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Theses and Dissertations (Zoology and Entomology): Recent submissions
Now showing items 1-20 of 374
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(University of Pretoria, 2019-11)Our understanding of polygynous life history is biased towards females. Few studies investigate the processes governing male life history because of the difficulty in measuring male reproductive effort, and because population ...
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(University of Pretoria, 2020-01)There is considerable variation in avian thermal physiology, with traits such as metabolic rates correlated with climate at both inter- and intraspecific levels. However, it is often unclear whether these correlations ...
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(University of Pretoria, 2019-10)Assessing the range, population size and trend of large carnivores are required for conservation management at global to local scales. Survey techniques should be precise with low bias, detect population trends and cover ...
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(University of Pretoria, 2019-04)The queen mandibular gland pheromone (QMP) enables the queen to maintain reproductive dominance by inhibiting worker ovary activation and production of queen-like multi-glandular secretions. While the queen is typically ...
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(University of Pretoria, 2019)The Gonipterus scutellatus species complex Gyllenhaal, 1833 (Curculionidae, Coleoptera) is comprised of 8 cryptic species native to East Australia and Tasmania. Of these 8 species only G. platensis, G. pulverulentus and ...
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(University of Pretoria, 2020)The temporal availability of arthropods varies in response to changing quality of vegetation which is influenced by climatic conditions. Climate in the Savanna and Grassland biomes is defined by wet and dry cycles. Bats ...
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(University of Pretoria, 2014-08)In the Kruger National Park (KNP), South Africa, five of the six extant members of the large carnivore guild: lions, Panthera leo, spotted hyaenas, Crocuta crocuta, leopards, P. pardus, cheetahs, Acynonyx jubatus, and wild ...
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(University of Pretoria, 2019-06)Phylogenetic, taxonomic and biogeographic analyses were conducted to investigate the role of the paleoclimatic and geological oscillations on the diversification and evolutionary history of two disparate southern African ...
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(University of Pretoria, 2020-02)Plantation forestry is a significant economic contributor in many countries around the world, accounting for approximately 0.9% of the global GDP according to a 2011 estimate. These exotic commodities are often at risk of ...
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(University of Pretoria, 2019)Land transformation for anthropogenic use is the leading cause of species declines globally, but some species are able to succeed in these environments. African clawless otters (Aonyx capensis) are the most widely ...
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(University of Pretoria, 2024-03-05)Historically, South Africa has only recorded two outbreaks of encephalomyocarditis (EMC); the first in pigs in KwaZulu-Natal in 1979 and the second in free-ranging African elephants (Loxodonta africana) in the Kruger ...
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(University of Pretoria, 2024-01-15)Sirex noctilio (Hymenoptera: Siricidae) is an invasive pest in South African pine plantations. Current pest management strategies for S. noctilio, such as silvicultural practices or biological control, are not always ...
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(University of Pretoria, 2023-11-30)As air temperatures (Tair) increase, birds may face increasingly severe trade-offs between heat dissipation and other important behaviours (i.e. foraging and provisioning offspring), the cumulative fitness costs of which ...
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Genetic diversity in captive and free-ranging black-footed cats (Felis nigripes) from South Africa (University of Pretoria, 2024-02-27)The black-footed cat is a small and solitary felid species that is endemic to the arid to semi-arid subregions of southern Africa but mainly occurs in South Africa. The species is currently listed in the “vulnerable” ...
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(University of Pretoria, 2024-02-26)Postnatal growth studies give a better understanding of age related characteristics that form an essential part of mammalian research concerned with population demographics, species management and conservation, and disease ...
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(University of Pretoria, 2023-12)Rest forms a crucial part of mammalian activity budgets and health. Yet, little research has been done on resting behaviour and the drivers behind resting behaviour. It has been suggested that predation risk, in particular, ...
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(University of Pretoria, 1976)Read abstract in the document
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(University of Pretoria, 2023-10-18)South African southern right whales (Eubalaena australis, right whales) migrate between their low latitude calving grounds and their high latitude feeding grounds every year. In addition to these high latitude feeding ...
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(University of Pretoria, 2023)Worldwide, most research regarding the direct impacts of more frequent heat waves on birds has focused on arid-zone species due to their vulnerability to rising air temperatures (Tair). In contrast, mesic lowlands have ...
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(University of Pretoria, 2022-12-14)Heterothermy is an energy saving physiological mechanism that allows small endothermic homeotherms to overcome conditions of reduced energy availability. Seasonal variations in environmental temperature and food availability ...
Now showing items 1-20 of 374