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700 results for “Scleractinia”
The new systematics of Scleractinia: integrating molecular and morphological evidence
<p>Phylogenetic data matrix of 12 DNA markers and BEAST input file for time-calibrated trees of 576 Scleractinia species</p>
Alignments used for the phylogenies in "Caryophylliids (Anthozoa, Scleractinia) have a mitochondrial gene rearrangement: lesson learned from mitochondrial and nuclear phylogenomics"
<p>"mitochondrial_caryotree.phy": concatenated alignment of mitochondrial data in phylip format; "mitochondrial_caryotree.partitions.txt": indication of start/stop positions of each partition in the mitochondrial data alignment; "nuclear_caryotree_55taxa-50p.phylip": alignment of nuclear exons and ultraconserved elements in phylip format.</p>
Scleractinia lifestyle
<p>A collection, from the literature and from individual experts, of traits relating to growth form, lifestyle and reproduction of scleractinia.</p>
Scleractinia lifestyle
A collection, from the literature and from individual experts, of traits relating to growth form, lifestyle and reproduction of scleractinia.<p></p>
FIG. 1 in Mushroom corals (Scleractinia, Fungiidae) of Espiritu Santo (Vanuatu, West Pacific), with the description of a new species
FIG. 1. — Map of Vanuatu indicating the position of Espiritu Santo and the sampled area.
Transcriptome-based target-enrichment baits for stony corals (Cnidaria: Anthozoa: Scleractinia)
<p>Bait sets, sequences, trees and scripts</p>
FIGURE 2 in The putative endemic Mexican reef coral Porites baueri Squires 1959 (Scleractinia Poritidae) is a synonym of the widespread coral Porites lobata Dana 1846
FIGURE 2. Results of canonical discriminant analysis showing the corallite variation of Porites species. Crosses = P. lobata, circles = P. lobata type (USNM652), squares = P. baueri type (AMNH3348), diamonds = P. paschalensis type (USNM68279), triangles = P. excavata type (YPM1677A). Notice that the full variation of P. baueri corallites (close squares) fall within P. lobata (crosses) corallite variation.
Cryptic species and genetic connectivity among populations of the coral Pocillopora damicornis (Scleractinia) in the tropical southwestern Pacific
<p>Studying population genetic connectivity (i.e., identifying gene flow among populations and understanding their impacts on the genetic structure and diversity of populations) is first a matter of knowing what we work on, that is, accurately delimiting evolutionary units. Here, we focused on <em>Pocillopora damicornis</em> sensu stricto (or <em>Pocillopora </em>PSH04 sensu Gélin et al. in Mol Phylogenet Evol 109:430–446. http://dx.doi.org/10.1016/j.ympev.2017.01.018, 2017). From 458 colonies sampled within the tropical southwestern Pacific [Chesterfield Islands and New Caledonia (Grande Terre and Loyalty Islands)], Bayesian assignments and network analyses were conducted with 11-microsatellite loci to first evaluate the genetic partitioning of the colonies in distinct Secondary Species Hypotheses (SSHs), then in distinct clusters. Population genetic connectivity was then assessed for each cluster separately. <em>Pocillopora </em>PSH04 was partitioned into two highly differentiated SSHs (SSH04a and SSH04b), regularly found in sympatry. Furthermore, SSH04a was subdivided into two clusters (SSH04a-1 and SSH04a-2). This pattern of genetic structuring seems not related to clonality, but rather to the establishment of reproductive barriers. Nevertheless, considering each cluster separately, the populations appeared highly differentiated, suggesting relatively weak gene flow. This low connectivity among populations, coupled with the existence of cryptic species, brings new insights to the connectivity pattern of this understudied Pacific region.</p> <p>This dataset contains the microsatellite genotypes analysed (458 <em>Pocillopora</em> PSH04 colonies × 13 loci).</p>
Data from: Genetic assessment of population structure and connectivity in the threatened Mediterranean coral Astroides calycularis (Scleractinia, Dendrophylliidae) at different spatial scales
Understanding dispersal patterns, population structure and connectivity among populations is helpful in the management and conservation of threatened species. Molecular markers are useful tools as indirect estimators of these characteristics. In this study we assess the population genetic structure of the endemic Mediterranean coral Astroides calycularis in the Alboran Sea at local and regional scales, and at three localities outside of this basin. Bayesian clustering methods, traditional F-statistics and Dest statistics were used to determine the patterns of genetic structure. Likelihood and coalescence approaches were used to infer migration patterns and effective population sizes. The results obtained reveal a high level of connectivity among localities separated by as much as one kilometer and moderate levels of genetic differentiation among more distant localities, somewhat corresponding with a stepping-stone model of gene flow and connectivity. These data suggest that connectivity among populations of this coral is mainly driven by the biology of the species, with low dispersal abilities; in addition, hydrodynamic processes, oceanographic fronts and the distribution of rocky substrate along the coastline may influence larval dispersal.
