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386 results for “Sea anemone”
FIGURE 5 in A new species of sea anemone from the Chilean fjord region, Paraisanthus fabiani (Actiniaria: Isanthidae), with a discussion of the family Isanthidae Carlgren, 1938
FIGURE 5. Specimens of Paraisanthus fabiani and some other sea anemone species with which this species is regularly associated in situ. H. p.: Halcurias pilatus, P.e.: Phellia exlex, P.f.: Paraisanthus fabiani, S. sp.: Sagartiidae sp., here with an unidentified pink chondrillid sponge, Isla Cailín, 18 m.
FIGURE 5 in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 5. Edwardsia juliae sp. nov. A. Tentacle crown. B. External anatomy, holotype CAS 175212. Scale bar = 2 mm. C. Cross section of column, showing retractor muscle, parietal muscle, and nemathybome, CAS 175206. Note dense periderm covering epidermis. Scale bar = 300 μm. D. Size and shape variation of contracted specimens. Scale bar = 10 mm. E. Detail of Fig. 5B, showing nemathybomes on scapus. F. Longitudinal section through retracted aboral end, CAS 175206. Note denser, thicker epidermis on physa compared to scapus. Scale bar = 400 μm. G. Detail of Fig. 5F, showing transition between scapus and physa. H. Cross section of parietal muscle, CAS 175206. Scale bar = 100 μm. I– O, Cnidae. Scale bar after O = 20 μm, applies to all capsules. I. Spirocyst. J. Large basitrich of tentacle. K. Small basitrich of tentacle. L. Small basitrich of filament. M. Microbasic pmastigophore of filament. Cnidae of similar size and morphology are found in actinopharynx. N. Large basitrich of nemathybome. O. Large basitrich of filament. Cnidae of similar size and morphology are found in actinopharynx.
FIGURE 2. Actiniarian musculature. A in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 2. Actiniarian musculature. A. Cross section of mesentery of Anthopleura thallia Gosse, 1854. Small free flap (= pennon) of retractor muscle indicated by asterisk. B. Cross section of retractor muscle of Edwardsia claparedii Andres, 1880. Symbols and orientation as in Fig. 2A: the body wall is to the left of the figure, the coelenteron is to the right. Note that the pennon (indicated by asterisk) is almost equal in size to the rest of the retractor muscle, in contrast with that of Fig. 2A. C. Cross section of parietobasilar muscle of A. thallia. White arrow indicates pennon created by obliquelyoriented muscle.
FIGURE 6 in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 6. Edwardsia mcmurrichi sp. nov. A. External anatomy, holotype CAS 175239. Scale bar = 3 mm. B. Cross section of retractor muscle, CAS 175328. Scale bar = 300 μm. C. Longitudinal section through aboral end, CAS 175328. Black arrow demarcates physa; note region of physal epidermis missing. D. Cross section of parietal muscle, CAS 175328. Scale bar = 100 μm. E. Cross section of scapus showing nemathybome, CAS 175328. Note relatively thick mesoglea and relatively thin epidermis. Scale bar = 200 m. F–M, Cnidae. Scale bar below I and J = 20 μm, applies to all capsules. F. Large spirocyst. G. Large basitrich of tentacle. H. Large basitrich of actinopharynx. I. Small basitrich of actinopharynx. Cnidae of similar size and morphology are found in filaments. J. Microbasic pmastigophore of filament. Cnidae of similar size and morphology are found in actinopharynx. K. Large basitrich of filament. L. Basitrich (or pterotrich?) of nemathybome. M. Small spirocyst.
FIGURE 4 in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 4. Edwardsia handi sp. nov. A. External anatomy, holotype CAS 175201. Scale bar = 3 mm. B. Detail of Fig. 4A, showing nemathybomes on scapus. C. Cross section of scapus showing nemathybome, CAS 175205. Scale bar = 150 μm. D. Cross section of parietal muscle, CAS 175205. Scale bar = 200 μm. E. Cross section of retractor muscle, CAS 175205. Scale bar = 200 μm. F. Longitudinal section through aboral end, CAS 175205. Black arrow indicates junction between scapus and physa. Scale bar = 500 m. G–M, Cnidae. Scale bar in M = 20 μm, applies to all capsules unless otherwise indicated. G. Spirocyst. H. Large basitrich of tentacle. I. Exploded pterotrich of nemathybome. Scale bar = 10 μm. J. Large basitrich of filament. Cnidae of similar size and morphology found in actinopharynx. K. Small basitrich of actinopharynx. Cnidae of similar size and morphology found in filaments. L. Large basitrich of actinopharynx. Cnidae of similar size and morphology found in filaments. M. Pterotrich of nemathybome. N. Pterotrichs in situ in nemathybome. Scale bar = 100 μm.
