https://commons.ru.ac.za/vital/access/manager/Index en-us 5 Physical and biological variability in the Antarctic Polar Frontal Zone: report on research cruise 103 of the MV SA Agulhas https://commons.ru.ac.za/vital/access/manager/Repository/vital:6910 Wed 31 Jul 2024 11:17:24 SAST ]]> Coastal topography drives genetic structure in marine mussels https://commons.ru.ac.za/vital/access/manager/Repository/vital:74409 Wed 17 Jul 2024 11:26:51 SAST ]]> Dispersal barriers and stochastic reproductive success do not explain small-scale genetic structure in a broadcast spawning marine mussel https://commons.ru.ac.za/vital/access/manager/Repository/vital:74403 Wed 17 Jul 2024 11:06:03 SAST ]]> Unexpected genetic structure of mussel populations in South Africa: indigenous Perna perna and invasive Mytilus galloprovincialis https://commons.ru.ac.za/vital/access/manager/Repository/vital:74401 Wed 17 Jul 2024 10:53:22 SAST ]]> Two sides of the same coin: extinctions and originations across the Atlantic/Indian Ocean boundary as consequences of the same climate oscillation https://commons.ru.ac.za/vital/access/manager/Repository/vital:74399 Wed 17 Jul 2024 10:40:03 SAST ]]> "Nested" cryptic diversity in a widespread marine ecosystem engineer: a challenge for detecting biological invasions https://commons.ru.ac.za/vital/access/manager/Repository/vital:74396 Wed 17 Jul 2024 10:00:45 SAST ]]> Phylogeographic structure of the caridean shrimp Palaemon peringueyi in South Africa: further evidence for intraspecific genetic units associated with marine biogeographic provinces https://commons.ru.ac.za/vital/access/manager/Repository/vital:74392 Wed 17 Jul 2024 09:02:57 SAST ]]> Lack of genetic differentiation among four sympatric southeast African intertidal limpets (Siphonariidae): phenotypic plasticity in a single species? https://commons.ru.ac.za/vital/access/manager/Repository/vital:74390 Wed 17 Jul 2024 06:04:03 SAST ]]> Implications of life history for genetic structure and migration rates of southern African coastal invertebrates: planktonic, abbreviated and direct development https://commons.ru.ac.za/vital/access/manager/Repository/vital:74388 Wed 17 Jul 2024 05:50:17 SAST ]]> Climate‐driven genetic divergence of limpets with different life histories across a southeast African marine biogeographic disjunction: different processes, same outcome https://commons.ru.ac.za/vital/access/manager/Repository/vital:74385 Wed 17 Jul 2024 05:21:17 SAST ]]> Impacts of marine biogeographic boundaries on phylogeographic patterns of three South African estuarine crustaceans https://commons.ru.ac.za/vital/access/manager/Repository/vital:6548 Wed 10 Jul 2024 12:15:43 SAST ]]> Climate change, genetics or human choice: why were the shells of mankind’s earliest ornament larger in the Pleistocene than in the Holocene? https://commons.ru.ac.za/vital/access/manager/Repository/vital:6952 Wed 10 Jul 2024 12:09:17 SAST ]]> Oceanic dispersal barriers, adaptation and larval retention: an interdisciplinary assessment of potential factors maintaining a phylogeographic break between sister lineages of an African prawn https://commons.ru.ac.za/vital/access/manager/Repository/vital:6546 Wed 10 Jul 2024 12:07:50 SAST ]]> Tri-locus sequence data reject a Gondwanan origin hypothesis for the African/South Pacific crab genus Hymenosoma https://commons.ru.ac.za/vital/access/manager/Repository/vital:6547 Wed 10 Jul 2024 12:05:54 SAST ]]> Mitochondrial DNA paradox: sex-specific genetic structure in a marine mussel despite maternal inheritance and passive dispersal https://commons.ru.ac.za/vital/access/manager/Repository/vital:6836 Wed 10 Jul 2024 12:01:13 SAST ]]> Environmental domains and range-limiting mechanisms: testing the Abundant Centre Hypothesis using southern African sandhoppers https://commons.ru.ac.za/vital/access/manager/Repository/vital:6848 Wed 10 Aug 2022 06:44:07 SAST ]]> Biogeographical boundaries, functional group structure and diversity