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161 results for “octopus”
Radiofrequency Ablation Using Octopus Electrodes for Treatment of Focal Liver Malignancies: Follow-up Study
ClinicalTrials.gov study NCT02745483. IPD Sharing: NO. Countries: 1. Publications: 1.
Radiofrequency Ablation Using Octopus Electrodes for Small Hepatocellular Carcinoma With No-touch Technique
ClinicalTrials.gov study NCT03375281. IPD Sharing: NO. Countries: 1. Publications: 1.
Data from: Persistent genetic signatures of historic climatic events in an Antarctic octopus
Open the record for dataset details and reuse information.
Population genomics of an Octopus species identify oceanographic barriers and inbreeding patterns: Demultiplexed reads of 71 Octopus insularis individuals
Open the record for dataset details and reuse information.
Morphological measurements of arm loss for eight octopus species
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Figure 4 in Ultrastructure of spermatozoa and spermatogenesis in Octopus minor (Sasaki, 1920) (Cephalopoda: Octopoda)
Figure 4. Observation of tail of spermatozoon of Octopus minor under TEM. (A) Longitudinal section of the mitochondria and fibrous sheath at middle piece of tail; (B) transverse section of the mitochondria and fibrous sheath at middle piece of tail; (C) transverse section at principal piece; (D) longitudinal section at principal piece; (E) transverse section of the mitochondria sheath at middle piece of tail; (F–H) different transverse sections at principal piece; (I) transverse section at end piece of tail. CM: chondriosomal mantle; CF: coarse fibre; DT: digitiform tuber; FS: fibrous sheath; M: mitochondria; FSR: fibrous sheath remnant.
Figure 3 in Ultrastructure of spermatozoa and spermatogenesis in Octopus minor (Sasaki, 1920) (Cephalopoda: Octopoda)
Figure 3. Observation of head and neck of spermatozoon of Octopus minor under TEM. (A–B) Longitudinal section of spermatozoon at acrosome and anterior nucleus; (C–D) transverse section of acrosome; (E–G) longitudinal section of spermatozoon at nucleus, endonuclear channel and neck; (H) transverse section of spermatozoon at anterior nucleus; (I) transverse section of posterior nucleus. AV: acrosomal vesicle; AVL: acrosomal vesicle lacuna; PT: protuberance; SAL: sub-acrosomal lacuna; ST: striation; SM: skirt membrane; EC: endonuclear channel; CF: coarse fibre.
Figure 1 in Ultrastructure of spermatozoa and spermatogenesis in Octopus minor (Sasaki, 1920) (Cephalopoda: Octopoda)
Figure 1. Spermatophore and spermatozoa of Octopus minor under the light microscope. (A) Spermatophore; (B) sperm mass; (C) cement body; (D) ejaculatory apparatus; (E) the cap thread; (F) enlarged ejaculatory apparatus and cap thread structure; (G) region of connection of cement body and ejaculatory apparatus; (H) spermatozoon; (I) spermatozoa with entangled flagella.
Figure 7 in Morphofunctional characterization and antibacterial activity of haemocytes from Octopus vulgaris
Figure 7. Bactericidal activity (percentage of killing) of Octopus vulgaris haemocytes in the presence of different bacteria.
Figure 2 in Morphofunctional characterization and antibacterial activity of haemocytes from Octopus vulgaris
Figure 2. Light microscopy micrographs of haemocytes stained with acidic toluidine blue revealing their metachromatic property: (A) in vivo haemoblast-like cell; (B) in vivo hyalinocytes containing blue granules; (C) in vivo granulocyte containing red and blue granules; (D) in vivo haemocytes aggregate; (E) fixed haemocytes connected by their filopodia [hyalinocytes (arrowheads) and granulocytes (arrows)]. Scale bar = 5 μm.
Figure 6 in Morphofunctional characterization and antibacterial activity of haemocytes from Octopus vulgaris
Figure 6. Flow cytometric light scatter plots, DNA content and cell cycle analysis of haemocytes from Octopus vulgaris. (A) The left plot shows flow cytometric forward-angle light scatter (FSC) versus side-angle light scatter (SSC) plot on "ungated" sample. The percentage of each population is indicated. The centre plot shows pulse width (PI-W) versus area (PI-A) plot of the PI (propidium iodide) channel used to distinguish between single cells and aggregates. Single cells (G0/1 or G2/M) will have similar pulse width (transit time) values. Aggregates will have larger width values and can be easily seen on the plot to the right of the single cell region. Single cells have been gated (left plot). The right scatter plot shows the FSC versus SSC plot of PIgated cells (single cells). Populations and percentage are indicated; (B) FL2–Area histograms and determination of the cell cycle of each population. The Dean–Jett–Fox model was used to define the G1, S, and G2 phases of the cell cycle. RMS refers to Root Mean Square.
Figure 7 from: Valdez-Cibrián A, Díaz-Santana-Iturrios M, Landa-Jaime V, Michel-Morfín JE (2020) First detection of an ocellate octopus in the Revillagigedos ecoregion, a biodiversity hotspot located in the Tropical East Pacific Province. ZooKeys 986: 81-100. https://doi.org/10.3897/zookeys.986.53250
Figure 7 COI Molecular phylogeny. Molecular phylogeny of COI-gene sequences (474 bp: 193 variable and 281 conserved) of ocellate and non- ocellate octopus species. Ocellated octopuses are bold-faced. Purple rectangle indicates the clade containing the specimens evaluated in this study.
