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44 results for “Nematocysts”
Figure 4. Nematocysts. 4A in Lobataria newtoni gen. et sp. nov., (Hydrozoa, Anthoathecata, Tubulariidae) from southern Australia
Figure 4. Nematocysts. 4A: stenotele (i) from gonophore flange. 4B: stenotele (ii) from oral tentacles. 4C: stenotele (iii) from aboral tentacles. 4D: stenotele (iv) from tentacles. 4E: desmonene from tentacles. 4F: microbasic mastigophore from aboral tentacles. Scale bar: 10 μm.
High-speed videos of siphonophore tentilla and nematocyst discharge
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FIGURE 7. A Plumularia floridana Nutting, 1900, nematocysts microbasic mastigophore. B–G Dynamena crisioides Lamouroux, 1824 in Taxonomy and diversity of Hydrozoa (Cnidaria, Medusozoa) of La Paz Bay, Gulf of California
FIGURE 7. A Plumularia floridana Nutting, 1900, nematocysts microbasic mastigophore. B–G Dynamena crisioides Lamouroux, 1824: B, colony; C, hydrocaulus; D, hydrothecae; E–F, gonothecae; G, nematocysts large microbasic eurytele. H–K Clytia cf. gracilis (M. Sars, 1850): H, polyp; I, hydrotheca; J, acute triangular cusps; K, hydrothecal diaphragm. Scale equals A—332 µm; B—0.4 mm; C, E—500 µm, D, F, H, I—200 µm; G—17 µm; J—160 µm, K—50 µm.
FIGURE 2. Lafoeina amirantensis. Nematocysts. A in Lafoeina amirantensis (Cnidaria: Hydrozoa, Campanulinoidea), the hydroid stage of the medusa Cirrholovenia tetranema (Cnidaria: Hydrozoa, Lovenelloidea)
FIGURE 2. Lafoeina amirantensis. Nematocysts. A) Microbasic mastigophore of umbrella of newly released medusa. B) Atrichous isorhiza from polyp column. C) Basitrichous isorhiza from polyp tentacle. D) Basitrichous isorhiza from medusa tentacle. E) Atrichous isorhiza (arrows) from medusa tentacle bulb. F) Microbasic mastigophore from nematophore. Scale bar = 10 µm.
Eluding anemone nematocysts: are clownfish deprived of N-acetylated sugars on their surface?
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FIGURE 4 in Two species of Edwardsia having gigantic nematocysts, E. aff. tuberculata and E. alternobomen sp. nov. (Cnidaria; Anthozoa; Actiniaria; Edwardsiidae) from Japan
FIGURE 4. Cnidae of Edwardsia aff. tuberculata and Edwardsia alternobomen sp. nov. A–D: cnidae of Edwardsia aff. tuberculata (NSMT-Co 1654). A, tentacle; A1, spirocyst; A2, basitrich. B, actinopharynx; B1, spirocyst; B2, small basitrich; B3, large basitrich; B4, microbasic p-mastigophore. C, nemathybome; C1, small basitrich; C2, large basitrich. D, filament; D1, basitrich; D2, small microbasic b-mastigophore; D3, large microbasic b-mastigophore. E–H: cnidae of Edwardsia alternobomen sp. nov. (NSMT-Co 1656). E, tentacle; E1, spirocyst; E2, small basitrich; E3, large basitrich. F, actinopharynx; F1, basitrich; F2, microbasic p-mastigophore. G, nemathybome; G1, small basitrich; G2, large basitrich. H, filament; H1, spirocyst; H2, basitrich. All images are shown at the same scale.
FIGURE 3 in Two species of Edwardsia having gigantic nematocysts, E. aff. tuberculata and E. alternobomen sp. nov. (Cnidaria; Anthozoa; Actiniaria; Edwardsiidae) from Japan
FIGURE 3. External view and histological section of Edwardsia alternobomen sp. nov. A–C, External view of NSMT-Co 1657 (holotype); A. anesthetized specimen. B. Enlarged view of body wall and nemathybomes in the middle part of the body C. Oral view of the specimen. D–I, histological section. D–H, NSMT-Co 1657 and I, NSMT-Co 1656 (paratype); D. Longitudinal section of uppermost part. E. Transverse section of mesenteries. F. Transverse section of middle part of body with large nemathybomes. G. Enlarged view of a mesentery (lower part than E). H. Transverse section of lower part. I. Enlarged view of a nemathybome. Large basitrichs are indicated. Abbreviations: Ca, capitulum; dd, dorsal directive; dl, dorso-lateral mesentery; Lne, large nemathybome; Me, mesoglea; Pa, parietal muscle; Ph, physa; Re, retractor muscle; Sc, scapus; Sne, small nemathybome; Te, tentacle vd, ventral directive; vl, ventro-lateral mesentery. Scale bars indicate 5 mm in A, 1 mm in B, 500 µm in C–H.
FIGURE 2 in Two species of Edwardsia having gigantic nematocysts, E. aff. tuberculata and E. alternobomen sp. nov. (Cnidaria; Anthozoa; Actiniaria; Edwardsiidae) from Japan
FIGURE 2. External view and histological section of Edwardsia aff. tuberculata Duben and Koren, 1847. A and B, External view of NSMT-Co 1654; A. Preserved specimen (dissected into two halves) B. Enlarged view of body wall and nemathybomes. C–H, histological section of NSMT-Co 1654; C. Longitudinal section of uppermost part. D. Transverse section of upper part. E. Enlarged view of a mesentery. F. Transverse section of lower part of body. G. Enlarged view of a nemathybome. Large basitrichs are indicated. H. longitudinal section of lowermost part. Abbreviations: dd, dorsal directive; dl, dorso-lateral mesentery; Me, mesoglea; Ne, nemathybome; Pa, parietal muscle; Ph, physa; Re, retractor muscle; Te, tentacle; vd, ventral directive; vl, ventro-lateral mesentery. Scale bars indicate 5 mm in A, 1 mm in B, 500 µm in C–H.
