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19 results for “Millepora”
Metadata: Microsatellite genotypes for Seriatopora hystrix and Acropora millepora in Indonesia
<p>Microsatellite genotypes for <em>Seriatopora hystrix</em> and <em>Acropora millepora</em> in Indonesia as used in the paper "Differences in genetic diversity and divergence between brooding and broadcast spawning corals across two spatial scales in the Coral Triangle region."</p>
Data from: Transcriptomic differences between day and night in Acropora millepora provide new insights into metabolite exchange and light-enhanced calcification in corals
The evolutionary success of reef-building corals is often attributed to their symbiotic relationship with photosynthetic dinoflagellates of the genus Symbiodinium, but metabolic interactions between the partners and the molecular bases of light-enhanced calcification (LEC) are not well understood. Here, the metabolic bases of the interaction between the coral Acropora millepora and its dinoflagellate symbiont were investigated by comparing gene expression levels under light and dark conditions at the whole transcriptome level. Among the 497 differentially expressed genes identified, a suite of genes involved in cholesterol transport was found to be upregulated under light conditions, confirming the significance of this compound in the coral symbiosis. Although ion transporters likely to have roles in calcification were not differentially expressed in this study, expression levels of many genes associated with skeletal organic matrix composition and organization were higher in light conditions. This implies that the rate of organic matrix synthesis is one factor limiting calcification at night. Thus, LEC during the day is likely to be a consequence of increases in both matrix synthesis and the supply of precursor molecules as a result of photosynthetic activity.
Data from: Millepora in Pleistocene coral reefs of Egypt
<p><span><em><span>Millepora</span></em><span>, a hydrozoan coral, is a common component in modern tropical reefs throughout the world. In ecological and palaeoecological surveys it is often grouped with scleractinian corals, which are the prevailing builders of coral reefs. On modern, current-exposed reefs in the Red Sea, <em>Millepora </em>can become the dominant coral. However, it is rarely found in fossil reefs and if present, its abundance is usually considerably lower than in modern reefs. The mismatch is often explained by a low preservation potential of the milleporid skeleton in the fossil record. We explore <em>Millepora </em>abundances in Pleistocene reefs of Egypt using 29 line transects (typically of 20 m length), and find its abundances to be comparable to that of adjacent modern reefs (between 0 and 18.8 </span><span>± 8.5 % per site)</span><span>. Comparisons between sites with and without <em>Millepora</em> suggest that site specific environmental characteristics determine the presence of <em>Millepora </em>in the fossil reef. We conclude that a lack of preservation of habitats preferred by <em>Millepora </em>instead of the preservation potential of the hydrozoan itself is the most plausible reason for the mismatch between modern and fossil abundances. <br></span></span></p>
Data from: Millepora in Pleistocene coral reefs of Egypt
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Data from: Transcriptomic differences between day and night in Acropora millepora provide new insights into metabolite exchange and light-enhanced calcification in corals
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FIGURE 1 in Millepora platyphylla (Cnidaria, Hydrozoa) range extended back to the Eastern Pacific, thanks to a new record from Clipperton Atoll
FIGURE 1. Colony of Millepora platyphylla at Clipperton Atoll with an endemic angelfish Holacanthus limbaughi, depth: 28m. Hammer size: 25cm.
