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668 results for “polychaetes”
Figure 1 in Vrijenhoekia balaenophila, a new hesionid polychaete from a whale fall off California
Figure 1. Relationships between number of segments and length in Vrijenhoekia balaenophila gen. nov., sp. nov. (O), Hesiospina aurantiaca (Sars, 1862) (Δ), Micropodarke dubia (Hessle, 1925) (•), Nereimyra punctata (O.F. Müller, 1776) (Z), Psamathe fusca Johnston, 1840 (Ɨ) and Syllidia armata Quatrefages, 1866 (). Only entire specimens showing no signs of regeneration were recorded.
Figure 5 in Vrijenhoekia balaenophila, a new hesionid polychaete from a whale fall off California
Figure 5. One of the two most parsimonious trees (second tree differing only in the resolution within Vrijenhoekia balaenophila gen. nov., sp. nov). Numerals in italics above branches are node numbers, numerals below branches are jackknife and Bremer support values.
Figure 11 in A phylogenetic analysis of the genus Eunice (Eunicidae, polychaete, Annelida)
Figure 11. Consensuses of 858 most parsimonious trees resulting from reductive analyses. A, Strict consensus, numerals below branches are Bremer support/Bootstrap values; single numerals refer to Bremer support. B, 50% majority rule consensus, numerals below branches represent the percentage of the most parsimonious trees in which the clade is present. C, Adams consensus. *Eunicidae outgroup species; **Onuphidae species.
Figure 1 in A phylogenetic analysis of the genus Eunice (Eunicidae, polychaete, Annelida)
Figure 1. Schematic drawing of the dorsal view of the prostomium and anterior end of peristomium; circles and semicircles represent the arrangement of prostomial appendages (antennae and palps). A, round frontal lips separated by a narrow notch, median antennae isolated by a gap from the other antennae and palps. B, round frontal lips separated by a narrow notch, palps isolated by a gap from the antennae. C, truncate frontal lips separated by a narrow notch, antennae and palps evenly spaced. D, frontal lips separated by a distinct space, antennae and palps evenly spaced.
Figure 2 in A phylogenetic analysis of the genus Eunice (Eunicidae, polychaete, Annelida)
Figure 2. Schematic drawing of the frontal view of specimens that have frontal lips separated by a narrow notch. A, frontal lips dorsally inflated. B, frontal lips dorsally flat. C, frontal lips dorsally dimpled.
Figure 9 in A phylogenetic analysis of the genus Eunice (Eunicidae, polychaete, Annelida)
Figure 9. Strict consensus tree of 200 most parsimonious trees resulting from composite analyses. Tree statistics: length = 200 steps; consistency index = 0.49; retention index = 0.65. Characters optimized on nodes under ACCTRAN, unambiguous characters in bold face and underlined. Characters used for the first time in this study and promising sources of phylogenetic signal are shaded in grey. White and black hashmarks represent homoplasious and non-homoplasious characters, respectively. Bold numerals below branches are Bremer support/Bootstrap values; single numerals refer to Bremer support. Numerals beside square brackets are clade numbers. *Eunicidae outgroup species; **Onuphidae species.
Figure 7. Pharyngeal bulb musculature, ventral view. A in A phylogenetic analysis of the genus Eunice (Eunicidae, polychaete, Annelida)
Figure 7. Pharyngeal bulb musculature, ventral view. A, Eunice cf. torquata Quatrefages, 1866. B, Palola brasiliensis Zanol, Paiva & Attolini, 2000. C, Lysidice ninetta Audouin & Milne Edwards, 1833. F1 + F2, muscle fibre complex F1 + F2 (Desière, 1967); MND, mandibles; MS, muscle; Mx, maxillae.
Figure 12 in A phylogenetic analysis of the genus Eunice (Eunicidae, polychaete, Annelida)
Figure 12. Evolution of subacicular hook. A, B, dentition (character 54) and colour (character 56). Characters optimized on the strict consensus of most parsimonious trees resulting from composite analyses, both characters are unambiguously optimized. *Eunicidae outgroup species; **Onuphidae species.
