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386 results for “Sea anemone”
Figure 5 in Two sea anemones (Cnidaria: Anthozoa: Actiniaria) from the Southern Ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones
Figure 5. Cnidom of Chitinactis marmara. A, B, E, F, basitrichs; C, gracile spirocyst; D, H, p-mastigophore A; G, b-mastigophore.
Figure 1 in Two sea anemones (Cnidaria: Anthozoa: Actiniaria) from the Southern Ocean with evidence of a deep-sea, polar lineage of burrowing sea anemones
Figure 1. Detail of known localities for Chitinactis marmara (solid red shapes; triangle indicates type locality), Scytophorus striatus (dashed green shapes) and Scytophorus antarcticus (dotted yellow shape) in the Southern Ocean. Triangles mark type localities and circles mark additional localities for each species; lines indicate the Antarctic Polar Front (inner circle; light blue) and the Subtropical Front (outer circle; dark blue) (following Rintoul, 2007). Scale bar, 1600 km.
Reef fishes can recognize bleached habitat during settlement: sea anemone bleaching alters anemonefish host selection
<p>Dataset accompanies: Scott A, Dixson DL (2016) Reef fishes can recognise degraded habitat during settlement: sea anemone bleaching alters anemonefish host selection. Proceedings the Royal Society B 283: 20152694, http://dx.doi.org/10.1098/rspb.2015.2694</p>
FIGURE 6. Epiactis prolifera. A–B in Intertidal sea anemones (Cnidaria: Actiniaria) from the west coast of the Peninsula of Baja California, Mexico
FIGURE 6. Epiactis prolifera. A–B) oral view showing tentacles and column. C–D) detail of juveniles around the column of different sizes. E–F) cross section of column showing gametogenic tissue. G) cross section of column showing the retractor and parietobasilar muscles. H) longitudinal section of the distal column showing marginal sphincter muscle. I) longitudinal section of tentacle showing ectodermal muscles. (J–R) Cnidae. tentacles: (J) basitrich I, (K) basitrich II, (L) spirocyst, (M) holotrich; actinopharynx: (N) basitrich, (O) p-mastigophores A; column: (P) basitrich; filaments: (Q) basitrich, (R) p-mastigophores A. Abbreviations. ep: epidermis, g: gastrodermis, juv: juveniles, lm: longitudinal muscles, me: mesoglea, o: oocyte, pbm: parietobasilar muscles, rm: retractor muscles, sc: sperm cysts, sp: sphincter, t: tentacles. Scale bars: A–D: 15 mm; E–F–I: 200 µm, G–H: 500 µm; J–R: 20 µm.
FIGURE 1 in Intertidal sea anemones (Cnidaria: Actiniaria) from the west coast of the Peninsula of Baja California, Mexico
FIGURE 1. Map of the Peninsula of Baja California (BC) and Baja California Sur (BCS): 1) Punta Bandera, BC; 2) Punta Morro, BC; 3) La Chorera, BC; 4) Punta Baja, BC; 5) Playa Esmeralda, BC; 6) Punta Eugenia, BCS; 7) Bahía Asunción; 8) Punta Abreojos, BCS; 9) San Juanico, BCS; 10) Bahía Magdalena, BCS; 11) El Conejo, BCS; 12) Cerritos, BCS.
FIGURE 5. Anthopleura sola. A–B in Intertidal sea anemones (Cnidaria: Actiniaria) from the west coast of the Peninsula of Baja California, Mexico
FIGURE 5. Anthopleura sola. A–B) oral disc and tentacles with different coloration. C) detail of acrorhagi. D) column with verrucae and pedal disc. E) cross section of column showing the retractor and parietobasilar muscles. F) longitudinal section of the distal column showing marginal sphincter muscle. G) longitudinal section of tentacle showing ectodermal muscles. (H–U) Cnidae. tentacles: (H) basitrich, (I) spirocyst; acrorhagi: (J) holotrich I, (K) holotrich II, (L) spirocyst; actinopharynx: (M) basitrich; (N) p-mastigophore A; column: (O) basitrich I, (P) basitrich II, (Q) holotrich; filaments: (R) basitrich I, (S) basitrich II, (T) p-mastigophore A, (U) b-mastigophore. Abbreviations. acr: acrorhagi, lm: longitudinal muscles, od: oral disc, pbm: parietobasilar muscles, pd: pedal disc, rm: retractor muscles, sp: sphincter, t: tentacles, vr: verruca, z: zooxanthellae. Scale bars: A–D: 20 mm; E–F: 150 µm, G: 200 µm; H–U: 25 µm.