Parentage analyses identify local dispersal events and sibling aggregations in a natural population of Millepora hydrocorals, a free-spawning marine invertebrate
<p><span><span><span><span><span><span><span><span><span><span><span>Dispersal is a critical process for the persistence and productivity of marine populations. For many reef species, there is increasing evidence that local demography and self-recruitment have major consequences on their genetic diversity and adaptation to environmental change. Yet empirical data of dispersal patterns in reef-building species remain scarce. Here, we document the first genetic estimates of self-recruitment and dispersal distances in a free-spawning marine invertebrate, the hydrocoral <i>Millepora platyphylla</i>. Using twelve microsatellite markers, we gathered genotypic information from 3,160 georeferenced colonies collected over 9,000 m<sup>2</sup> of a single reef in three adjacent habitats in Moorea, French Polynesia; the mid slope, upper slope, and back reef. Although the adult population was predominantly clonal (85% were clones), our parentage analysis revealed a moderate self-recruitment rate with 8 to 37% of sexual propagules produced locally. Assigned offspring often settled at less than 10 meters from their parents and dispersal events decrease with increasing geographic distance. There were no discrepancies between the dispersal distances of offspring assigned to parents belonging to clonal <i>versus</i> non-clonal genotypes. Inter-habitat dispersal events via cross-reef transport were also detected for sexual and asexual propagules. Sibship analysis showed that full siblings recruit together on the reef (more than 40% settled at < 30 m), resulting in sibling aggregations. Our findings highlight the importance of self-recruitment together with clonality in stabilizing population dynamics, which may ultimately enhance local sustainability and resilience to disturbance.</span></span></span></span></span></span></span></span></span></span></span></p>
Connectivity Matrices from biophysical modelling studies for A. millepora coral larvae in the Great Barrier Reef (Australia); present day and future scenarios
<p>These data contain connectivity matrices from biophysical modelling simulations of the dispersal of <em>Acropora millepora</em> coral larvae in the southern Great Barrier Reef (Australia), under present-day and future climate scenarios. The connectivity matrices represent modelled strength of larval transfer from one reef to another, and were obtained using a coupled reef-scale, high-resolution, depth-integrated finite element hydrodynamic model (SLIM) of water currents in the Great Barrier Reef, and Individual-Based particle tracking module. Biological parameters to model larval acquisition and loss of competency and mortality were based on the results of experiments detailed in the related journal article. We include connectivity matrices for 2 different water temperature scenarios representing current and future climates, for three different recent spawning seasons (2008, 2009, 2010), and also for scenarios where low-frequency currents through the domain are modulated to mimic the likely effects from future changes to large-scale circulation extracted from CMIP5 global climate models.</p> <p>We also include files summarising the relative changes, per reef, to certain key connectivity metrics between the 2 temperature scenarios (dispersal distance, local retention, number of incoming connections, "source index", and present day "source index" - all metrics are defined in the related journal article and Methods section of this metadata), averaged over all 3 spawning seasons modelled, as plotted in Figs 1a-e in the related journal article. Additionally, we include a separate file summarising changes to reef recovery times following a disturbance to coral cover between the 2 temperature scenarios, per reef, as modelled using the meta-population model described in the related journal article, and as shown in Fig 2 of the article.</p>
Connectivity Matrices from biophysical modelling studies for A. millepora coral larvae in the Great Barrier Reef (Australia); present day and future scenarios
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Parentage analyses identify local dispersal events and sibling aggregations in a natural population of Millepora hydrocorals, a free-spawning marine invertebrate
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Data from: Historical and contemporary factors shape the population genetic structure of the broadcast spawning coral, Acropora millepora, on the Great Barrier Reef
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Whole Transcriptome analysis of the coral acropora millepora reveals complex responses to ocean acidification during the initiation of calcification
GEO Series GSE33016. Acropora millepora. 9 samples. Type: Expression profiling by high throughput sequencing.
Transcriptomic differences between day and night in Acropora millepora provide new insights into metabolite exchange and light-enhanced calcification in corals
GEO Series GSE70488. Acropora millepora. 6 samples. Type: Expression profiling by high throughput sequencing.
The acute transcriptional response of the coral Acropora millepora to immune challenge: expression of GiMAP/IAN genes links the innate immune response of corals with those of mammals and plants
GEO Series GSE46389. Acropora millepora. 12 samples. Type: Expression profiling by high throughput sequencing.
Molecular response of the coral Acropora millepora to three settlement and/or metamorphosis induced stimuli
GEO Series GSE11709. Acropora millepora. 19 samples. Type: Expression profiling by array.
Transcriptomic analysis of the response of Acropora millepora to hypo-osmotic stress provides insights into DMSP biosynthesis by corals
GEO Series GSE96916. Acropora millepora. 45 samples. Type: Expression profiling by high throughput sequencing.
Comparative proteomic study of non-bleached and bleached specimens of the Millepora complanata holobiont following the 2015-2016 ENSO in the Mexican Caribbean
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High natural gene expression variation in the reef-building coral Acropora millepora: Potential for acclimative and adaptive plasticity
GEO Series GSE42684. Acropora millepora. 22 samples. Type: Expression profiling by array.
Acropora millepora adult samples: Control vs medium and high ocean acidification treatment
GEO Series GSE28697. Acropora millepora. 27 samples. Type: Expression profiling by array.
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