Browsing Faculty of Natural Science by Author "Gibbons, Mark"
Now showing items 1-10 of 10
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Changes in communities of Hydrozoa (Siphonophorae and Hydromedusae) across the Atlantic sector of the Southern Ocean
Kuyper, Drikus (University of the Western Cape, 2020) -
Description and assessment of neuston 1 communities present in the South Indian Ocean
Parker, Yasmeen (University of the Western Cape, 2022)Animal communities living at the sea-surface are relatively poorly known, despite the fact that this biotope is globally distributed, it acts as an important nursery area for many commercially important taxa and supports ... -
Detection of phycotoxins along the South African coast: a comparison of three different biological assay systems and instrumental analysis by high performance liquid chromatography
Myburgh, Carolyn l. (University of the Western Cape, 1998)In recent years, harmful algal blooms have been of growing concern in many parts of the world. These blooms often result in deterioration in water quality, large-scale mortalities in marine life, and shellfish poisonings ... -
The evaluation and development of diagnostic tools for the detection of ichthyophonus hoferi in fish host tissue samples
Wurdeman, Bret Mark (University of the Western Cape, 2019)Ichthyophonus hoferi is a highly pathogenic histozoic parasite that has low host specificity capable of producing mass mortalities of epizootic proportions in marine commercial fish populations. Currently in Southern Africa, ... -
Intra- and interspecific variability in the distribution patterns and diet of the two most common catsharks caught in demersal trawls off the West and South coasts of South Africa: Evidence for habitat and resource partitioning?
van der Heever, Grant Mark (University of the Western Cape, 2017)The objective of this thesis was to elucidate intra- and interspecific variability in the distribution patterns and diet of the two most common demersal catsharks taken as by-catch by the commercial trawling industry ... -
Managing ichthyophonus in multi-species exhibits at the two oceans aquarium
Nicolle, Nicholas (University of the Western Cape, 2020)Ichthyophonus hoferi has been diagnosed in multiple species at the Two Oceans Aquarium, this study focuses on Rhabdosargus globiceps (White stumpnose). I. hoferi is a mesomycetozoan parasite that multiplies in blood rich ... -
Observations on the biology and seasonal variation in feeding of the East Coast redeye round herring (Etrumeus wongratanai) (Clupeiformes), off Scottburgh, KwaZulu-Natal, South Africa
Vorsatz, Lyle Dennis (University of the Western Cape, 2016)The basic biology and ecology of Etrumeus wongratanai was investigated from samples of fish collected by jigging off Scottburgh, Kwazulu-Natal throughout 2014 and 2015. A total of 516 otoliths, 401 gonads, 140 stomachs and ... -
Observations on the ecology and life-history of Chrysaora fulgida (Reynaud 1830) (Scyphozoa: Semaeostomeae) and other pelagic cnidarians in the inshore waters off central Namibia
Skrypzeck, Heidi (University of the Western Cape, 2019)Although jellyfish are recognised recently as key components that can influence ecosystem functioning and trophic flows in the northern Benguela upwelling ecosystem, the number of published studies on their abundance, ... -
The relationship between sediment composition and infaunal polychaete communities along the southern coast of Namibia
Clarke, Dylan Thomas (University of the Western Cape, 2005)This study examined the relationship between sediment structure and infaunal polychaete communities off the southern coast of Namibia from two separate sets of data, and a total of ninety-two samples. It also examined ... -
The Shallow water bryozoans of the West Coast of South Africa
Florence, Wayne Kevin (University of the Western Cape, 2005)The South African biota is characterised by high levels of diversity and endemism. While commercially viable taxa have been well-studied, cryptic organisms such as bryozoans, have been neglected in terms of study. Taxonomic ...