Now showing items 41-45 of 45
Phylogenetic and morphological analysis of the Afroedura nivaria (Reptilia: Gekkonidae) species complex in South Africa
(Stellenbosch : Stellenbosch University, 2013-03)
ENGLISH ABSTRACT: The Afroedura nivaria complex is one of the six recognized species complexes within a southern African endemic genus, Afroedura. The A. nivaria complex is a morphologically conservative group of medium-sized ...
The histology of the alimentary canal and associated structures of Metopolophium dirhodum (Homoptera: Aphididae)
(Stellenbosch : Stellenbosch University, 1985-12)
The gross morphology and histology of the alimentary canal and the associated structures are described. The long tubular alimentary tract is divisible into different regions. The filter chamber and Malpighian tubules are ...
The uptake and distribution of selected heavy metals in the freshwater crab, Potamonautes perlatus (Milne Edwards), in the Eerste River, Western Cape
(Stellenbosch : University of Stellenbosch, 1996-12)
A number of studies on the general physico-chemical character of the Eerste River, Western Cape, had previously been done, but the problem of heavy metal pollution had, by 1993, not been addressed. A study was therefore ...
The phylogeographic population structure of the Cape sea urchin, Parechinus angulosus
(Stellenbosch : Stellenbosch University, 2011-03)
ENGLISH ABSTRACT: South Africa's coastline is in the region of 3650kms and encompasses many different and dynamic marine environments. To enhance our current understanding of the population structure and gene flow patterns ...
The effects of long-term exposure to cadmium on the earthworm Eisenia Fetida (Oligochaeta) : an investigation of the development of genetic metal resistance
(Stellenbosch : Stellenbosch University, 2006-12)
ENGLISH ABSTRACT: The development of potential genetically based resistance to cadmium (Cd) after long-term exposure to this metal at a sublethal concentration, was investigated in earthworm specimens belonging to the ...