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48 results for “Octopoda”
Figure 13 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 13. Grimpoteuthis challengeri sp. nov: internal anatomy. Dorsal and ventral views of the male reproductive system (BMNH 20030376) (A). Ventral view of the female reproductive system (BMNH 20030377) (B). Scale bars = 10 mm.
Figure 12 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 12. Grimpoteuthis challengeri sp. nov: internal anatomy. Ventral view of the viscera in situ (A); detail of the digestive system (B); optic nerve and white body (C) lower and upper beaks (D); dorsal, ventral and lateral view of shell (E: all BMNH 20030376). Scale bars = 15 mm (A); 20 mm (B,E); 10 mm (C,D).
Figure 11 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 11. Grimpoteuthis challengeri sp. nov: external anatomy. Dorsal (A), ventral (B) and oral (C) views (all BMNH 20030375); oral view of first arm (D: BMNH 20030375), with detail of female (E: BMNH 20030377) and male suckers (F: BMNH 20030375). Scale bars = 50 mm (A,B,D); 100 mm (C); 5 mm (E,F).
Figure 6 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 6. Scanning electron micrographs of the radulae of Grimpoteuthis wuelkeri (A,B), G. boylei sp. nov. (C,D) and G. challengeri sp. nov. (E,F).
Figure 7 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 7. Grimpoteuthis wuelkeri: internal anatomy. Dorsal and ventral view of the male reproductive system (A: BMNH 20030368); ventral view of female reproductive system (B: DC-SOC: Discovery 50510). Scale bars = 15 mm (A); 25 mm (B).
Figure 8 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 8. Grimpoteuthis boylei sp. nov: external anatomy. Dorsal (A), ventral (B) and oral (C) views (all BMNH 20030371); oral view of first arm of male (D) with detail of suckers (E: both BMNH 20030370). Scale bars = 100 mm (A,B,C,D); 10 mm (E).
Figure 4 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 4. Grimpoteuthis wuelkeri: external anatomy. Ventral (A), dorsal (B) views of the holotype (ZUB 36372); oral view, orientated with dorsal arms up (C: BMNH???? (BMNH 20030369)); oral surface of first arm (D: holotype ZUB 36372), with detail of suckers and cirri (E: BMNH 20030369). Scale bars = 50 mm (A-C); 25 mm (D) and 5 mm (E).
Figure 5 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 5. Grimpoteuthis wuelkeri: internal anatomy. Ventral view of viscera of the holotype (A: ZUB 36372) and mature female (B: BMNH 20030369); digestive system (C); lower and upper beaks (D) optic nerve, white body and posterior salivary glands (E: all BMNH 20030369); dorsal ventral and lateral views of the shell of the holotype (F: ZUB 36372). Scales
Figure 3 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 3. Photographs of Grimpoteuthis wuelkeri (A), G. boylei sp. nov. (B), G. challengeri sp. nov. (C) and G. discoveryi sp. nov (D). Scale bars = 100 mm (A-C); 40 mm (D).
Figure 16 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 16. Grimpoteuthis discoveryi sp. nov: internal anatomy. Dorsal and ventral views of the male reproductive system (A: BMNH 20030378). Ventral view of the female reproductive system (B: BMNH 20030381). Scale bars = 20 mm.
Figure 9 in The genus Grimpoteuthis (Octopoda: Grimpoteuthidae) in the north-east Atlantic, with descriptions of three new species
Figure 9. Grimpoteuthis boylei sp. nov: internal anatomy. Ventral view of the viscera in situ (A: BMNH 20030371); the digestive system (B); optic nerve and white body (C); lower and upper beaks (D); dorsal, ventral and lateral view of shell (E: all BMNH 20030374). Scale bars = 20 mm (A,B,E); 10 mm (C,D).
FIGURE 2. a in A field guide to distinguishing Octopus insularis and Octopus americanus (Octopoda: Octopodidae)
FIGURE 2. a.) Octopus insularis from Brazil (photo by Diogo Pagnoncelli/Projeto Cephalopoda). Arrow indicates the pattern of dark "patches" against the light background on the ventral arms that can be used to distinguish the species from b.) Octopus americanus from Brazil (photo by Fernando Moraes) with a uniform pattern on the ventral surface of the arms.
FIGURE 1 in A field guide to distinguishing Octopus insularis and Octopus americanus (Octopoda: Octopodidae)
FIGURE 1. The geographic ranges of Octopus insularis and O. americanus. The currently-recognized range of O. americanus is indicated in blue (from Avendano et al. 2020a), the currently-recognized range of O. insularis in orange (from Lima et al. 2017) and the proposed range extensions for O. insularis are indicated in green (this publication).
FIGURE 4 in A field guide to distinguishing Octopus insularis and Octopus americanus (Octopoda: Octopodidae)
FIGURE 4. Representative photographs of O. insularis from regions north of its currently-recognized range. a.) In the Turks and Caicos Islands, showing dark patches on the ventral arms taken in <2 m of water at approximately 27°C (photo by CEO). b.) In south Florida, showing the dark patches on the ventral arms and deimatic display with the light ring around the eye and dark eye bar taken in 24 m of water at 29°C (photo by Mark Kosarin) c.) In the Bahamas, showing a deimatic display with the light ring around the eye and dark eye bar taken in 8 m of water at approximately 28°C (photo by Shane Gross). d.) In Bermuda, showing darks patches on ventral arms and captured in 1 m of water (photo by Nesta Wellman at the Bermuda Aquarium, Museum and Zoo).
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.
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.
Fig. 19 in Eleven New Species of Dicyemids (Phylum Dicyemida) from Octopus longispadiceus and O. tenuicirrus (Mollusca: Cephalopoda: Octopoda) in Japanese Waters
Fig. 19. Dicyemennea desmocephalum sp. nov., drawn from syntype specimens on slide NSMT-Me-55: a, nematogen, entire; b, rhombogen, entire; c, young nematogen, entire; d, e, vermiform embryo within axial cell, cilia omitted (d), optical section (e); f, infusorigen; g–i, infusoriform embryos, dorsal view (g; cilia omitted), ventral view (h; cilia omitted), sagittal section (i). Scale bars: 50 µm in a, b, 10µm in c–f, 5 µm in g–i.
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
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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.