Figure 4 in A phylogenetic analysis of the genus Eunice (Eunicidae, polychaete, Annelida)
Figure 4. Schematic drawing of the shape the articulations of prostomial appendages. A, short or long cylinders. B, moniliform.
Figure 5. Maxillae. A in A phylogenetic analysis of the genus Eunice (Eunicidae, polychaete, Annelida)
Figure 5. Maxillae. A, Eunice denticulata Webster, 1884 dorsal view. B, C, Eunice rubra Grube, 1856 dorsal view, and detail of maxillae IV (MxIV) and MxV. D, E, Palola brasiliensis Zanol, Paiva & Attolini, 2000 dorsal view, and detail of MxIII, MxIV, and MxV. F, G, Lysidice ninetta Audouin & Milne Edwards, 1833 detail of MxIV and MxV, and dorsal view. MxIII1, front end of MxIII as part of the distal arc; MxIII2, MxIII at least in part located behind MxII; MxIII3, MxIII edentate behind MxII; MxIV1, MxIV with teeth in less than half of the plate; MxIV2, MxIV with teeth in more than half of the plate; MxIV3, MxIV longer than wide, most of the time just with one tooth; MxVI, maxillae VI; MxC1, maxillary carrier greater than half of MxI; MxC2, maxillary carrier smaller than half of MxI.
Figure 4 in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 4. Ophelina margaleffi sp. nov. A, general view. B, lateral view of anterior region. C, mid-region parapodia showing cirriform branchiae and ciliary bands. D, lateral organ observed in the middle of every parapodial lobe (from left to right dorsoventral orientation). E, hirsute capillary chaetae. F, pygidium with six subequal papillae. Scale bars: A, 1 mm; B, C, 100 Mm; F, 50 Mm; E, 10 Mm; and D, 5 Mm.
Figure 3 in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 3. Paradoneis hirsuta sp. nov. A, general view. B, dorsal view of the branchiate region. C, dorsal view of mid-region parapodia. D, long capillary chaetae of both rami of parapodia. E, lyrate chaeta of posterior parapodia. F, pygidium, with three cirri and ciliated dorsal rounded organ. Scale bars: A, 1 mm; D, 500 Mm; B, 300 Mm; C and F, 100 Mm; and E, 10 Mm.
Figure 2 in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 2. Aricidea (Allia) longisetosa sp. nov. A, general view. B, dorsal view of the anterior region. C, mid-region parapodia with long capillary chaetae. D, fascicle of capillary chaetae and modified neurochaetae in medium parapodia. E, detail of modified posterior-region neurochaeta. F, group of branchiae showing cilia. Scale bars: A, 1 mm; B, C, and F, 200 Mm; D, 20 Mm; and E, 10 Mm.
Figure 7 in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 7. Exogone (Parexogone) canyonincolae sp. nov. A, general view. B, dorsal view of the prostomium and the first chaetigers. C, posterior chaetigers showing smooth natatory chaetae. D, mid-region parapodia showing the simple dorsal chaeta and the compound chaetae: one with a spiniger-like blade, and the rest with shorter blades. E, end of the dorsal simple chaeta. F, compound chaetae of mid-region parapodia. Scale bars: A, B, 50 Mm; C, D, 30 Mm; F, 5 Mm; and E, 3 Mm.
Figure 6. Pelagobia longicirrata. A in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 6. Pelagobia longicirrata. A, prostomium with two pairs of antennae. B, gland formations at the anterior of the prostomium. C, detail of B, showing glands and holes with cilia-like structures. D, lateral view of the nuchal organs, including the first chaetiger, where the simple chaeta position is observed (arrow). E, reticulate field of pits with cilia at the nuchal organ. F, view of reticulate area with the extensible cilia-like structure. Scale bars: A, D, 100 Mm; B, 20 Mm; C, F, 5 Mm; and E, 3 Mm.