FIGURE 9 in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 9. Paraedwardsia heia sp. nov. A. External anatomy, holotype CAS 15217. Scale bar = 10 mm. B Cross section of parietal muscle. Scale bar = 150 μm. C. Cross section of retractor muscle. Scale bar = 150 μm. D–G, Cnidae. Scale bar below E = 20 μm, applies to all capsules. D. Spirocyst. E. Large basitrich of tentacle. Cnidae of similar size and morphology found in filament and actinopharynx. F. Small basitrich of tentacle. Cnidae of similar size and morphology found in filaments and actinopharynx. G. Microbasic pmastigophore of filament. Cnidae of similar size and morphology found in actinopharynx.
FIGURE 10 in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 10. Scolanthus scamiti sp. nov. A. External anatomy, holotype CAS 175229. Scale bar = 2 mm. B. Cross section of retractor muscle, CAS 175232. Scale bar = 300 μm. C. Cross section of parietal muscle, CAS 175232. Scale bar = 300 μm. D. Detail of Fig. 10A, showing nemathybomes at aboral end. E. Crosssection through scapus, showing nemathybome, CAS 175232. Scale bar = 250 μm. F–O, Cnidae. Scale bar in K = 20 μm, applies to all capsules. F. Spirocyst. G. Large basitrich of tentacle. H. Microbasic pmastigophore of filament. I. Small basitrich of tentacle. Cnidae of similar morphology found in filaments. J. Large basitrich of filament. K. Large basitrich of actinopharynx. L. Discharging basitrich of nemathybome. M. Discharging basitrich of nemathybome. Note small flaps at capsule apex. N. Discharged tubule of nemathybome basitrich, showing spination at proximal end. O. Microbasic pmastigophore in situ in filament. P. Nemathybome with basitrichs in situ.
FIGURE 1 in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 1. Comparative external anatomy of Edwardsiidae from southern and central California. Scale bar = 5 mm. A. Edwardsia californica (McMurrich, 1913). B. Edwardsia handi sp. nov. C. Edwardsia juliae sp. nov. D. Edwardsia mcmurrichi sp. nov. E. Edwardsia olguini sp. nov. F. Edwardsia profunda sp. nov. G. Paraedwardsia heia sp. nov. H. Scolanthus scamiti sp. nov. I. Scolanthus triangulus sp. nov.
FIGURE 3 in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 3. Edwardsia californica (McMurrich, 1913). A. External anatomy, syntype USNM 30716. Scale bar = 3 mm. B. Cross section of retractor muscle, syntype SMNH 12830. Note size and development of retractor pennon (black arrow). Scale bar = 750 μm. C. Nemathybome containing pterotrichs, syntype SMNH 12830. Scale bar = 300 μm. D. Cross section of parietal muscle, syntype SMNH 12830. Scale bar = 200 μm. E. Spirocyst. Scale bar as for H–L. F. Pterotrich of nemathybome. Scale bar as for H–L. G. Detail of Fig. 3A, showing nemathybomes on scapus (white arrows). H–L. Cnidae. Scale bar between F and L = 20 μm, applies to all capsules. H. Small basitrich of actinopharynx. Cnidae of similar size and morphology found in filaments. I. Basitrich of tentacle. J. Microbasic tmastigophore (telotrich) of nemathybome. K. Large basitrich of filament. Cnidae of similar size and morphology found in actinopharynx. L. Microbasic pmastigophore of filament. Cnidae of similar size and morphology found in actinopharynx.
FIGURE 11 in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 11. Scolanthus triangulus sp. nov. A. External anatomy, holotype CAS 175210. Scale bar = 2 mm. B. Cross section of parietal muscle, CAS 175207. Scale bar = 150 μm. C. Cross section of retractor muscle, CAS 175207. Scale bar = 300 μm. D. Longitudinal section through aboral end, CAS 175207. Note nemathybomes at proximalmost point and dark peridermal layer covering aboral epidermis. Scale bar = 500 μm. E. Basitrich of nemathybome. Scale bar as in G–M. F. Cross section through scapus, showing nemathybomes. Scale bar = 300 m. G–M, Cnidae. Scale bar in J = 20 μm, applies to all capsules. G. Large spirocyst. H. Large basitrich of actinopharynx. I. Large basitrich of tentacle. J. Large basitrich of filament. K. Small spirocyst. L. Small basitrich of actinopharynx. M. Small basitrich of tentacle.
