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239 results for “cheilostomes”
Figure 36 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 36. Interzooidal epibiont in two Rhynchozoon species. (a–d) Rhynchozoon maculosum, NSMT- Te 1187 (paratype): (a, b) calcified tubes (arrowheads) secreted by bryozoan around epibiont, with occasional openings (arrows); (c) enlargement of calcified tube (asterisk), with broken area showing tubular structure of epibiont (arrowhead) in cross section; (d) epibiont emerging from between vertical walls of two newly forming zooids (asterisk); annular structure of emergent epibiont (arrowhead) suggests it may be a hydroid; note that epibiont appears to have suppressed avicularium formation. (e, f) Rhynchozoon scimitar, NSMT-Te 1206 (paratype): calcified tubes (arrowheads) secreted by bryozoan around epibiont, with epibiont opening indicated by arrow; note that epibiont appears to have suppressed avicularium formation. Panels are scanning electron microscopic images of bleached (a, b, e, f) or dried but non-bleached (c, d) material. Scale bars: a, b, d–f = 300 µm; c = 50 µm.
Figure 38 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 38. Rhynchozoon lunifrons sp. nov., precocious form, NSMT-Te 1198: (a) colony view; (b) marginal autozooids showing orifice shape, and presence of one or two oral spines; (c) autozooids at colony margin, with damaged chamber of suboral avicularium indicated by arrowhead; (d) ovicelled autozooids. Panels are scanning electron microscopic images of a bleached specimen. Scale bars: a = 1.0 mm; b–d = 300 µm.
Figure 35 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 35. Rhynchozoon maculosum sp. nov.: (a) NSMT-Te 1186 (paratype), colony view, showing characteristic 'peppered' appearance due to areolae; (b) NSMT-Te 1184 (paratype), autozooids at colony margin, showing aspect of suboral avicularian chamber; (c) NSMT-Te 1190, autozooids at colony margin, showing orifice shape and position of suboral avicularium; (d) NSMT-Te 1183 (holotype), autozooids; (e) NSMT-Te 1190, ovicelled autozooids (arrowhead, window in calcified ectooecium; arrow, labellum); (f) NHMUK 2016.5.13.73 (paratype), ovicelled autozooids, with abundant frontal avicularia. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a = 1.0 mm; b = 500 µm; c–f = 300 µm.
Figure 30 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 30. Presumed Arthropoma cecilii (Audouin) from the Mediterranean (vicinity of Marseille, France) collected by J.G. Harmelin; NSMT-Te 1163 (a, c), NSMT-Te 1164 (b, d): (a) zooids with forming or fully formed ooecia, one of which has a lateral extension; note row of pseudopores between orifice and floor of ooecium; (b) orifice; (c) colony margin, showing interzooidal connections; (d) ovicelled autozooids; note two rows of pseudopores between orifice and floor of incompletely formed ooecium, and lateral extensions on ovicells at lower right. All panels are scanning electron microscopic images of bleached material. Scale bars: a, d = 500 µm; b = 100 µm; c = 300 µm.
Figure 33 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 33. (a, b) Torquatella duolamellata (Scholz), NSMT-Te 1172: (a) colony; (b) ovicelled and nonovicelled autozooids. (c–f) Metacleidochasma planulata (Canu and Bassler): (c) NSMT-Te 1175, ovicelled and non-ovicelled autozooids, with arrowheads indicating the positions of two ovicells; (d) NSMT-Te 1176, ovicelled and non-ovicelled autozooids, with arrowheads indicating the positions of two ovicells; (e, f) NSMT-Te 1174, (e) orifice, (f) ancestrula and periancestrular zooids. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a = 1.0 mm; b–d, f = 200 µm; e = 50 µm.
Figure 28 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 28. Fenestrulina parviporus sp. nov., NSMT-Te 1158 (paratype): (a) autozooids at colony margin; (b) autozooids; (c) ovicelled and non-ovicelled autozooids; (d) ancestrula (asterisk) and periancestrular zooids. All panels are scanning electron microscopic images of a bleached specimen. Scale bars = 300 µm.
Figure 26 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 26. Echinovadoma anceps Tilbrook, Hayward, and Gordon, NSMT-Te 1148. (a) view of colony; (b) autozooids; (c) ovicelled autozooids; (d) enlargement of centre of colony in (a), showing ancestrular complex. All panels are scanning electron microscopic images of dried, naturally dead colony. Scale bars: a = 500 µm; b, c = 200 µm; d = 250 µm.