FIGURE 4. Anthopleura elegantissima. A in Intertidal sea anemones (Cnidaria: Actiniaria) from the west coast of the Peninsula of Baja California, Mexico
FIGURE 4. Anthopleura elegantissima. A) oral disc and tentacles. B) detail of acrorhagi. C) column with verrucae. D) pedal disc. E) cross section of column showing the retractor and parietobasilar muscles. F) longitudinal section of the distal column showing marginal sphincter muscle. G) longitudinal section of tentacle showing ectodermal muscles. (H–V) Cnidae. tentacles: (H) basitrich, (I) spirocyst; acrorhagi: (J) holotrich I, (K) holotrich II, (L) basitrich, (M) spirocyst; actinopharynx: (N) basitrich, (O) p-mastigophore A; column: (P) holotrich, (Q) basitrich; filaments: (R) basitrich I, (S) basitrich II, (T) p-mastigophore B1, (U) p-mastigophore A, (V) b-mastigophore. Abbreviations. acr: acrorhagi, dm: directive mesenteries, lm: longitudinal muscles, me: mesoglea, pbm: parietobasilar muscles, pd: pedal disc, rm: retractor muscles, sp: sphincter, t: tentacles, vr: verrucae. Scale bars: A–D: 20 mm; E–F: 500 µm, G: 200 µm; H–V: 20 µm.
FIGURE 3. Anthopleura artemisia. A in Intertidal sea anemones (Cnidaria: Actiniaria) from the west coast of the Peninsula of Baja California, Mexico
FIGURE 3. Anthopleura artemisia. A) oral disc and tentacles. B) detail of acrorhagi in the margin. C) marginal projections with verrucae. D) detail of expanded column and pedal disc. E) column and tentacles slightly contracted. F) cross section of column at the level of the actinopharynx. G) cross section of column showing the retractor and parietobasilar muscles. H) longitudinal section of the distal column showing marginal sphincter muscle. (I–Y) Cnidae. tentacles: (I) basitrich, (J) spirocyst; acrorhagi: (K) holotrich I, (L) holotrich II, (M) basitrich, (N) spirocyst; actinopharynx: (O) basitrich, (P) p-mastigophore A; column: (Q) holotrich, (R) basitrich I, (S) basitrich II, (T) basitrich III, (U) spirocyst; filaments: (V) basitrich I, (W) basitrich II, (X) p-mastigophore A, (Y) b-mastigophore. Abbreviations. acr: acrorhagi, c: column, ep: epidermis, me: mesoglea, od: oral disc, pbm: parietobasilar muscles, pd: pedal disc, rm: retractor muscles, s: siphonoglyph, sp: sphincter, vr: verrucae. Scale bars. A–E: 20 mm; F, H: 200 µm, G: 500 µm; I–Y: 15 µm.
FIGURE 2. A in Intertidal sea anemones (Cnidaria: Actiniaria) from the west coast of the Peninsula of Baja California, Mexico
FIGURE 2. A) Anthopleura dowii, B) Bunodosoma californicum, C) Bunodosoma grande, D) Isoaulactinia hespervolita, E) Phymactis papillosa.
FIGURE 26 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 26. Cnidae of Calliactis polypus (Forsskål, 1775). A, B, D, E, F, G, I) Basitrichs. H) p-mastigophore B1. C) Spirocysts.
FIGURE 23 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 23. Cnidae of anatomy of Alicia beebei Carlgren, 1940. A, F, J) Basitrichs. K) p-mastigophore C. D, E, H, I, L, M, N, O, Q) p-mastigophores B2. P) p-mastigophore B1. B, C, G) Spirocysts.
FIGURE 22 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 22. Internal anatomy of Alicia beebei Carlgren, 1940. A) Longitudinal section of the distal column. B) Cross section of the column at the level of the actinopharynx showing the cycles of mesenteries (cycles marked by numbers). C) Cross section of column showing gametogenic tissue. D) Cross section through a tentacle showing ectodermal longitudinal musculature. E) Detail of a cross section of the column showing compound vesicle and cnidae. F) Detail of a cross section of column showing parietobasilar muscles. G) Longitudinal section of proximal end showing basilar muscles. H) Detail of a cross section of the column at the level of the actinopharynx showing the retractor and parietobasilar muscles. Basilar muscles (Ba), Capitulum (C), Cnidae (Cn), Ectoderm (Ec), Endoderm (En), Mesoglea (Me), Oral disc (Od), Parietal muscles (Pa), Retractor muscles (Re), Siphonoglyphs (arrows), Vesicle (V), Tentacle (Te). Scale bars: A, C–H, 0.1 mm; B, 0.5 mm.