FIGURE 8 in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 8. Edwardsia profunda sp. nov. A. External anatomy, holotype CAS 175213. Scale bar = 2 mm. B. Cross section of scapus, showing cluster of nemathybomes, CAS 175214. Scale bar = 200 μm. C. Cross section of retractor muscle, CAS 175214. Scale bar = 400 μm. D. Detail of Fig. 8A, showing physa. E. Pterotrich of nemathybome. Scale bar as in H–L. F. Large basitrich of filament. Scale bar as in H–L. G. Cross section of parietal muscle, CAS 175214. Scale bar = 200 μm. H–L, Cnidae. Scale bar after L = 20 μm, applies to all capsules. H. Small basitrich of tentacle. I. Spirocyst. J. Large basitrich of tentacle. K. Microbasic pmastigophore of filament. L. Small basitrich of filament.
FIGURE 7 in Edwardsiid sea anemones of California (Cnidaria: Actiniaria: Edwardsiidae), with descriptions of eight new species
FIGURE 7. Edwardsia olguini sp. nov. A. External anatomy, holotype CAS 175216. Scale bar = 5 mm. B. Detail of Fig. 7A, showing nemathybomes on scapus. C. Longitudinal section through retracted aboral end. White arrow demarcates physa. Scale bar = 0.5 mm. D. Detail of Fig. 7A, showing retracted aboral end. Physa completely retracted inside proximal column. E. Cross section through parietal muscle CAS 175252. Scale bar = 100 µm. F. Cross section through retractor muscle, CAS 175252. Scale bar = 150 µm. GN, Cnidae. Scale bar in N = 20 µm, applies to all capsules. G. Large basitrich of nemathybome. H. Large basitrich of tentacle. I. Small basitrich of tentacle. J. Spirocyst. K. Large spirocyst. L. Microbasic pmastigophore of actinopharynx. M. Large basitrich of filament. Cnidae of similar size and morphology are found in actinopharynx. N. Small basitrich of nemathybome.
FIGURE 2 in A new vermiform sea anemone (Anthozoa: Actiniaria) from Argentina: Harenactis argentina sp. nov.
FIGURE 2. External anatomy of Harenactis argentina sp. nov. a) Detail of the base. b) View of a whole specimen. c) Longitudinal section of the body wall showing a cinclide (arrow). d) Oral view of a live specimen in situ.
FIGURE 4 in A new vermiform sea anemone (Anthozoa: Actiniaria) from Argentina: Harenactis argentina sp. nov.
FIGURE 4. Cnidae of Harenactis argentina sp. nov. a) Spirocyst. b) Basitrich. c) Spirocyst. d) Basitrich 1. e) Basitrich 2. f) Spirocyst. g) Basitrich. h) Microbasic p-mastigophore. i) Microbasic b-mastigophore. j) Basitrich. k) Microbasic p-mastigophore. l) Spirocyst. m) Basitrich.
FIGURE 1 in A new vermiform sea anemone (Anthozoa: Actiniaria) from Argentina: Harenactis argentina sp. nov.
FIGURE 1. Geographic distribution of Harenactis argentina sp. nov. 1, Fracaso beach 2, Villarino beach 3, Punta Pardelas.
FIGURE 3 in A new vermiform sea anemone (Anthozoa: Actiniaria) from Argentina: Harenactis argentina sp. nov.
FIGURE 3. Internal anatomy of Harenactis argentina sp. nov. a) Cross section at the actinopharynx level showing all mesenteries perfect. b) Detail of a cinclide. c) Cross section of a tentacle showing the ectodermal longitudinal muscles. d) Cross section of the oral disc showing the ectodermal longitudinal muscles. e) Longitudinal section of distal part of the column. f) Longitudinal section of the pedal disc. Abbreviations: Ac, actinopharynx; B, base; C, cinclide; Co, column; D, directives; Ep, epidermis; Ga, gastrodermis; M, mesenteries; Me, mesogloea; Mod, longitudinal muscles of the oral disc; Mt, longitudinal muscles of the tentacle; S, siphonoglyph; T, tentacle.