Figure 5. Pelagobia longicirrata. A, general view. B in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 5. Pelagobia longicirrata. A, general view. B, lateral view of anterior region. C, uniramous group of parapodia showing long dorsal and ventral cirri, and shorter simple chaeta in the anterior region. D, fascicle of heterogomph chaetae showing unidentate tip in the inset. E, pygidium. F, internal jaw. Scale bars: A, 500 Mm; B, 300 Mm; C, 200 Mm; E, 100 Mm; and D, F, 50 Mm (inset D, 3 Mm).
Figure 1 in Polychaete species captured in sediment traps moored in northwestern Mediterranean submarine canyons
Figure 1. Map of the area studied, showing the location of the mooring line sites (black squares). Site A, Planier submarine canyon (traps 1, 2 and 3-vicinity). Site B, Lacaze-Duthiers submarine canyon (traps 5, 6, and 7-vicinity). Site C, Foix submarine canyon (traps 8-vicinity, 9, and 10).
Genetic Features of the Marine Polychaete Sirsoe methanicola from Metagenomic Data
<p>WebAUGUSTUS input and output data used in for eukaryotic gene prediction in <em>Sirsoe methanicola</em>:</p> <p><strong>WebAUGUSTUS input data:</strong></p> <ol> <li>capitella.fa - Nucleotide genomic sequence of <em>Capitella teleta</em> (NCBI accession: GCA_000328365.1)</li> <li>capitella-protein.faa - Protein sequences in the <em>Capitella teleta </em>genome (NCBI accession: GCA_000328365.1)</li> <li>big-contigs-wrapped.fa - Contigs >= 3,000 bp long assembled from the <em>S. methanicola </em>metagenomes (NCBI BioProject ID PRJNA689840) that did not bin into any bacterial MAGs</li> <li>small-contigs-wrapped.fa - Contigs< 3,000 bp long assembled from the <em>S. methanicola </em>metagenomes (NCBI BioProject ID PRJNA689840) that did not bin into any bacterial MAGs</li> </ol> <p><strong>WebAUGUSTUS output data:</strong></p> <ol> <li>augustus.bigcontigs.gff - WebAUGUSTUS GFF output file for contigs >=3,000 bp</li> <li>augustus.smallcontigs.gff - WebAUGUSTUS GFF output file for contigs <3,000 bp</li> <li>augustus.all.faa - All protein sequences predicted from the <em>S. methanicola </em>metagenomes using WebAUGUSTUS</li> </ol>
Fig. 4 in Pectinaria nusalautensis (Pectinariidae, Annelida): a new polychaete species from Maluku, Indonesia
Fig. 4. Close-up of body parts of Pectinaria nusalautensis, new species (MZB. Pol. 00236). A, ventral view of the anterior part; B, transitional region from thorax to abdomen; C, scaphal hooks; D, scaphe (ventral view). Abbreviations: abd = abdomen; af = anal flap; avl = antero-ventral lobe; br = branchia; ch = chaetiger; cv = cephalic veil; cvc = cephalic veil cirri; lh = lateral hump; np = notopodial paleae; or = opercular rim; pp = peristomial palp; savl = small antero-ventral lobe; sh = scaphal hooks; tc = tentacular cirrus; tra = trapezoidal glandular area; tri = triangular glandular area; un = uncini; vf = ventral flap; vl = ventral lappet. Numbers 1–5 are the last five posterior segments forming scaphe. Scale bars: A, B = 2 mm; C = 0.25 mm; D = 1 mm.
Fig. 2 in Pectinaria nusalautensis (Pectinariidae, Annelida): a new polychaete species from Maluku, Indonesia
Fig. 2. Pectinaria nusalautensis, new species (MZB. Pol. 00236). A, dorsal view; B, ventral view. Abbreviations: ag = abdominal glandular area; avl = antero-ventral lobe; br1 = first branchia; br2 = second branchia; cvc = cephalic veil cirrus; dlf = dorso-lateral flap; dlp = dorsolateral pad; lh = lateral hump; no = notopodium; np = notopodial palea; op = opercular plate; or = opercular rim; pp = peristomial palp; savl = small antero-ventral lobe; tra = trapezoidal glandular area; tri = triangular glandular area; vf = ventral flap; vl = ventral lappet. Scale bar = 2 mm.
ScienceDex guides
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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.