Data from: Blind to morphology: genetics identifies several widespread ecologically common species and few endemics among Indo-Pacific cauliflower corals (Pocillopora, Scleractinia)
AIM: Using high-resolution genetic markers on samples gathered from across their wide distributional range, we endeavoured to delimit species diversity in reef-building Pocillopora corals. They are common, ecologically important, and widespread throughout the Indo-Pacific, but their phenotypic plasticity in response to environmental conditions and their nearly featureless microskeletal structures confound taxonomic assignments and limit an understanding of their ecology and evolution. LOCATION: Indo-Pacific, Red Sea, Arabian/Persian Gulf. METHODS: Sequence analysis of nuclear ribosomal (internal transcribed spacer 2, ITS2) and mitochondrial (open reading frame) loci were combined with population genetic data (seven microsatellite loci) for Pocillopora samples collected throughout the Indo-Pacific, Red Sea and Arabian Gulf, in order to assess the evolutionary divergence, reproductive isolation, frequency of hybridization and geographical distributions of the genus. RESULTS: Between five and eight genetically distinct lineages were identified that appear comparable to species with minimal or no hybridization. Colony morphology was generally incongruent with genetics across the full range of sampling, and the total number of species is apparently consistent with lower estimates from competing morphologically based hypotheses (c. seven or eight taxa). The most commonly occurring genetic lineages were widely distributed and exhibited high dispersal and gene flow, factors that have probably minimized allopatric speciation. Uniquely among scleractinian genera, this genus contains a monophyletic group of broadcast spawners that evolved recently from an ancestral brooder. MAIN CONCLUSIONS: The delineation of species diversity guided by genetics fundamentally advances our understanding of Pocillopora geographical distributions, ecology and evolution. Because traditional diagnostic features of colony and branch morphology are proving to be of limited utility, the identification of Pocillopora species for future ecological and experimental work should rely on genetic characters that will improve research and aid in conservation strategies for these and other reef-building corals, including the detection of real and mistaken endemic populations.
Data from: A population genomics insight by 2b-RAD reveals populations' uniqueness along the Italian coastline in Leptopsammia pruvoti (Scleractinia, Dendrophylliidae).
Aim: Marine bioconstructions such as coralligenous formations are hot spot of biodiversity and play a relevant ecological role in the preservation of biodiversity by providing carbon regulation, protection and nursery areas for several marine species. For this reason, the European Union Habitat Directive included them among priority habitats to be preserved. Despite their ecological role is well-established, connectivity patterns are still poorly investigated, representing a limit in conservation planning. The present study pioneers a novel approach for the analysis of connectivity in marine bioconstructor species, which often lack suitable genetic markers, by taking advantage of next generation sequencing techniques. We assess the geographical patterns of genomic variation of the sunset cup coral Leptopsammia pruvoti Lacaze-Duthiers, 1897, an ahermatypic, non-zooxanthellate and solitary scleractinian coral species common in coralligenous habitats and distributed across the Mediterranean Sea. Location: The Italian coastline (Western and Central Mediterranean). Methods: We applied the restriction site associated 2b-RAD approach to genotype over 1,000 high quality and filtered Single Nucleotide Polymorphisms in 10 population samples. Results: The results revealed the existence of a strongly supported genetic structure, with highly significant pairwise FST values between all the population samples, including those collected about 5 kilometers apart from each other. Moreover, genomic data indicates that the strongest barriers to gene flow are between the western (Ligurian-Tyrrhenian Sea) and the eastern side (Adriatic Sea) of the Italian peninsula. Main conclusions: The strong differentiation found in L. pruvoti, is similar to that found in other species of marine bioconstructors investigated in this area, but it strongly contrasts with the small differences found in many fish and invertebrates at the same geographic scale. All in one, our results highlight the importance of assessing connectivity in species belonging to coralligenous habitats as, due to their limited dispersal ability, they might require specific spatial conservation measures.