FIGURE 10 in First Inventory of Sea Anemones (Cnidaria: Actiniaria) of the Mexican Caribbean
FIGURE 10. — Bartholomea annulata. (A) Live specimen in natural habitat. (B) Oral view. (C) Lateral view. (D) Pedal disc view. (E) Cross section through distal column. (F) Longitudinal section through tentacle. (G – T) Cnidae. — tentacle: (G) basitrich, (H) microbasic p - amastigophore, (I) spirocyst; actinopharynx: (J) basitrich, (K) microbasic p - amastigophore; column: (L) basitrich, (M) microbasic p - amastigophore, (N) holotrich; filament: (O) basitrich, (P) microbasic p - amastigophore, (Q) microbasic p - amastigophore, acontia: (R) basitrich, (S) basitrich, (T) microbasic p - amastigophore. Abbreviations. — ca: capitulum, ci: cinclides, dm: directive mesenteries, nb: nematocyst batteries, od: oral disc, pd: pedal disc, rm: retractor muscles, s: siphonoglyph, sc: scapus, t: tentacle, z: zooxanthellae. Scale bars. — A – D 10 mm; E – F: 200 µm; G – S: 25 µm, T: 17.5 µm.
FIGURE 11 in First Inventory of Sea Anemones (Cnidaria: Actiniaria) of the Mexican Caribbean
FIGURE 11. — Ragactis lucida. (A) Live specimen in natural habitat. (B) Oral view. (C) Pedal disc view. (D) Lateral view. (E) Cross section through distal column. (F) Cross section through distal column wall. (G – Q) Cnidae. — tentacle: (G) basitrich, (H) microbasic p - amastigophore, (I) spirocyst; actinopharynx: (J) basitrich, (K) microbasic p - amastigophore; column: (L) basitrich, (M) holotrich, (N) microbasic p - amastigophore; filament: (O) microbasic p - amastigophore; acontia: (P) basitrich, (Q) microbasic p - amastigophore. Abbreviations. — ac; acontia, ca: capitulum, dm: directive mesenteries, lm: longitudinal muscles, me: mesoglea, od: oral disc, pd: pedal disc, rm: retractor muscles, s: siphonoglyph, sc: scapus, t: tentacle, z: zooxanthellae. Scale bars. — A – D: 10 mm; E – F: 200 µm; G – P 25 µm, Q: 17.5 µm.
FIGURE 9 in First Inventory of Sea Anemones (Cnidaria: Actiniaria) of the Mexican Caribbean
FIGURE 9. — Aiptasia pallida. (A) Oral view. (B) Lateral view. (C) Tentacles view. (D) Cross section through distal column. (E) Cross section through proximal column. (F – S) Cnidae. — tentacle: (F) basitrich, (G) basitrich, (H) microbasic p - amastigophore, (I) spirocyst; actinopharynx: (J) basitrich, (K) microbasic p - amastigophore; column: (L) basitrich, (M) basitrich, (N) microbasic p - amastigophore; filament: (O) basitrich, (P) microbasic p - amastigophore, (Q) microbasic p - amastigophore; acontia: (R) basitrich, (S) microbasic p - amastigophore. Abbreviations. — ac: acontia, c: column, ci: cinclides, fi: filament, od: oral disc, pd: pedal disc, rm: retractor muscles, s: siphonoglyph, t: tentacle. Scale bars. — A – C: 10 mm; D – E: 200 µm; F – R: 25 µm; S: 17. 5 µm.
FIGURE 8 in First Inventory of Sea Anemones (Cnidaria: Actiniaria) of the Mexican Caribbean
FIGURE 8. — Stichodactyla helianthus. (A) Live specimen in natural habitat. (B) Oral disc and tentacles view. (C) Lateral view. (D) Pedal disc view. (E) Cross section through distal column. (F) Longitudinal section through column margin. (G – N) Cnidae. — tentacle: (G) basitrich, (H) spirocyst; actinopharynx: (I) basitrich; column: (J) basitrich, (K) basitrich; filament: (L) basitrich, (M) basitrich, (N) microbasic p - mastigophore. Abbreviations. — c: column, ent: endocoelic tentacle, ext: exocoelic tentacle, msp: marginal sphincter, od: oral disc, pb: parietobasilar muscle, pd: pedal disc, rm: retractor muscle, s: siphonoglyph, vr: verrucae, t: tentacle. Scale bars. — A – D: 10 mm; E – F: 200 µm; G – N: 25 µm.
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International Brain Laboratory public data
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OpenNeuro
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