Browsing Doctoral Degrees (Zoology) by Advisor "Downs, Colleen Thelma."
Now showing items 1-11 of 11
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Aspects of the ecology of invasive rose-ringed parakeets (Psittacula krameri) in eThekwini Metropolitan, KwaZulu-Natal Province, South Africa.
(2021)Globally, the rose-ringed parakeet Psittacula krameri (Scopoli, 1769) has been cited as one of the world’s worst gregarious invasive parrot species, having established breeding colonies successfully outside its native ... -
Aspects of the thermal physiology and fruit digestion of Knysna (Tauraco Corythaix) and Purple-crested (Gallirex porphyrelophus)
(2010)Chapter 2: Avian frugivores have been somewhat poorly studied with regards to the effects that different fruit sugar types and concentrations have on their digestive efficiencies. Digestion of sugars in equicaloric and ... -
Assessing the risk of non-native small mammals in the South African pet trade.
(2021)Humans have introduced non-native small mammalian species for various purposes, including hunting, biological control, farming, fur markets, ornamental, and pet trade. The latter has been cited as one of the main invasion ... -
The behavioural thermoregulation and ecophysiology of the leopard tortoise (Geochelone pardalis) in the Nama-Karoo.
(2007)The leopard tortoise (Geochelone pardalis) is the largest of the southern African tortoise species and has a wide distribution range. However, there is a lack of ecological and physiological information about the species, ... -
The conservation ecology of the Nile crocodile (Crocodylus niloticus) at Ndumo Game Reserve in North Eastern KwaZulu-Natal and the Rio Maputo floodplain in South Eastern Mozambique.
(2013)Up until 1969 Nile Crocodiles (Crocodylus niloticus) were considered as vermin in South Africa and were actively persecuted throughout the country. In an effort to re-establish viable populations within protected areas in ... -
Ecology and conservation of the Cape vulture in the Eastern Cape Province, South Africa.
(2016)Abstract available in PDF file. -
Fleshy-fruited invasive alien plants and frugivores in South Africa.
(2011)South Africa is one of the world's most biologically invaded countries and has spent billions of rands on efforts to eradicate alien invasive plants. Chemical and mechanical control methods have varied in success and the ... -
Integrated physiology and behaviour of Thallomys nigricauda along an aridity gradient.
(2008)Climate change predictions suggest that the continent most vulnerable to climate change is Africa. The impacts of potential changes which include increases in air temperatures and rainfall variability are negative with ... -
Nectar preferences of specialist and occasional avian nectarivores, and their role in the evolution of floral traits.
(2009)Our understanding of bird pollination systems has changed dramatically in the last few years. A long-standing paradigm was that hummingbirds and passerine birds select for different nectar properties in flowers ... -
Reproductive behaviour and habitat use in the Blue-Eyed Black Lemur (Eulemur flavifrons, Gray, 1867) at the Sahamalaza-Iles Radama National Park, Madagascar.
(2009)The critically endangered blue-eyed black lemur (Eulemur flavifrons) is one the leaststudied day active lemurs because of the recent rediscovery and limited distribution. This thesis examined the habitat use, reproductive ... -
Students' competence and understanding of scientific method in the life sciences at the University of KwaZulu-Natal.
(2015)This thesis focuses on describing the conceptions and misconceptions that undergraduate Life Science students hold regarding aspects of the scientific method at the University of KwaZulu-Natal (UKZN). This research is ...