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Browsing by Author "Bishop, Jacqueline M"

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A genetic perspective on leopard (Panthera pardus) conservation units across southern Africa

Author: Thacker, Thomas M Date: 2021 Conservation units are a tool to guide policy such that conservation goals can be achieved. These units should ideally synthesise a wide array of data – genetic, ecological, demographic – to identify the appropriate scales at which conservation ... Read more
Associations between MHC class I variation and blood pathogen prevalence in caracal

Author: Ly, Alicia Date: 2017 Adaptive genetic variability is vital to long-term species survival, as it presents the potential for evolutionary adaptive responses to environmental change. Genes of the Major Histocompatibility Complex (MHC) trigger the vertebrate adaptive ... Read more
A conservation genetic study of threatened, endemic southern African seabirds

Author: Nupen, Lisa Jane Date: 2014 Molecular techniques have a broad, and growing, application in the field of wildlife conservation, ranging from the systematic identification and classification of taxa, through studying genetic connectivity between populations, to parentage ... Read more
Demographic and genetic variability in Cape Dwarf Chameleons, Bradypodion pumilum, withink a fragmented, urban habitat

Author: Katz, Eric Michael Date: 2012 Habitat fragmentation is recognized as a primary cause of biodiversity loss. To maximize biodiversity maintenance, researchers in the field of conservation biology often investigate population demography and genetic variability for species ... Read more
Exploring the maintenance of plumage polymorphism in the Black Sparrowhawk

Author: Tate, Gareth John Date: 2016 Animals often display striking variation with respect to their phenotype. Intraspecific and interspecific variation in body colour represents one of the most well studied forms of phenotypic variation. For decades evolutionary biologists have ... Read more
Genetic signatures for enhanced olfaction in the African mole-rats

Author: Stathopoulos, Sofia ; Bishop, Jacqueline M ; O'Ryan, Colleen Date: 2014 The Olfactory Receptor (OR) superfamily, the largest in the vertebrate genome, is responsible for vertebrate olfaction and is traditionally subdivided into 17 OR families. Recent studies characterising whole-OR subgenomes revealed a ‘birth ... Read more c b
Major histocompatibility complex diversity in an urban Chacma baboon (Papio ursinus) population: Implications for conservation

Author: McCarter, Jenneca M Date: 2012 Since the 15th century, human activity has altered and degraded nearly half of the available land of the Cape Peninsula, South Africa; this has resulted in significant restriction and fragmentation of the historic geographic range of the ... Read more
MHC Class I diversity influences haematozoon infection intensity in the polymorphic black sparrowhawk (Accipiter melanoleucus)

Author: Le Roux, Liezl Date: 2015 The major histocompatibility complex (MHC) is a multigene family known to be the most variable gene group in vertebrates in terms of allelic diversity and gene number. Pathogen mediated selection is thought to be the major driving force behind ... Read more
Molecular detection of tick-borne pathogens in caracals (Caracal caracal) living in human-modified landscapes of South Africa

Author: Viljoen, Storme ; O’Riain, M J ; Penzhorn, Barend L ; Drouilly, Marine ; Serieys, Laurel E K ; Cristescu, Bogdan ; Teichman, Kristine J ; Bishop, Jacqueline M Date: 30 Apr 2020 Background Wild carnivores living alongside humans and domestic animals are vulnerable to changes in the infectious disease dynamics in their populations. The aims of this study were to determine the prevalence and diversity of selected ... Read more
Phenotypic convergence in genetically distinct lineages of a Rhinolophus species complex (Mammalia, Chiroptera)

Author: Jacobs, David S ; Babiker, Hassan ; Bastian, Anna ; Kearney, Teresa ; Eeden, Rowen van ; Bishop, Jacqueline M Date: 2013 Phenotypes of distantly related species may converge through adaptation to similar habitats and/or because they share biological constraints that limit the phenotypic variants produced. A common theme in bats is the sympatric occurrence of ... Read more c b
Pleistocene aridification cycles shaped the contemporary genetic architecture of southern african baboons

Author: Sithaldeen, Riashna ; Ackermann, Rebecca Rogers ; Bishop, Jacqueline M Date: 2015 Plio-Pleistocene environmental change influenced the evolutionary history of many animal lineages in Africa, highlighting key roles for both climate and tectonics in the evolution of Africa’s faunal diversity. Here, we explore diversification ... Read more c b
Population genetic structuring in the common mole-rat, Cryptomys hottentotus hottentotus

Author: Bishop, Jacqueline M Date: 2002 This thesis addresses the population genetic consequences of divergent social structure and dispersal regimes in two study populations of the common mole-rat Cryptomys hottentotus hottentotus. Aspects relating to the relationship between, ... Read more
Prevalence and drivers of blood parasitism in African penguins (Spheniscus demersus)

Author: Naude, Vincent Norman Date: 2014 In the past decade African penguin (Spheniscus demersus) populations have experienced declining population sizes of > 60% in some instances. This has primarily been attributed to shifting prey availability and competition with regional ... Read more
Sensory divergence among populations of a southern African endemic horseshoe bat (Chiroptera: Rhinolophidae ): a multidisciplinary approach

Author: Odendaal, Lizelle Janine Date: 2015 A fundamental goal of evolutionary biology is to understand how natural selection, random genetic drift and gene flow interact to promote adaptive trait divergence within species. Environmental gradients are ideal opportunities for disentangling ... Read more
Sensory trait variation in an echolocating bat suggests roles for both selection and plasticity

Author: Odendaal, Lizelle J ; Jacobs, David S ; Bishop, Jacqueline M Date: 27 Mar 2014 Background: Across heterogeneous environments selection and gene flow interact to influence the rate and extent of adaptive trait evolution. This complex relationship is further influenced by the rarely considered role of phenotypic plasticity ... Read more c b
Significant Population Structure and Little Connectivity in South African Rocky Shore Species: Implications for the Conservation of Regional Marine Biodiversity

Author: Wright, Daniel B Date: 2012 South Africa has 3650 km of coastline that spans the boundary between the Atlantic and Indo-Pacific biomes. The coastal waters boast a remarkable array of biological diversity and high levels of species abundance and endemism. Currently around ... Read more
The tangled history of olfaction in African mole-rats, Bathyergidae: insights from Olfactory Receptor genes

Author: Stathopoulos, Sofia Date: 2012 This thesis reports the first assessment of OR variation in Bathyergidae, and therefore, the first for a family of subterranean mammals. Using a PCR-sequencing approach, 178 unique OR sequences, corresponding to 119 unique OR genes are ... Read more
Wildlife health in human-modified landscapes: epidemiology of tick-borne pathogens affecting black-backed jackals and caracals

Author: Viljoen, Storme Date: 2017 Despite the importance of disease as a wildlife management challenge, baseline research on the epidemiology of pathogens occurring in wildlife populations within both rural and urban landscapes has received little attention to date. The aim ... Read more