Now showing items 91-95 of 95
The effects of coastal lowland instability : melanism in Cordylus polyzonus and terrestriality in Cordylus macropholis
(Stellenbosch : Stellenbosch University, 2001-12)
ENGLISH ABSTRACT: It has been suggested that rapid environmental change along the Western Cape coastal lowland has had a profound bearing on the evolution of cordylid populations in this region. To test a hypothesis on ...
The role of male territory size and quality in mating and reproductive success of Cape and Gurney's sugarbirds, Promerops cafer and Promerops gurneyi
(Stellenbosch : Stellenbosch University, 1999-12)
ENGLISH ABSTRACT: There are two species of sugarbirds, the Cape and Gurney's sugarbirds, and both are endemic to southern Africa. The,role of territory size and quality on their mating and reproductive success was ...
Effect of long-term exposure to cadmium on the earthworm Eisenia fetida (Oligochaeta) : possible resistance
(Stellenbosch : Stellenbosch University, 1999-10)
ENGLISH ABSTRACT: Environmental cadmium is the result of emissions from non-ferrous smelters and mining activities, as well as disposal of Cd-containing household waste Cd-containing sewage sludge and phosphate fertilisers. ...
Bone histology of a lowland and montane species from the family Cordylidae (Reptilia : Squamata)
(Stellenbosch : Stellenbosch University, 1999)
ENGLISH ABSTRACT: Ecological adaptations, size and longevity, are known to be reflected as histological variations within vertebrate skeletons. To obtain baseline information on bone histology in the lizard family ...
A comparative study of the morphology of the braincase and associated structures of early Therocephalia (Amniota: therapsida)
(Stellenbosch : Stellenbosch University, 1994)
ENGLISH ABSTRACT: The early Therocephalia lies at the base of the line of mammal-like reptiles which eventually gave rise to mammals. The phylogenetic position of this taxon is therefore of great value in establishing ...