of rocky shore communities along the Argentinean coast https://commons.ru.ac.za/vital/access/manager/Repository/vital:6835 Wed 10 Aug 2022 06:43:19 SAST ]]> Evidence for rangewide panmixia despite multiple barriers to dispersal in a marine mussel https://commons.ru.ac.za/vital/access/manager/Repository/vital:27714 Wed 10 Aug 2022 06:42:11 SAST ]]> Intraspecific mitochondrial gene variation can be as low as that of nuclear rRNA: https://commons.ru.ac.za/vital/access/manager/Repository/vital:40442 Wed 10 Aug 2022 06:32:40 SAST ]]> A review of marine phylogeography in southern Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:74382 Tue 16 Jul 2024 16:00:49 SAST ]]> Small scale habitat effects on anthropogenic litter material and sources in a coastal lagoon system: https://commons.ru.ac.za/vital/access/manager/Repository/vital:40450 Tue 16 Jul 2024 08:20:16 SAST ]]> The subspecies of Antarctic Terns (Sterna vittata) wintering on the South African coast: evidence from morphology, genetics and stable isotopes https://commons.ru.ac.za/vital/access/manager/Repository/vital:74303 Tue 16 Jul 2024 06:47:19 SAST ]]> Rejection of the genetic implications of the “Abundant Centre Hypothesis” in marine mussels https://commons.ru.ac.za/vital/access/manager/Repository/vital:74302 Tue 16 Jul 2024 06:36:25 SAST ]]> Mitonuclear discordance in genetic structure across the Atlantic/Indian Ocean biogeographical transition zone https://commons.ru.ac.za/vital/access/manager/Repository/vital:74301 Tue 16 Jul 2024 06:24:04 SAST ]]> Historical demography of southern African patellid limpets: congruence of population expansions, but not phylogeography https://commons.ru.ac.za/vital/access/manager/Repository/vital:74300 Tue 16 Jul 2024 06:10:50 SAST ]]> Evolution of foraging behaviour: Deep intra-generic genetic divergence between territorial and non-territorial southern African patellid limpets https://commons.ru.ac.za/vital/access/manager/Repository/vital:74299 Tue 16 Jul 2024 06:00:01 SAST ]]> Coastal dunefields maintain pre‐Holocene genetic structure in a rocky shore red alga https://commons.ru.ac.za/vital/access/manager/Repository/vital:74298 Tue 16 Jul 2024 04:56:46 SAST ]]> A comparison of genetic structure in two low-dispersal crabs from the Wild Coast, South Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:74297 Tue 16 Jul 2024 04:46:31 SAST ]]> The Southern Ocean Group at Rhodes University: seventeen years of biological oceanography in the Southern Ocean reviewed https://commons.ru.ac.za/vital/access/manager/Repository/vital:6834 Thu 25 Apr 2024 15:47:55 SAST ]]> Anti-oesophageal cancer activity in extracts of deep-water Marion Island sponges https://commons.ru.ac.za/vital/access/manager/Repository/vital:6569 Thu 25 Apr 2024 15:45:37 SAST ]]> Regionalism in marine biology: the convergence of ecology, economics and politics in South Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:6938 Thu 13 May 2021 05:41:46 SAST ]]> Will the invasive mussel Mytilus galloprovincialis Lamarck replace the indigenous Perna perna L. on the south coast of South Africa? https://commons.ru.ac.za/vital/access/manager/Repository/vital:6926 Thu 13 May 2021 01:09:15 SAST ]]> A tropical/subtropical biogeographic disjunction in southeastern Africa separates two evolutionarily significant units of an estuarine prawn https://commons.ru.ac.za/vital/access/manager/Repository/vital:74383 Thu 01 Aug 2024 09:16:19 SAST ]]> Microplastic leachates induce species-specific trait strengthening in intertidal mussels: https://commons.ru.ac.za/vital/access/manager/Repository/vital:40162 Mon 15 Jul 2024 10:12:29 SAST ]]> Biogeographic and nearshore–offshore trends in isotope ratios of intertidal mussels and their food sources around the coast of southern Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:6878 Mon 15 Jul 2024 06:06:07 SAST ]]> Temporal and spatial variability in stable isotope ratios of SPM link to local hydrography and longer