Figure 4 from: Valdez-Cibrián A, Díaz-Santana-Iturrios M, Landa-Jaime V, Michel-Morfín JE (2020) First detection of an ocellate octopus in the Revillagigedos ecoregion, a biodiversity hotspot located in the Tropical East Pacific Province. ZooKeys 986: 81-100. https://doi.org/10.3897/zookeys.986.53250
Figure 4 Coloration patterns. Coloration patterns observed in live individuals of Octopus oculifer from the Revillagigedo Archipelago A pale body with few reddish/brown spots randomly placed throughout the mantle and arms, entire body with a rugose aspect B brown and smooth body with large well-defined white ovals throughout mantle and arms C rugose and reddish body with large cream ovals of different size D red and smoother (still rugose) body with lesser number of cream ovals of different size E dark red body without ovals and a smooth skin.
Figure 6 from: Valdez-Cibrián A, Díaz-Santana-Iturrios M, Landa-Jaime V, Michel-Morfín JE (2020) First detection of an ocellate octopus in the Revillagigedos ecoregion, a biodiversity hotspot located in the Tropical East Pacific Province. ZooKeys 986: 81-100. https://doi.org/10.3897/zookeys.986.53250
Figure 6 COIII Molecular phylogeny. Molecular phylogeny of COIII-gene sequences (273 bp: 136 variable and 137 conserved) of ocellate and non- ocellate octopus species. Ocellated octopuses are bold-faced. Purple rectangle indicates the clade containing the specimens evaluated in this study.
Figure 5 from: Valdez-Cibrián A, Díaz-Santana-Iturrios M, Landa-Jaime V, Michel-Morfín JE (2020) First detection of an ocellate octopus in the Revillagigedos ecoregion, a biodiversity hotspot located in the Tropical East Pacific Province. ZooKeys 986: 81-100. https://doi.org/10.3897/zookeys.986.53250
Figure 5 Length-weight relationship of Octopus oculifer from the Revillagigedo Archipelago A number of individuals per size class B length-weight plot.
Figure 3 from: Valdez-Cibrián A, Díaz-Santana-Iturrios M, Landa-Jaime V, Michel-Morfín JE (2020) First detection of an ocellate octopus in the Revillagigedos ecoregion, a biodiversity hotspot located in the Tropical East Pacific Province. ZooKeys 986: 81-100. https://doi.org/10.3897/zookeys.986.53250
Figure 3 Morphological features. Morphological features of Octopus oculifer from the Revillagigedo Archipelago A dorsal view; H: hectocotylus, LI-IVA: left arms I-IV B ventral view; LI-IVA: left arms I-IV C ligula Lg and calamus Cl D H: hectocotylus, radulae E funnel organ shape F demibranch G upper and lower beaks.
Data from: Thorson's rule, life history evolution and diversification of benthic octopuses (Cephalopoda: Octopodoidea)
Here we evaluate the so-called Thorson's rule, which posits that direct-development and larger eggs are favored towards the poles in marine organisms and whose validity been the subject of considerable debate in the literature, combining an expanded phenotypic dataset encompassing 60 species of benthic octopuses with a new molecular phylogeny. Phylogenetic reconstruction shows two clades: clade 1 including species of the families Eledonidae, Megaleledonidae, Bathypolypodidae and Enteroctopodidae, and clade 2 including species of Octopodidae. Egg size, development mode and all environmental variables exhibited phylogenetic signal, partly due to differences between the two clades: whereas most species in clade 1 inhabit cold and deep waters, exhibit large eggs and hatchling with holobenthic development, species from clade 2 inhabit tropical-temperate and shallow waters, evolved small eggs and generally exhibit merobenthic development. Phylogenetic regressions show that egg size exhibits a conspicuous latitudinal cline, and that both egg size and development mode vary with water temperature. Additionally, analyses suggest that egg size is constrained by body size in lineages with holobenthic development. Taken together, results suggest that the variation in egg size and development mode across benthic octopuses is adaptive and associated with water temperature, supporting Thorson's rule in these organisms.
FIGURE 2 in Octopus djinda (Cephalopoda: Octopodidae): a new member of the Octopus vulgaris group from southwest Australia
FIGURE 2. Live Octopus djinda, sp. nov. specimen. Photo, Mark Norman.
Fig. 23 in Eleven New Species of Dicyemids (Phylum Dicyemida) from Octopus longispadiceus and O. tenuicirrus (Mollusca: Cephalopoda: Octopoda) in Japanese Waters
Fig. 23. Dicyemodeca kukii sp. nov., drawn from syntype specimens on slide NSMT-Me-57: a, nematogen, entire; b, rhombogen, entire; c, d, nematogen, anterior region; e, f, vermiform embryo within axial cell, cilia omitted (e), optical section (f); g, rhombogen, anterior region; h, infusorigen; i–k, infusoriform embryos, dorsal view (i; cilia omitted), ventral view (j; cilia omitted), sagittal section (k). Scale bars: 100 µm in a, b, 10 µm in c–k.
Fig. 20 in Eleven New Species of Dicyemids (Phylum Dicyemida) from Octopus longispadiceus and O. tenuicirrus (Mollusca: Cephalopoda: Octopoda) in Japanese Waters
Fig. 20. Dicyemennea tobaense sp. nov., photographs of syntype specimens on slide NSMT-Me-55: a, nematogen, anterior region; b, rhombogen, entire; c, d, vermiform embryos within axial cell; d, e, rhombogen, anterior region (frontal view); f, spherical hollow cell masses within the axial cell; g, infusorigen; h, i, infusoriform embryos, horizontal section (h), sagittal section (i). Scale bars: 50 µm in a, b, 10 µm in c–i.
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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)
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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.