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69 results for “Dinophyceae”
Fig. 3 in New record of the cold freshwater dinoflagellate Palatinus apiculatus (Dinophyceae) from the Paldang Reservoir, Korea
Fig. 3. Scanning electron microscrope micrographs of Palatinus apiculatus isolated from the Paldang Reservoir, Korea. Plates of the theca are indicated, following to Kofoidian plate formula. A: ventral view showing sulcal region; B, C: apical view from the ventral side; D-F: dorsal view showing different wide of suture and variation of the cingular plate (v). Thick black bar in D-F represents each given length. Sa: anterior sulcal plate. Sd: right sulcal plate. Sp: posterior sulcal plate. Ss: left sulcal plate. Scale bar = 10 μm.
Fig. 2 in New record of the cold freshwater dinoflagellate Palatinus apiculatus (Dinophyceae) from the Paldang Reservoir, Korea
Fig. 2. Vegetative cells (A, C) and temporary cysts (B, D) of the Korean Palatinus apiculatus isolated from the Paldang Reservoir. An arrowhead represents an eyespot. Cell size is proportional to a given scale bar (10 μm).
Fig. 4. A maximum likelihood tree constructed from a 28S in New record of the cold freshwater dinoflagellate Palatinus apiculatus (Dinophyceae) from the Paldang Reservoir, Korea
Fig. 4. A maximum likelihood tree constructed from a 28S rDNA dataset of the Korean Palatinus apiculatus and other freshwater dinoflagellates. A total of 5,000 replicates were run for bootstrap analyses. Members of the genus Palatinus are highlighted in orange. The isolate from this study and its GenBank No. are given in bold font.
APPENDIX 1 in Molecular characterization and morpho-taxonomy of Gambierdiscus caribaeus Vandersea, Litaker, M.A.Faust, Kibler, W.C.Holland & P.A.Tester (Dinophyceae) from Mauritius Island, South-West Indian Ocean
APPENDIX 1. — Scanning electron micrographs of Gambierdiscus caribaeus Vandersea, Litaker, M.A.Faust, Kibler, W.C.Holland & P.A.Tester (ISOG4) with aberrant forms: A, ventral view of globular shape cell; B, apical view showing cell with protruding plates. Scale bars: 10 µm.
FIG. 4 in Molecular characterization and morpho-taxonomy of Gambierdiscus caribaeus Vandersea, Litaker, M.A.Faust, Kibler, W.C.Holland & P.A.Tester (Dinophyceae) from Mauritius Island, South-West Indian Ocean
FIG. 4. — Phylogenetic analysis of the Gambierdiscus caribaeus Vandersea, Litaker, M.A.Faust, Kibler, W.C.Holland & P.A.Tester (ISOG4), showing alignment of D1-D2 LSU rDNA sequences using Bayesian inference and Maximum likelihood analyses. Values at nodes represent Bayesian posterior probability support and Bootstrap support. - represents unsupported value. Scale bar is substitution per site.
FIG. 2 in Molecular characterization and morpho-taxonomy of Gambierdiscus caribaeus Vandersea, Litaker, M.A.Faust, Kibler, W.C.Holland & P.A.Tester (Dinophyceae) from Mauritius Island, South-West Indian Ocean
FIG. 2. — Light and scanning electron micrographs of Gambierdiscus caribaeus Vandersea, Litaker, M.A.Faust, Kibler, W.C.Holland & P.A.Tester (ISOG4): A, light micrograph of Gambierdiscus caribaeus Mauritian strain; B, scanning electron micrograph of apical view; C, scanning electron micrograph of antapical view; D, scanning electron micrograph of inside top view of thecal plate pores. Scale bars: A, 50 µm; B, C, 10 µm; D, 100 nm.
Fig. 3 in Detection of Prorocentrum shikokuense in the Mediterranean Sea and evidence that P. dentatum, P. obtusidens and P. shikokuense are three different species (Prorocentrales, Dinophyceae)
Fig. 3. Phylogenetic tree based on D1/D2 LSU rRNA gene sequences, showing the position of the sequence of Prorocentrum shikokuense by Maximum Likelihood (ML). Numbers near branches denote ML bootstrap (BS) and Bayesian posterior probability (PP) values. BS and PP values <70 and 0.8, respectively, are not shown.
Fig. 5. A in Detection of Prorocentrum shikokuense in the Mediterranean Sea and evidence that P. dentatum, P. obtusidens and P. shikokuense are three different species (Prorocentrales, Dinophyceae)
Fig. 5. A comparison of the line drawings in Stein (1883) and micrographs of Tripos eugrammus (A) and Dinophysis tripos (B). The arrows point the Stein's drawing style with acuter appendices than in the real morphology of the cells.