term SPM averages suggest heavy dependence of mussels on nearshore production https://commons.ru.ac.za/vital/access/manager/Repository/vital:6969 Mon 15 Jul 2024 06:05:04 SAST ]]> Associations in ephemeral systems: the lack of trophic relationships between sandhoppers and beach wrack https://commons.ru.ac.za/vital/access/manager/Repository/vital:74250 Mon 15 Jul 2024 04:11:09 SAST ]]> Effects of food quality on tissue-specific isotope ratios in the mussel Perna perna https://commons.ru.ac.za/vital/access/manager/Repository/vital:74251 Mon 15 Jul 2024 04:10:18 SAST ]]> Geographic variation in the trophic ecology of an avian rocky shore predator, the African black oystercatcher, along the southern African coastline https://commons.ru.ac.za/vital/access/manager/Repository/vital:74252 Mon 15 Jul 2024 04:09:13 SAST ]]> Morphologically similar, coexisting hard corals (Porites lobata and P. solida) display similar trophic isotopic ratios across reefs and depths https://commons.ru.ac.za/vital/access/manager/Repository/vital:74253 Mon 15 Jul 2024 04:08:17 SAST ]]> Stable isotope analysis indicates a lack of inter-and intra-specific dietary redundancy among ecologically important coral reef fishes https://commons.ru.ac.za/vital/access/manager/Repository/vital:74254 Mon 15 Jul 2024 04:07:17 SAST ]]> Stable isotope methods: the effect of gut contents on isotopic ratios of zooplankton https://commons.ru.ac.za/vital/access/manager/Repository/vital:74255 4.0mm) collected using bongo net tows in the tropical waters of the south-west Indian Ocean. Animals were collected at night, when they were likely to be feeding, sieved into size classes and separated into genera. We focused on Euphausia spp which dominated zooplankton biomass. Three treatment types were processed: bulk animals, bulk animals without guts and tail muscle from each size class at 10 bongo stations.]]> Mon 15 Jul 2024 04:06:18 SAST ]]> The effects of tissue type and body size on δ13C and δ15N values in parrotfish (Labridae) from Zanzibar, Tanzania https://commons.ru.ac.za/vital/access/manager/Repository/vital:74256 Mon 15 Jul 2024 04:04:55 SAST ]]> Variability in the fractionation of stable isotopes during degradation of two intertidal red algae https://commons.ru.ac.za/vital/access/manager/Repository/vital:74257 Mon 15 Jul 2024 04:03:48 SAST ]]> δ13C and δ15N biogeographic trends in rocky intertidal communities along the coast of South Africa: evidence of strong environmental signatures https://commons.ru.ac.za/vital/access/manager/Repository/vital:74258 Mon 15 Jul 2024 04:01:55 SAST ]]> Effect of wave exposure on growth and mortality rates of the mussel Perna perna: bottom up regulation of intertidal populations https://commons.ru.ac.za/vital/access/manager/Repository/vital:6955 Fri 26 Apr 2024 10:51:41 SAST ]]> Scales of mussel bed complexity: structure, associated biota and recruitment https://commons.ru.ac.za/vital/access/manager/Repository/vital:6956 Fri 26 Apr 2024 10:51:16 SAST ]]> Spatial structure of recruitment in the mussel Perna perna at local scales: effects of adults, algae and recruit size https://commons.ru.ac.za/vital/access/manager/Repository/vital:6898 Fri 26 Apr 2024 10:50:36 SAST ]]> Supply-side ecology of the brown mussel, Perna perna: an investigation of spatial and temporal variation in, and coupling between, gamete release and larval supply https://commons.ru.ac.za/vital/access/manager/Repository/vital:6954 Fri 26 Apr 2024 10:50:08 SAST ]]> Interacting effects of wave exposure, tidal height and substratum on spatial variation in densities of mussel Perna perna plantigrades https://commons.ru.ac.za/vital/access/manager/Repository/vital:6879 Fri 26 Apr 2024 10:49:46 SAST ]]> Contrasting spatial heterogeneity of sessile organisms within mussel (Perna perna L.) beds in relation to topographic variability https://commons.ru.ac.za/vital/access/manager/Repository/vital:6949 Fri 26 Apr 2024 10:48:50 SAST ]]> The relationship