FIGURE 1 in Acropora rongelapensis sp. nov., a new species of Acropora from the Marshall Islands (Scleractinia: Astrocoeniina: Acroporidae)
FIGURE 1. Acropora rongelapensis (A) Paratype G57576 in situ at Rongelap Atoll lagoon, Marshall Islands; (B) closeup of A; (C) portion paratype G57575 (DF) holotype specimen G57574 (E) electron micrograph of holotype showing axial and radial corallites (F) electron micrograph of holotype showing coenosteum between radial corallites.
FIGURE 2. Calathiscus tantillus, n.gen., n in coral (Scleractinia, Poritidae) from the Gulf of Oman
FIGURE 2. Calathiscus tantillus, n.gen., n.sp. Details of the corallites A. Paratype (FLMNH, UF535). B. Paratype (IRSNB, IG30190).
FIGURE 1. Calathiscus tantillus, n. gen., n in coral (Scleractinia, Poritidae) from the Gulf of Oman
FIGURE 1. Calathiscus tantillus, n. gen., n.sp. Holotype: A. View of the corallum. B. Details of the corallites.
FIGURE 4. Calathiscus tantillus, n.gen., n in coral (Scleractinia, Poritidae) from the Gulf of Oman
FIGURE 4. Calathiscus tantillus, n.gen., n.sp. A. Holotype. Underwater micrograph of the live colony. B. Details of a colony showing the typical aspects of the expanded polyps.
FIGURE 3. Calathiscus tantillus, n. gen., n in coral (Scleractinia, Poritidae) from the Gulf of Oman
FIGURE 3. Calathiscus tantillus, n. gen., n.sp. SEM micrograph. A. normally calcified specimen. Note the ventral triplet of septa and the irregular pattern of septal fusion. B. lightly calcified specimen with incomplete synapticular ring around the central fossa.
FIGURE 3. Porites randalli spec. nov. SEM image showing corallite details. A in Porites randalli: a new coral species (Scleractinia, Poritidae) from American Samoa
FIGURE 3. Porites randalli spec. nov. SEM image showing corallite details. A: Holotype (SC 4161); B: Paratype and genetic sample # AS13 ()
FIGURE 1. Bayesian tree modified from Figure 1 in Porites randalli: a new coral species (Scleractinia, Poritidae) from American Samoa
FIGURE 1. Bayesian tree modified from Figure 1 in Forsman et al. 2009. Significant clades are collapsed to conserve space. The base of the triangles are proportionate to the number of sequences sampled, the height of the triangle is proportionate to the genetic divergence within the clade (the Porites sp. 2 clade is expanded). Thick black lines represent clade support values higher than 80% for Baysean, Neighbor Joining, and Maximum Parsimony methods. See Forsman et al. 2009 for complete details.
FIGURE 4 in Porites randalli: a new coral species (Scleractinia, Poritidae) from American Samoa
FIGURE 4. Porites randalli spec. nov.: Photographs of living colonies. A. P. randalli (left), next to P. lichen (right). B: Close up of whole P. randalli colony.
FIGURE 4. Cantellius sextus. Hard parts. A in A new species of Cantellius and a redescription of C. sextus (Hiro, 1938) (Cirripedia, Balanomorpha Pyrgomatidae) from the elephant skin coral, Pachyseris speciosa (Dana, 1846) (Scleractinia, Agariciidae) from Taiwan
FIGURE 4. Cantellius sextus. Hard parts. A) Inner view of parietes under SEM; B) inner view of one of the paries; C) scutum, outer view; D) scutum, inner view; E) apical end of scutum showing honeycomb-like structure; F) tergum, outer view; and G) tergum, inner view.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.