Figure 25 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 25. (a) Thornelya fuscina Tilbrook, Hayward, and Gordon, NSMT-Te 1145: autozooids. (b) Thornelya perarmata Harmer, NSMT-Te 1146: autozooids; arrows and arrowheads indicate two types of adventitious avicularia (see the text). (c, d) Gigantopora pupa (Jullien), NSMT-Te 1147: (c) colony view, showing ovicelled and non-ovicelled autozooids (arrowhead, minute oral spine); (d) orifice. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a, b = 300 µm; c = 1.0 mm; d = 200 µm.
Figure 8 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 8. (a, b) Smittipora cordiformis Harmer, NSMT-Te 1071: (a) frontal view of colony; (b) enlargement showing autozooids, maternal zooid with vestigial ooecium (arrowhead) and interzooidal avicularia. (c, d) Cribralaria curvirostris Silén, NSMT-Te 1073: (c) autozooids and vicarious avicularia; (d) autozooids at colony margin, including one bearing an ovicell. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a = 1.0 mm; b–d = 500 µm.
Figure 24 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 24. (a, b) Hippopodina adunca Tilbrook, NSMT-Te 1137: (a), view of colony; note small relative size of zooids in overgrowing Puellina harmeri colony at upper right; (b) ovicelled and non-ovicelled autozooids; note unusual presence of avicularium on ovicelled zooids. (c, d) Hippopodina iririkiensis Tilbrook, NSMT-Te 1141: (c) view of colony; (d) ovicelled and non-ovicelled autozooids. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a, c = 1.0 mm; b, d = 500 µm.
Figure 11 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 11. (a, b) Chorizopora brongniartii (Audouin) sensu lato, NSMT-Te 1084: (a) ovicelled and nonovicelled autozooids, interzooidal avicularia and kenozooids; (b) autozooidal orifices. (c) Poricella spathulata (Canu and Bassler), NSMT-Te 1085: autozooids, interzooidal avicularia and developing ooecium. (d) Exechonella sp. A, NSMT-Te 1086: autozooids. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a = 200 µm; b = 100 µm; c = 300 µm; d = 400 µm.
Figure 12 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 12. Celleporaria calva Tilbrook: (a) NSMT-Te 1087, zooids near colony margin; note the lack of oral spines; (b) NSMT-Te 1087, autozooids and two types of vicarious avicularia; (c) NSMT-Te 1088, autozooid near colony margin, showing primary orifice and pair of oral spines; (d) NSMT-Te 1088, ovicells. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a, b = 500 µm; c = 100 µm; d = 250 µm.
Figure 23 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 23. (a–c) Stylopoma vilaensis Tilbrook, NSMT-Te 1131: (a) autozooids; (b) orifice; (c) autozooids and vicarious avicularium at colony margin. (d–f) Junerossia copiosa Dick, Tilbrook, and Mawatari, NSMT-Te 1133: (d) young autozooids at colony margin; (e) older autozooids in colony interior; (f) heavily calcified ovicelled and non-ovicelled autozooids. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a, c–f = 300 µm; b = 100 µm.
Figure 5 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 5. Crassimarginatella eremitica sp. nov., NSMT-Te 1063 (holotype): (a) frontal view of colony; (b) enlargement showing autozooids; (c) autozooids with vestigial ooecium (arrowheads) and lacking ooecium (arrow); (d) frontodistal view of zooid showing vestigial ooecium; (e) marginal autozooids, showing zones of interzooidal contact, each bearing a uniporous septulum, and a forming vestigial ooecium; (f) ancestrula (asterisk) and periancestrular zooids (1, distal; 2, 3, distolateral; 4, proximal; 5, 6 proximolateral). All panels are scanning electron microscopic images of the specimen after bleaching. Scale bars: a = 1.0 mm; b = 500 µm; c, e, f = 200 µm; d = 100 µm.
Figure 2 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 2. Collecting sites in this study (for locations, refer to Figure 1). (a–c) Collecting site SES at end of ruined stone pier projecting from shore near Sesoko Biological Station, Sesoko Island, Okinawa: (a) view of pier, with arrowheads indicating area in which bryozoans were collected at low tide; (b) overturning coralline boulders to examine undersides for bryozoans; (c) example of overturned coralline boulder bearing encrusting bryozoans. (d, e) Collecting site REEF on Sesoko Island; entire reef is covered with ulvacean green algae: (d) examining coralline rocks at water's edge; (e) example of overturned coralline boulder bearing encrusting bryozoans, with scale given by 20 cm chisel at bottom centre. (f–h) Collecting site MIN at breakwater on Minna Island, composed of non-coralline rocks: (f) overview of collecting area, with scale indicated by bucket left of centre near top; (g) crevice filled with small rocks typically richly encrusted by bryozoans, with 30 cm long hammer indicating scale; (h) example of overturned rock bearing a high diversity of encrusting bryozoans as well as many serpulid and spirorbid polychaetes and other invertebrates; chisel intruding at upper right indicates scale.