Fig. 2 in Detection of Prorocentrum shikokuense in the Mediterranean Sea and evidence that P. dentatum, P. obtusidens and P. shikokuense are three different species (Prorocentrales, Dinophyceae)
Fig. 2. Phylogenetic tree based on SSU rRNA gene sequences, showing the position of the sequence of Prorocentrum shikokuense by Maximum Likelihood (ML). Numbers near branches denote ML bootstrap (BS) and Bayesian posterior probability (PP) values. BS and PP values <70 and 0.8, respectively, are not shown.
Fig. 4 in Detection of Prorocentrum shikokuense in the Mediterranean Sea and evidence that P. dentatum, P. obtusidens and P. shikokuense are three different species (Prorocentrales, Dinophyceae)
Fig. 4. Phylogenetic tree based on ITS rRNA gene sequences, showing the position of the sequence of Prorocentrum shikokuense by Maximum Likelihood (ML). Numbers near branches denote ML bootstrap (BS) and Bayesian posterior probability (PP) values. BS and PP values <70 and 0.8, respectively, are not shown.
A new species and a new combination in Protoperidinium sect. Oceanica (Peridiniales, Dinophyceae) from Vietnamese waters
<p>In this study, we described and illustrated details of a new species, <em>Protoperidinium vietnamicum</em> sp. nov., from Vietnamese coastal waters and <em>Protoperidinium curvicorne</em> (Böhm) comb. Nov. is proposed as a new combination. Each cell's size range (length, width, and depth) was measured, and the morphological features of both species described here and selected related species in the Oceanica section were compared. In addition, the ecology and distribution of both species were given.</p>
FIG. 1 in Molecular characterization and morpho-taxonomy of Gambierdiscus caribaeus Vandersea, Litaker, M.A.Faust, Kibler, W.C.Holland & P.A.Tester (Dinophyceae) from Mauritius Island, South-West Indian Ocean
FIG. 1. — Map showing the three locations where samples were collected from Mauritius.
A new species and a new combination in Protoperidinium sect. Oceanica (Peridiniales, Dinophyceae) from Vietnamese waters
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Data from: Ecologically differentiated, stress tolerant endosymbionts in the dinoflagellate genus Symbiodinium (Dinophyceae) Clade D are different species.
We used an integrative genetics approach using sequences of (1) nuclear ribosomal rDNA (internal transcribed spacers and partial large subunit rDNA), (2) single-copy microsatellite nuclear DNA, (3) chloroplast-encoded 23S rDNA, (4) mitochondrial cytochrome b, and (5) repeat variation at eight microsatellite markers, to test the hypothesis that the stress-tolerant, 'morphologically cryptic' Clade D Symbiodinium (Dinophyceae) was composed of more than one species. Concordant phylogenetic and population genetic evidence clearly differentiate separately evolving, reproductively isolated lineages. We describe Symbiodinium boreum sp. nov. and S. eurythalpos sp. nov., two symbionts known to occur in colonies of the zebra coral, Oulastrea crispata (Scleractinia), which lives in turbid, marginal habitats extending from equatorial Southeast Asia to the main islands of Japan in the temperate northwest Pacific Ocean. Symbiodinium boreum was associated with O. crispata in temperate latitudes and S. eurythalpos was common to colonies in the tropics. The geographical ranges of both symbiont species overlapped in the subtropics where they sometimes co-occurred in the same host colony. Symbiodinium trenchii sp. nov. is also described. As a host-generalist symbiont, it often occurs in symbiosis with various species of Scleractinia possessing open (horizontal) modes of symbiont acquisition and is common to reef coral communities thriving in warm turbid reef habitats in the western Pacific Ocean, Indian Ocean, Arabian/Persian Gulf, Red Sea and western Atlantic (Caribbean). As is typical for dinoflagellates, S. boreum and S. eurythalpos were haploid, but microsatellite loci from field-collected and cultured S. trenchii often possessed two alleles, implying that a genome-wide duplication occurred during the evolution of this species. The recognition that Clade D Symbiodinium contains species exhibiting marked differences in host specificity and geographical distribution will yield greater scientific clarity about how stress-tolerant symbionts function in the ecological response of coral–dinoflagellate symbioses to global climate change.
