Browsing Faculty of Natural and Agricultural Sciences by Title
Now showing items 186-205 of 4825
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Amphibian fungal panzootic causes catastrophic and ongoing loss of biodiversity
(AAAS, 2019)Rapid spread of disease is a hazard in our interconnected world. The chytrid fungus Batrachochytrium dendrobatidis was identified in amphibian populations about 20 years ago and has caused death and species extinction at ... -
Amphibian skin defences show variation in ability to inhibit growth of Batrachochytrium dendrobatidis isolates from the Global Panzootic Lineage
(Microbiology Society, 2017)The fungal pathogen Batrachochytrium dendrobatidis has caused declines and extinctions in hundreds of amphibian species across the world. Virulence varies among and within lineages; the Global Panzootic Lineage (GPL) is ... -
Amphibian survey and current absence of Batrachochytrium dendrobatidis (Bd) in Ivoloina Park, Toamasina (eastern Madagascar)
(Taylor & Francis, 2014)Amphibians are threatened globally by the chytridiomycete fungus Batrachochytrium dendrobatidis (Bd), which is still expanding in range. Madagascar, rich in amphibian diversity, remains one of the few places that the fungus ... -
Amphibian symbiotic bacteria do not show a universal ability to inhibit growth of the global panzootic lineage of Batrachochytrium dendrobatidis
(Amer Soc Microbiology, 2015)Microbiomes associated with multicellular organisms influence the disease susceptibility of hosts. The potential exists for such bacteria to protect wildlife from infectious diseases, particularly in the case of the globally ... -
Amphibiophilus mooiensis n. sp. (Nematoda: Amphibiophilidae), a parasite of Amietia delalandii (Duméril & Bibron) (Amphibia: Pyxicephalidae) from South Africa
(Springer, 2018)Four species of the genus Amphibiophilus Skrjabin, 1916 from pyxycephalid frogs in southern and central Africa are currently recognised as valid. Several specimens of Amphibiophilus were found in material from the common ... -
An amplified description for the elusive Cordylogyne argillicola (Apocynaceae-Asclepiadoideae) from Namibia
(Magnolia Press, 2017)Owing to the brief description, and in the absence of any known type collection of Cordylogyne argillicola, the application of the name remained unresolved for over a century. Type material that was recently discovered in ... -
An amplified description for the elusive Cordylogyne argillicola (Apocynaceae-Asclepiadoideae) from Namibia
(Magnolia Press, 2017)Owing to the brief description, and in the absence of any known type collection of Cordylogyne argillicola, the application of the name remained unresolved for over a century. Type material that was recently discovered in ... -
An 11-digit identification system for individual Nile crocodiles using natural markings
(AOSIS, 2016)Research and conservation of wild crocodiles and husbandry of captive crocodiles requires the reliable identification of individuals. We present a method using the individual colour markings on the first 10 single-crest ... -
An appraisal of the hydrogen atom transfer mechanism for the reaction between thiourea derivatives and OH radical: a case-study of dimethylthiourea and diethylthiourea
(Elsevier, 2017)Reactions between thioureas (TUs) and hydroxyl radical ( OH) have wide applications in electrochemical, radiation, photochemical and biological processes. TUs + OH reactions have been suggested to proceed through either ... -
An assessment of radiological hazards from gold mine tailings in the province of Gauteng in South Africa
(MDPI, 2016)Radiological hazards associated with exposure to Naturally Occurring Radionuclides Materials from gold mine tailings in the province of Gauteng in South Africa were evaluated. A comparison was made with soil samples from ... -
An ethnopharmacological review of Bulbine frutescens (L.) Willd. (Asphodelaceae) - a medicinal plant used for the treatment of skin diseases in the Eastern Cape, South Africa
(Ponte, 2017)Background: Bulbine frutescens (Asphodelaceae) is commonly used in the Eastern Cape Province of South Africa for the treatment of burns, dysentry, sexually transmitted diseases (STDs), urinary tract infections, cracked ... -
An inductively derived research framework for student satisfaction in ODL : the Higher Education environment
(UNISA Press, 2016)Student satisfaction, as a key psychological-affective outcome of tertiary education, is a direct measure of the success of Open Distance Learning (ODL). It is therefore vital for ODL Higher Education Institutions to assess ... -
An integrable generalization of the super AKNS hierarchy and its bi-Hamiltonian formulation
(Elsevier, 2017)Based on a Lie super-algebra B(0, 1), an integrable generalization of the super AKNS iso-spectral problem is introduced and its corresponding generalized super AKNS hierarchy is generated. By making use of the super-trace ... -
An integrative approach to value-added planning: from community needs to local authority revenue
(Wiley, 2015)The concept of value-added planning (as part of the Valuing Attractive Landscapes in the Urban Economy, INTERREG IVB North West Europe Project) is introduced in this paper to facilitate integrative planning, focusing on ... -
Analgesic and anti‐inflammatory drugs in sports: implications for exercise performance and training adaptations
(Wiley, 2018)Over‐the‐counter analgesics, such as anti‐inflammatory drugs (NSAIDs) and paracetamol, are widely consumed by athletes worldwide to increase pain tolerance, or dampen pain and reduce inflammation from injuries. Given that ... -
Analyses of the genetic diversity and protein expression variation of the acyl: CoA medium-chain ligases, ACSM2A and ACSM2B
(Springer, 2018)Benzoate (found in milk and widely used as preservative), salicylate (present in fruits and the active component of aspirin), dietary polyphenols produced by gut microbiota, metabolites from organic acidemias, and medium-chain ... -
The Analysis of a Feed Component Imported into South Africa for Aflatoxin in Relation to Fungal and Mycotoxin Contamination
(Today Science, 2014)Currently there is concern with respect to the occurrence of mycotoxins in feed commodities, which could result in the loss of animal production and danger to consumers. Recent legislation to control the trading of such ... -
An analysis of factors influencing student-athlete recruitment : a case study : sport marketing
(AFAHPER-SDLAM PublicationsAJOLSabinet, 2014)With the professionalisation of sport in South Africa, the pressure to perform in sport amongst tertiary institutions has increased the competition to recruit the best athletes with the highest potential to perform. Tertiary ... -
Analysis of information sources used by fish farmers in Ife Central
(Kamla-Raj, 2016)Information sources play a vital role in improvement of fish farming, however, the different sources of information do not receive equal attention by farmers, and as a result this study was conducted in the Ife Central ...