between human exploitation pressure and condition of mussel populations along the south coast of South Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:6913 Fri 26 Apr 2024 10:48:12 SAST ]]> Temporal scales of variation in settlement and recruitment of the mussel Perna perna (Linnaeus, 1758) https://commons.ru.ac.za/vital/access/manager/Repository/vital:6963 Fri 26 Apr 2024 10:47:52 SAST ]]> Spatio-temporal variability of larval abundance and settlement of Perna perna: differential delivery of mussels https://commons.ru.ac.za/vital/access/manager/Repository/vital:6877 Fri 26 Apr 2024 10:47:13 SAST ]]> Sand stress as a non-determinant of habitat segregation of indigenous (Perna perna) and invasive (Mytilus galloprovincialis) mussels in South Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:6946 Fri 26 Apr 2024 10:46:45 SAST ]]> Wave exposure effects on population structure and recruitment in the mussel Perna perna suggest regulation primarily through availability of recruits and food, not space https://commons.ru.ac.za/vital/access/manager/Repository/vital:6968 15 mm) densities for both shore types (P < 0.05) but the correlations were extremely weak (r 2 < 0.06 in each case). In areas with 100% cover, adult size (mean and maximum lengths) was greater on exposed sites, but density showed the reverse and was negatively correlated with maximum wave strength (r = −0.84). Despite differences in adult densities and sizes, biomass, which is a product of the two, showed no significant difference between the two shore types (ANOVA P > 0.05). Thus wave exposure dramatically affects density, recruitment and mussel size, but not recruitment timing or biomass where there is 100% cover, and mediates a three-way interaction among food supply, larval supply and intraspecific competition for space. In contrast to shores with saturation recruitment, mussel biomass here appears to be limited by recruit supply and constraints of food, especially on sheltered shores, while density is regulated through intraspecific competition for space primarily on exposed shores and at small spatial scales.]]> Fri 26 Apr 2024 10:45:35 SAST ]]> Mechanisms of habitat segregation between an invasive (Mytilus galloprovincialis) and an indigenous (Perna perna) mussel: adult growth and mortality https://commons.ru.ac.za/vital/access/manager/Repository/vital:6868 Fri 26 Apr 2024 10:42:17 SAST ]]> First oceanographic survey of the entire continental shelf adjacent to the northern Agulhas Current https://commons.ru.ac.za/vital/access/manager/Repository/vital:6867 Fri 26 Apr 2024 10:41:44 SAST ]]> Love thy neighbour : group properties of gaping behaviour in mussel aggregations https://commons.ru.ac.za/vital/access/manager/Repository/vital:6841 Fri 26 Apr 2024 10:40:51 SAST ]]> Effects of patch-size on populations of intertidal limpets, Siphonaria spp., in a linear landscape https://commons.ru.ac.za/vital/access/manager/Repository/vital:6845 60 m in length) were sampled. Across the entire geographic range and throughout the year, there were more of both species of limpets in large patches than in small patches. In most regions, there was greater variability in large patches than small patches. Variability within patches in a single region was similar throughout the year, with greater variability of both species in large than in small patches. We found little influence of the mode of development on the response of limpets to patch-size. Our findings highlight the importance of understanding patterns of distribution of species with respect to habitat heterogeneity in linear landscapes, and contradict the idea that organism mobility at an early ontogenetic stage directly affects habitat use.]]> Fri 26 Apr 2024 10:40:23 SAST ]]> Spatial and temporal variability in recruitment of intertidal mussels around the coast of southern Africa https://commons.ru.ac.za/vital/access/manager/Repository/vital:74658 Fri 02 Aug 2024 10:22:06 SAST ]]>