- UPSpace Home
- →
- Browsing by Supervisor
JavaScript is disabled for your browser. Some features of this site may not work without it.
Browsing by Supervisor "Greeff, Jaco M. (Jacobus Maree)"
Now showing items 1-13 of 13
-
(2012-12-14)Previous studies have claimed that the Afrikaner population of South Africa contains approximately 7% non-European DNA. It is thus ironic that Afrikaners practiced racial separation and discrimination against non-Europeans, ...
-
(University of Pretoria, 2017)Extensive research has been directed towards assessing the belief that facial appearance indicates health, particularly immunity. Many studies have linked facial appearance in the non-clinical populations with various ...
-
(University of Pretoria, 2008-08-11)A striking variation in the behaviour of pollinating fig wasps (Agonidae) is the occurrence of male fighting in some species while in others it is completely absent. Fighting behaviour was investigated at two levels. ...
-
(University of Pretoria, 2009-08-12)Mating system, mating behavior and the evolution thereof is the foundation of this study. More specifically the effect of inbreeding on the evolution of mating behavior is investigated. To this end the pollinating fig wasp, ...
-
(University of Pretoria, 2006)Facial attractiveness plays a crucial role in human mate choice, with individuals from both sexes using facial attractiveness cues to some degree when choosing a partner. Although some of the general facial attractiveness ...
-
(University of Pretoria, 2010-10-09)Fecundity determines the magnitude and direction of evolutionary change. By analyzing traits correlating to human fecundity we may understand our own evolutionary roots, and the behaviour and choices that define modern ...
-
(University of Pretoria, 2009)Individual-based simulation modelling is an excellent method for testing hypotheses, while including realistic and stochastic population parameters. This thesis considers the evolution of dispersal or inbreeding through ...
-
(University of Pretoria, 2006)A key factor in studying evolutionary biology is an understanding of the mechanisms organisms utilise in the ongoing process of adaptation. When faced with a heterogeneous and unpredictable environment, we expect organisms ...
-
(University of Pretoria, 2014-06)Spirocerca lupi is a nematode that parasitises canid species across the world. Infested hosts show symptoms associated with the disease called spirocercosis. The parasite is known to cause significant damage to its final ...
-
(University of Pretoria, 2010-05-26)
-
(University of Pretoria, 2011-06-16)A distinct pattern of obligate mutualism exists between fig tree hosts and their pollinating fig wasps. Normally one section or subsection of fig tree hosts is associated with one fig wasp genus. In general, each species ...
-
(University of Pretoria, 2014)Interactions among living organisms fall along the mutualism-parasitism continuum; where mutualistic interactions benefit one or both organisms and parasitic interactions harm them. Mutualisms are a particularly interesting ...
-
(University of Pretoria, 2011-06-11)The behaviour of sex allocation has been extensively studied in hymenopterans (ants, bees and wasps) as an adaptive trait with respect to intra-specific competition within the framework of kin selection theory. Mating in ...
Now showing items 1-13 of 13