Fig. 6 Cnidosacs and nematocysts. a–d Transmission electron microscopic images, longitudinal sections. a in Pseudovermis paradoxus 2.0-3D microanatomy and ultrastructure of a vermiform, meiofaunal nudibranch (Gastropoda, Heterobranchia)
Fig. 6 Cnidosacs and nematocysts. a–d Transmission electron microscopic images, longitudinal sections. a Overview of an entire cnidosac. b Close-up of nematocysts. c Intact nematocyst. d Degraded nematocyst and muscular lining. clw cell wall, cp cnidophage, cw capsule wall, dnc degraded nematocyst, fi filament thread, ha harpoon, inc intact nematocyst, lu lumen, m mitochondrion, ml muscular lining, mv microvilli, nc nematocyst, nu nucleus, vac vacuole
PLATE 30. Chiropsoides n in Nematocysts of the Cubozoa
PLATE 30. Chiropsoides n. sp. (holotype, Sri Lanka), tentacular nematocysts. A and B. Hockeystickshaped microbasic pmastigophores. C. Small rodshaped isorhiza (upper left) and small oval "beehive" isorhiza (lower right). D. Two size classes of very small spherical isorhizas.
PLATE 34. Chironex n in Nematocysts of the Cubozoa
PLATE 34. Chironex n. sp. B (holotype, Okinawa "volcano"), tentacular and phacellar nematocysts. A. Small oval "beehive" isorhiza, tentacle. B. Small subspherical prhopaloid, tentacle. C. Bananaform microbasic pmastigophores and rodshaped isorhiza (arrow), tentacle. D. Microbasic euryteles (arrows), polar view, gastric cirrus.
PLATE 32. Chironex n in Nematocysts of the Cubozoa
PLATE 32. Chironex n. sp. A (holotype, Broome), tentacular nematocysts. A. Bananaform microbasic pmastigophores and subspherical prhopaloid (arrow; polar view). B. Large oval trirhopaloid. C. Bananaform microbasic pmastigophore and rodshaped isorhizas (arrows). D. Small subspherical prhopaloid (above), and rodshaped isorhiza (below).
PLATE 28. Chiropsalmus n in Nematocysts of the Cubozoa
PLATE 28. Chiropsalmus n. sp. B (holotype, Gove Peninsula), tentacular nematocysts. A. Cigarshaped microbasic pmastigophore and large oval prhopaloid. B. Cigarshaped microbasic pmastigophore. C. Large oval prhopaloid. D. Small oval "beehive" isorhiza.
PLATE 27. Chiropsalmus n in Nematocysts of the Cubozoa
PLATE 27. Chiropsalmus n. sp. A (holotype, North Queensland), tentacular nematocysts. A. Cigarshaped microbasic pmastigophore, small oval "beehive" isorhizas, and rodshaped isorhizas, plus one subspherical prhopaloid (polar view, lower right). B. Cigarshaped microbasic pmastigophore, small subspherical prhopaloid, and small rodshaped isorhizas. C. Small subspherical prhopaloid, small oval "beehive" isorhizas, and rodshaped isorhizas.
PLATE 26 in Nematocysts of the Cubozoa
PLATE 26. Chiropsalmus quadrumanus (Müller) (neotype), tentacular nematocysts. A. Cigarshaped microbasic pmastigophore, footballshaped microbasic prhopaloid, and rodshaped isorhizas (arrows). B. Cigarshaped microbasic pmastigophores. C. Footballshaped microbasic p rhopaloid. D. Small spherical microbasic prhopaloid.
PLATE 25 in Nematocysts of the Cubozoa
PLATE 25. Chiropsalmus maculatus Cornelius et al. (holotype), tentacular nematocysts. A. Bananaform microbasic pmastigophores. B. Microbasic pmastigophore and tiny spherical isorhiza (arrow). C. Microbasic pmastigophore, discharged.
PLATE 33. Chironex n in Nematocysts of the Cubozoa
PLATE 33. Chironex n. sp. B (holotype, Okinawa "volcano"), tentacular nematocysts. A. Bananaform microbasic pmastigophore. B. Bananaform microbasic pmastigophore, discharged. C. Large oval prhopaloid. D. Large oval prhopaloid, discharged.
PLATE 24 in Nematocysts of the Cubozoa
PLATE 24. Tamoya haplonema Müller (neotype), tentacular nematocysts. A. Clubshaped macrobasic unidentified rhopaloid. B. Same, partially discharged. C. Same, fully discharged.
PLATE 29 in Nematocysts of the Cubozoa
PLATE 29. Chiropsoides buitendijki (Horst) (syntype), tentacular nematocysts. A. Clubshaped microbasic pmastigophores. B. Footballshaped microbasic prhopaloid (left), footballshaped trirhopaloid (right). C. Clubshaped pmastigophores and footballshaped trirhopaloids.
PLATE 23 in Nematocysts of the Cubozoa
PLATE 23. "Morbakka", Port Douglas, Queensland (holotype), tentacular nematocysts. A. Clubshaped microbasic pmastigophores (with fibrils still connected to the nematocyst in the lower right). B and C. Clubshaped microbasic pmastigophores and large oval isorhiza. D. Large oval isorhiza.
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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.