive, commensal Rattus species, namely R. norvegicus, R. rattus and R. tanezumi known to occur in South Africa after routine identification ...
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(University of Pretoria, 2013)Genetic parameters such as genetic variability, gene flow, relatedness and migration were determined between two South African coastal delphinid species, Cephalorhynchus heavisidii (Heaviside’s dolphin) and Tursiops aduncus ...
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(University of Pretoria, 2013)Termites are ecosystem engineers with well documented functional roles in African savannas. However, how their importance changes across environmental gradients, such as rainfall and nutrition, is less understood. Using ...
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(University of Pretoria, 2013)The desert locust, Schistocerca gregaria (Orthoptera: Acrididae) is a destructive pest when gregarious but harmless in solitary form. Reports demonstrate the involvement of aggregation pheromones in mediating behavior of ...
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(University of Pretoria, 2015)A number of daily rhythms were investigated under different lighting conditions and the topographical arrangements of visual (rods/cones) and non-visual retinal photoreceptors (ipRGCs) determined, in the Namaqua rock mouse ...
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(University of Pretoria, 2013)No abstract
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(University of Pretoria, 2021)Currently, pangolins are the most trafficked wild mammals in the world, but due to their elusive nature, they are critically understudied. Thus, in addition to acquiring basic knowledge, there is an increased need for ...
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(University of Pretoria, 2020)Vector-borne pathogens (VBP) present a serious threat to both animal and human health globally due to their zoonotic potential. ‘One Health’ epidemio-surveillance systems that integrate human, animal, and arthropod vector ...
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(University of Pretoria, 2021-02-15)Marine mammals breeding in sympatry use resources differently depending on their time-activity budgets and prey distribution. We measured isotopic values and patterns of δ15N and δ13C in keratinous whiskers of satellite-tagged ...
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(University of Pretoria, 2020)Although rock hyrax (Procavia capensis) is an abundant species in urban areas of South Africa, limited information exists of their physiological stress response when exposed to anthropogenic disturbances. Previous endocrine ...
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(University of Pretoria, 2020)As natural habitat is lost, the need for keeping and breeding animals in zoological gardens is increasing. For animal welfare reasons and to promote health and effective breeding having as close to natural enclosures has ...
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(University of Pretoria, 2020-08)The biology of apex predators provides a valuable means of monitoring changes within the Southern Ocean. Knowledge of these animals is often incomplete as relatively little is known about the ecological roles of many marine ...
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(University of Pretoria, 2020-10)South African southern right whales (SRWs; Eubalaena australis) have been studied intensively since 1969, and annual aerial surveys between 1971 and 2006 indicate a predominant 6.9% annual population growth rate – a ...
Now showing items 61-80 of 374