FIGURE 20 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 20. Cnidae of Phymactis papillosa (Lesson, 1830). A, C, E, F, G, I) Basitrichs. D) Holotrich. J) b-mastigophore. H, K) p-mastigophores A. L) p-mastigophore B1. B) Spirocyst.
FIGURE 21 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 21. External anatomy of Alicia beebei Carlgren, 1940. A) Lateral view of preserved specimen. B) Oral view of living specimen. C) Oral view of living specimen showing vesicles. D–E) Detail of lateral view of living specimen showing simple and compound vesicles, respectively. F) Detail of the tentacle showing small rounded protuberances. Capitulum (C), Scapus (S), Vesicle (V). Scale bars: 5 mm.
FIGURE 18 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 18. External anatomy of Phymactis papillosa (Lesson, 1830). A) Lateral view of preserved specimen. B) Detail of acrorhagi. C) Oral view of living specimen. D) lateral view of living specimen. E) Oral view of living specimen. F) Aboral view of living specimen. Acrorhagi (Ac), Pedal disc (Pd), Vesicle (V). Scale bars: 5 mm.
FIGURE 19 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 19. Internal anatomy of Phymactis papillosa (Lesson, 1830). A) Longitudinal section of the distal column. B) Cross section of the column at the level of the actinopharynx showing the cycles of mesenteries (cycles marked by numbers). C) Detail of a cross section of column showing parietobasilar muscles. D) Cross section through a tentacle showing ectodermal longitudinal musculature. E) Detail of a longitudinal section of the column showing acrorhagi and marginal sphincter muscle. F) Detail of a cross section of the column at the level of the actinopharynx showing the retractor and parietobasilar muscles. G) Longitudinal section of proximal end showing basilar muscles. Acrorhagi (Ac), Basilar muscles (Ba), Ectoderm (Ec), Endoderm (En), Fosse (Fo), Mesoglea (Me), Parietobasilar muscles (Pa), Retractor muscles (Re), Siphonoglyphs (arrows), Sphincter (Sp), Vesicle (V), Tentacle (Te). Scale bars: A, C–G, 0.1 mm; B, 0.5 mm.
FIGURE 17 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 17. Cnidae of Phialoba steinbecki Carlgren, 1951. A, D, E, F, H, I) Basitrichs. C, G, J) p-mastigophores A. B) Spirocyst.
FIGURE 16 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 16. Internal anatomy of Phialoba steinbecki Carlgren, 1951. A) Longitudinal section of the distal column. B) Cross section of the column at the level of the actinopharynx showing the cycles of mesenteries (cycles marked by numbers). C) Cross section through a tentacle showing ectodermal longitudinal musculature. D) Cross section of column showing gametogenic tissue. E) Longitudinal section of proximal end showing basilar muscles. F) Detail of a cross section of the column at the level of the actinopharynx showing the retractor and parietobasilar muscles. Basilar muscles (Ba), Ectoderm (Ec), Endoderm (En), Mesoglea (Me), Oocytes (O), Parietobasilar muscles (Pa), Retractor muscles (Re), Siphonoglyphs (arrows), Tentacle (Te). Scale bars: A, C–F, 0.1 mm; B, 0.5 mm.
FIGURE 15 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 15. External anatomy of Phialoba steinbecki Carlgren, 1951. A) Lateral view of preserved specimen. B) Oral view of living specimen. C) Detail of small projection in distal column (black circle). D) Detail of small rounded protuberance in oral disc (black circle). E–F) Oral view of specimens in vivo, showing the small rounded protuberances in oral disc (circles). Oral disc (Od), Margin (Ma). Scale bars: 5 mm.
FIGURE 14 in First inventory of sea anemones (Cnidaria: Actiniaria) from La Paz Bay, southern Gulf of California (Mexico)
FIGURE 14. Cnidae of Isoaulactinia hespervolita Daly, 2004. A, B, D, F, G, H, L, M, O, P) Basitrichs. I) Holotrich. J) p- mastigophore A with looped basal tubule. Q) b-mastigophore. E, K, N, R) p-mastigophores A. S) p-mastigophore B2a. C) Spirocyst.
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