A5028845572- Marine Biology and Ecology Research
- Mollusks and Parasites Studies
- Aquatic Invertebrate Ecology and Behavior
- Marine Bivalve and Aquaculture Studies
- Invertebrate Taxonomy and Ecology
- Parasite Biology and Host Interactions
- Marine Ecology and Invasive Species
- Paleontology and Stratigraphy of Fossils
- Marine and coastal plant biology
- Species Distribution and Climate Change
- Ecology and Vegetation Dynamics Studies
- Marine Biology and Environmental Chemistry
- Coral and Marine Ecosystems Studies
- Animal and Plant Science Education
- Marine and fisheries research
- Coastal and Marine Management
- Scarabaeidae Beetle Taxonomy and Biogeography
- Animal Ecology and Behavior Studies
- Evolution and Paleontology Studies
- Marine and environmental studies
- Isotope Analysis in Ecology
- Ocean Acidification Effects and Responses
- Outsourcing and Supply Chain Management
- Heart Rate Variability and Autonomic Control
- Subterranean biodiversity and taxonomy
École Pratique des Hautes Études
2024
Institut de Systématique, Évolution, Biodiversité
2024
Centre National de la Recherche Scientifique
2024
National Museum Wales
2019-2024
University of KwaZulu-Natal
2010-2022
Umkhuseli Innovation and Research Management
1996-2021
St Vincent's Hospital Sydney
2014
British Antarctic Survey
2011
University of Technology Sydney
2007
Natural History Museum
1998
Invertebrate species represent more than 99% of animal diversity; however, they receive much less publicity and attract disproportionately minor research effort relative to vertebrates. Nonmarine mollusks (i.e., terrestrial freshwater) are one the most diverse imperiled groups animals, although not many people other a few specialists who study group seem be aware their plight. include number phylogenetically disparate lineages species-rich assemblages that two molluscan classes, Bivalvia...
The genus Afrodonta s. lat. is shown to comprise several lineages with distinctive shell characters primarily associated the microsculpture of protoconch and teleoconch, manner in which apertural barriers are deposited. These str. five new genera: Amatholedonta gen. nov., Biomphalodonta Costulodonta Iterodonta nov. Phialodonta Twelve species described, doubling diversity aperturally dentate charopid snails known from southern Africa. All narrow-range endemics. A subspecies one more widely...
One new genus and five species of land snails are described from high altitude, insular, Afrotemperate forest habitats in northern South Africa. The distribution these is discussed relation to other narrowly endemic occurring this neighbouring regions. Ptilototheca gen. nov.; the are: Gulella davisae sp. nov., G. hadroglossa soutpansbergensis et Sheldonia monsmaripi nov. S. wolkbergensis
A new genus and eight species of urocyclid snails are described from eastern South Africa. The supra-specific taxa Kerkophorus Godwin-Austen, 1912 Microkerkus considered distinct Sheldonia Ancey, 1887 treated as separate genera. diagnostic morphological features all three genera detailed a fourth genus, for which there is no existing name, new: Selatodryas gen. nov. provisional key to genus-level within s.l. provided. Eight piperatus sp. nov., K. vittarubra scrobicolus terrestris sibaya...
Abstract Gastropods have survived several mass extinctions during their evolutionary history resulting in extraordinary diversity morphology, ecology, and developmental modes, which complicate the reconstruction of a robust phylogeny. Currently, gastropods are divided into six subclasses: Caenogastropoda, Heterobranchia, Neomphaliones, Neritimorpha, Patellogastropoda, Vetigastropoda. Phylogenetic relationships among these taxa historically lack consensus, despite numerous efforts using...
We present a 16-year-old male with severe acute respiratory and renal failure as result of Goodpasture syndrome, requiring venovenous extracorporeal membrane oxygenation (VV-ECMO) for pulmonary haemorrhage. The patient received no systemic anticoagulation 25 26 ECMO days (20 consecutively) suffered coagulation-related adverse events. had subtherapeutic profile according to recommended guidelines during most this time. made full recovery without compromise, circuit failure, thrombotic events...
Recent expeditions have revealed high levels of biodiversity in the tropical deep-sea, yet little is known about age or origin this biodiversity, and large-scale molecular studies are still few number. In study, we had access to largest number solariellid gastropods ever collected for studies, including many rare unusual taxa. We used a Bayesian chronogram these deep-sea (1) test hypothesis that deep-water communities arose onshore, (2) determine whether Antarctica acted as source diversity...
South Africa has taken an iterative approach to marine ecosystem mapping over 18 years that provided a valuable foundation for assessment, planning and decision-making, supporting improved ecosystem-based management protection. Iterative progress been made in overcoming challenges faced by developing countries, especially the inaccessible realm. Our aim is report on produce improve national map guide other countries facing similar challenges, illustrate impact of even simplest map. produced...
The land snail superfamily Orthalicoidea, although generally assumed to be of Gondwanan origin, is considered by the majority recent authors absent from African continent. However, two poorly-known genera, Aillya and Prestonella, have historically been referred orthalicoid family Bulimulidae s.l. Anatomical study has subsequently shown it morphologically distinct referable a its own, outside but Prestonella remained an enigmatic taxon unknown affinity. Using molecular morphological evidence,...
Abstract Invertebrate diversity is seldom included in conservation assessments, primarily because information lacking. Broad surveys may be too costly, difficult or ineffective. Here we assess a ‘shopping basket’ approach, targeting 17 taxa using range of methods. We sampled 43 one‐hectare sites stratified within 560 km 2 heterogenous African savanna. achieved up to 80% sampling completeness for epigaeic fauna, but generally much lower (around 50%) plant‐dwelling and flying taxa. For the...
Natalina sensu lato includes some of the largest carnivorous snails in world and represents an important African radiation Gondwanan land snail family Rhytididae. It comprises taxa Natalina, Afrorhytida Capitina, all three which we treat as full genera. We provide a comprehensive revision each genus, update species-level taxonomy extensively light new molecular morphological data. Detailed comparative observations are provided for distal reproductive tract (including spermatophores first...
The gastropod radula exhibits exceptional morphological variability. Despite this enormous diversity, the main patterns of synthesis teeth and membrane, characteristic different groups can be identified. rhipidoglossan contains numerous in each transverse row was found phylogenetically distant Gastropoda. Studying formation through stages ontogeny species with type is important determining gastropods. We studied during development one trochid vetigastropod, Margarites helicinus, using light...
Invertebrates in general have long been underrepresented studies on biodiversity, biogeography and conservation. Boundaries of biodiversity hotspots are often delimited intuitively based floristic endemism seldom empirically tested using actual species distributions, especially invertebrates. Here we analyse the zoogeography terrestrial malacofauna from south-eastern Africa (SEA), proposing first mollusc-based numerical regionalisation for area. We also discuss patterns centres land snail...
The rhipidoglossan radula, consisting of numerous teeth in each transverse row, is characteristic phylogenetically distant groups gastropods, including Vetigastropoda, Neritimorpha and 'lower' Heterobranchia. Previous studies have revealed the main patterns formation radula vetigastropods, feature which division zone into two horns, where marginal are formed by a multilayered epithelium (odontoblasts). This work devoted to study Nerita litterata using light electron microscopy. data obtained...