Figure 17 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 17. Parasmittina alanbanneri Soule and Soule, (a–c) NSMT-Te 1104, (d) NSMT-Te 1105: (a) autozooids; (b) orifice, showing broad lyrula and strong condyles; (c) ovicelled and non-ovicelled autozooids; (d) autozooids, with larger, single avicularia. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a = 250 µm; b = 100 µm; c = 200 µm; d = 300 µm.
Figure 7 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 7. (a, b) Beania cookae Tilbrook, NSMT-Te 1068, dried specimens: (a) part of colony branch showing two complete autozooids; (b) enlargement of distal end of autozooid showing paired avicularia. (c–f) Beania hexamicorum Tilbrook, Hayward, and Gordon, dried specimens: (c) NHMUK 2016.5.13.12, frontal view showing recumbent colony loosely attached to substratum, with asterisks indicating autozooids that have more than one avicularium on a single side; (d) enlargement of left part of colony in previous panel, with autozooids having only single or paired avicularia proximolateral to orifice (asterisks, autozooids with pair of stout suboral spines meeting in midline; circles, autozooids with large operculum and lacking suboral spines); (e) NSMT-Te 1069, autozooids with two pairs of avicularia; asterisk and circle as in panel d; (f) NSMT-Te 1069, autozooid with three pairs of avicularia (arrowheads). All panels are scanning electron microscopic images. Scale bars: a, d = 500 µm; b = 100 µm; c = 1.0 mm; e, f = 400 µm.
Figure 4 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 4. (a–e) Thalamoporella karesansui sp. nov.: (a) NSMT-Te 1060 (holotype), autozooids, vicarious avicularium and ovicelled zooids; (b) NHMUK 2016.5.13.7 (paratype), vicarious avicularia and surrounding autozooids; (c) SES-specimen A, basal surface of dried colony, showing basal insertions; (d) NHMUK 2016.5.13.7 (paratype), spicules removed by bleaching, including small C-shaped callipers and medium-sized, slightly angled compasses; asterisks mark sponge spicules; (e) NHMUK 2016.5.13.7 (paratype), interzooidal connections; (f) Thalamoporella stapifera (Levinsen), NSMT-Te 1055, interzooidal connections. a, b, e, f, scanning electron microscopic images of bleached material; c, d, photomicrographs. Scale bars: a, c = 500 µm; b = 250 µm; d = 100 µm; e, f = 150 µm.
Figure 14 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 14. (a–e) Celleporaria pilaefera (Canu and Bassler), (a–d) NSMT-Te 1092, (e) SES-22: (a) autozooids near colony margin; (b) primary orifice; (c) suboral avicularia and typical suboral umbonate processes; (d) very long suboral umbonate processes; (e) ovicelled and non-ovicelled autozooids. (f–h) Celleporaria triangula Seo, NSMT-Te 1097: (f) autozooids and vicarious avicularium near colony margin; (g) primary orifices; (h) colony interior, with autozooids, vicarious avicularia and developing ooecia. All panels are scanning electron microscopic images of bleached specimens. Scale bars: a, d–f, h = 500 µm; b = 100 µm; c = 250 µm; g = 150 µm.
Figure 3 in Rocky-intertidal cheilostome bryozoans from the vicinity of the Sesoko Biological Station, west-central Okinawa, Japan
Figure 3. (a) Aetea sp. A: NSMT-Te 1053, zooids and interconnecting stolons. (b–f) Thalamoporella stapifera (Levinsen): (b) NSMT-Te 1056, autozooids, vicarious avicularium and ovicelled zooid; (c) NSMT- Te 1054, vicarious avicularium, with surrounding autozooids showing no torsion; (d) NSMT-Te 1055, autozooids and ovicelled zooid; note small lateral-oral tubercles on zooid proximal to ovicelled zooid; (e) Reef-2zs, basal surface of colony, showing basal insertions; (f) spicules, including small stirrup-shaped callipers and small to medium, slightly angled compasses. a–d, scanning electron microscopic images; e, f, photomicrographs. Scale bars: a = 250 µm; b–e = 500 µm; f = 100 µm.
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