FIGURE 1 in Description of Peridiniopsidaceae, fam. nov. (Peridiniales, Dinophyceae)
FIGURE 1. Peridiniaceae and Peridiniopsidaceae, fam. nov., have distinct systematic positions in the peridinialean molecular tree. Maximum Likelihood (ML) tree (–ln=62.863,31) of 89 Peridiniales operational taxonomic units (OTUs; plus 42 Amphidomataceae as outgroup, not shown) under the GTR+Γ substitution model. For alignment constitution, we defined three regions of the rRNA: SSU, ITS, LSU, and included all Peridiniales, of which sequence information in all three regions were available. Freshwater lineages are shaded in green, and the Peridiniopsidaceae, fam. nov., with its type species, Peridiniopsis borgei, are highlighted. Branch lengths are drawn to scale, with the scale bar indicating the number of nucleotide substitutions per site. The numbers on the branches are statistical support values (above: ML bootstrap values derived from 1.000 non-parametric replicates, values <50 are not shown; below: Bayesian posterior probabilities derived from two independent analyses of four chains with 20.000.000 cycles, sampled every 1.000th cycle, values <.90 are not shown). Asterisks indicate maximal support. Abbreviations: BLA: Blastodiniaceae. E/Pe: clade including Ensiculifera and Pentapharsodinium. HET: Heterocapsaceae. KRY: Kryptoperidiniaceae. PER: Peridiniaceae. T/Pf: clade including Pfiesteria and Thoracosphaera. ZOO: Zooxanthellaceae.
FIGURE 3 in First record of the dinoflagellate Metadinophysis sinensis (Dinophysales, Dinophyceae) in the Atlantic Ocean
FIGURE 3. Schematic representation of Metadinophysis sinensis. Morphological variability of cell shape. (A–B) Cells in left lateral view from Camamu Bay. (C–E) Cells from Todos os Santos Bay. (C–D) Left lateral view. (E) Cell in ventral view showing the hypotheca with convex left dorsal plate (H2) and the right (H3) slightly concave in the median region. Note the deflected epitheca (E2, E3) and the curved cell, slightly twisted in the posterior region assuming a sigmoid shape. H1= first left dorsal plate; lpsp= left posterior sulcal plate; rpsp= right posterior sulcal plate; rvhp= right ventral hipothecal plate. Scale bars = 10μm
FIGURE 1 in First record of the dinoflagellate Metadinophysis sinensis (Dinophysales, Dinophyceae) in the Atlantic Ocean
FIGURE 1. Map showing the five sampling locations along the coast of Bahia state: Todos os Santos Bay (BTS), Morro de São Paulo (MSP), Boipeba (BOI), Barra Grande (BG) and Camamu Bay (CB).
FIGURE 2 in First record of the dinoflagellate Metadinophysis sinensis (Dinophysales, Dinophyceae) in the Atlantic Ocean
FIGURE 2. Metadinophysis sinensis: (A–D) Cells from Camamu Bay. (A) Light microscope photograph, left lateral view. (B–D) Scanning electron microscope photographs. (B) Right lateroapical view showing the second (E2) and the third (E3) epithecal plates. Note the straight ventral margin below to left sulcal list (LSL), the convex and crenulate dorsal margin of the left dorsal hypotheca plate (H3), and the posterior pole rounded-truncate. (C) Left lateral view showing the posterior cingular list of the dorsal plate connected to the first rib (R1) of the ventral plate of the hypotheca (arrows), and truncate posterior pole. (D) Sample from Boipeba. Right lateroapical view showing the triangular shape of hypotheca with the two dorsal plates (E2, E3) disposed in different planes. (E–H) Samples from Todos os Santos Bay. (E–F) Epifluorescence micrographs of calcofluor-stained cells. (G–H) Epifluorescence micrographs of calcofluor-stained cells showing red, autofluorescence from discoid chloroplasts. Scale bars = 10μm
FIGURE 13 in Checklist, new records, and taxonomic annotations of freshwater thecate dinoflagellate (Dinophyceae) in Colombia
FIGURE 13. SEM view of Peridinium gatunense. A. Apical view. B. Antapical view. C. Teratological specimen: quadrangular 2a plate. D. Teratological specimen: splitted 1ʹʹʹʹ plate.
FIGURE 18. Sphaerodinium fimbriatum. A Ventral view. B Dorsal view. C SEM ventral view. D. Epithecal plates. E in Checklist, new records, and taxonomic annotations of freshwater thecate dinoflagellate (Dinophyceae) in Colombia
FIGURE 18. Sphaerodinium fimbriatum. A Ventral view. B Dorsal view. C SEM ventral view. D. Epithecal plates. E. Hypothecal plates. Bar= 10 µm.
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These curated guides explain access requirements, typical timelines, costs, and reuse considerations for widely used research datasets.
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.