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20 results for “Sciurella”
FIGURE 18 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 18. Photomicrographs of Sciurella dolichotheca (Allman, 1883), from type material MNHN H.L. 1233. Scale bar: 200 µm.
FIGURE 13 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 13. SEM study of Sciurella cylindrica (Kirchenpauer, 1876) (part). A, B. Portions of stems with either bipinnate (A) and pinnate (B) arrangements of cladia. C, D. Details of internodes belonging to two different stems with bipinnate cladia. E, F. Details of stem apophyses supporting cladia from two different stems. From sample:s MHNG-INVE-0137407 (A, B, D, E) and AMS Y.617 (C, F). Scale bars: E, F = 100 µm; D = 200 µm; A–C = 500 µm.
FIGURE 12 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 12. Distribution of the stem nematothecae in Sciurella cylindrica (Kirchenpauer, 1876). A, B. Two portions of a stem, each showing a few successive internodes and their nematothecae. C–F. Close-ups of four cladial apophyses seen laterally, showing variation in the number of their associated nematothecae. All from sample MHNG-INVE-0137407. Scale bars: C–F = 200 µm; A, B = 500 µm.
FIGURE 20 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 20. Plumulariidae phylogenetic hypothesis showing the position of Sciurella species (highlighted) in the family. Numbers at nodes show Bayesian posterior probabilities, maximum likelihood bootstrap values, and maximum parsimony bootstrap values, respectively.
FIGURE 6 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 6. Gonotheca of S. indivisa Allman, 1883. A. Portion of fully fertile stem. B–D. Gonothecae seen frontally (B, D) and laterally (C); note aperture in C (arrowhead). From samples: MHNG-INVE-0137405 (A–C), MNHN H.L. 1374 (D – type material). Scale bars: B–D = 300 µm; A = 500 µm.
FIGURE 3 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 3. Structure of the stem in Sciurella indivisa Allman, 1883. A. Internode (only the "frontal" cladia are shown). B–D. Three stem apophyses supporting cladia, with (B) or without (C, D) proximal nematothecate internode (N.B.: Only the "frontal" pair of axillar nematothecae is depicted in B–D). E. Detail of the axil of a stem apophysis in apical view, showing mamelon and lateral pairs of nematothecae. From samples: MHNG-INVE-0137405 (A–C, E), MNHN H.L. 1373 (D – type material). Scale bars: B–E = 200 µm; A = 500 µm.
FIGURE 2 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 2. Details of four different stems of Sciurella indivisa Allman, 1883, showing variation in the arrangement of cladia: verticils of three (A), irregular (B), alternate (C), bipinnate (D). From samples: MNHN H.L. 1373 (A – type material) and MHNG-INVE-0137405 (B–D); stems in A and B are fertile (portions with gonothecae not shown). Scale bar: 1 mm.
FIGURE 15 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 15. SEM study of Sciurella cylindrica (Kirchenpauer, 1876) (continued). A, B. Nematothecae associated to the stem apophyses supporting the cladia. C. Portions of cladia. D. Two cormidia from neighboring cladia seen laterally. E. Fronto-apical view of a cormidium. F. Latero-frontal view of a hydrotheca. From samples: MHNG-INVE-0137407 (A–D) and AMS Y.617 (E, F). Scale bars: B, F = 50 µm; A, D, E = 100 µm; C = 200 µm.
FIGURE 5 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 5. SEM study of Sciurella indivisa Allman, 1883 (part). A. Portion of stem. B, C. Two close-ups showing the pattern of the insertion of cladia. D. Detail of a stem apophysis supporting a cladium, showing its associated nematothecae. E–G. Three cormidia in various views. H. Cross-section through both a stem and a gonotheca, showing the canaliculate coenosarc and ramified blastostyle, respectively. All from sample MHNG-INVE-0137405.
FIGURE 1 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 1. In situ photographs of Sciurella indivisa Allman, 1883. A. Colony from Bunaken. B. Fertile stem from Sebayur Kecil Island, Komodo National Park (photo courtesy of Lindsay Warren). C, D. Details of a fertile stem from Bunaken showing many gonothecae with their branched blastostyles and embryos developing in brooding chambers formed by the thecae with the stem.
FIGURE 11 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 11. Structure of the stem in Sciurella cylindrica (Kirchenpauer, 1876). A. Internode showing the distribution pattern of the nematothecae. B, C. Cladial apophyses from two different stems, in lateral view. D. Detail of the axil of a cladial apophysis in frontal view, showing mamelon above and associated lateral nematothecae. From samples: MHNG-INVE-0137407 (A, B, D), AMS Y.617 (C). Scale bars: B–D = 200 µm; A = 500 µm.
FIGURE 8 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 8. Sciurella cylindrica (Kirchenpauer, 1876). A. In situ photograph of a small, infertile stem from Tulamben, Bali (photo courtesy of Lindsay Warren), sympatric with the material dealt with herein. B. Detail of a preserved fertile stem bearing female gonothecae with visible oocytes, from sample AMS Y.617.
FIGURE 7 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 7. SEM study of Sciurella indivisa Allman, 1883 (continued). A. Portion of a fully fertile stem. B–F. Detailed views showing the morphology of the gonothecae. G. Close-up of the dorsal side of a gonotheca, showing the distinctive spines and their associated nematothecae. H. Detail of a nematotheca. All from sample MHNG-INVE-0137405.
FIGURE 10 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 10. Diagrammatic illustration of the arrangement of hydrocladia along mature stems of Sciurella cylindrica (Kirchenpauer, 1876) from Bali, in lateral (above) and apical (below) views.
FIGURE 19 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 19. Geographical distribution of Sciurella spp.
FIGURE 9 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 9. Details of three different stems of Sciurella cylindrica (Kirchenpauer, 1876) from the same colony, showing variation in the arrangement of cladia: bipinnate (A), transition from bipinnate to pinnate (B), pinnate (C). All from sample MHNG- INVE-0137407. Scale bar: 1 mm.
FIGURE 17 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 17. Sciurella dolichotheca (Allman, 1883), from type material MNHN H.L. 1233. A. Proximal most hydrotheca and part of its corresponding cladial apophysis. B. Detail of the axil seen laterally, showing mamelon and insertions sites of two broken lateral nematothecae. C. Cormidium composed of two successive hydrothecae. D–F. Lateral (D, E) and mesial (F) nematothecae. Scale bars: D–F = 50 µm; A–C = 200 µm.
FIGURE 4 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 4. Cormidia of Sciurella indivisa Allman, 1883. A–F. Various cormidia in frontal (A) and lateral (B–F) aspects. G–K. Lateral (G, I, J) and mesial (H, K) nematothecae. From samples: MHNG-INVE-0137405 (A–C, I–K), MNHN H.L. 1374 (D, G, H – type material), MNHN H.L. 1373 (E – type material). Specimen in F is redrawn from Schuchert (2015, as Nemertesia sp. 1). Scale bars: G–K = 50 µm; A–F = 200 µm.
FIGURE 14 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 14. Cormidia, nematothecae and gonothecae of Sciurella cylindrica (Kirchenpauer, 1876). A–H. Various cormidia in frontal (A), lateral (B, D–H) and apical (C) aspects. I–K. Lateral (I) and mesial nematothecae, the latter seen both laterally (J) and adaxially (K). L, M. Immature (L) and ripe (M) female gonothecae. From samples MHNG-INVE-0137407 (A–C, I–K), AMS Y.617 (D, L). Figure E is redrawn after Bale (1884, as Antennularia cylindrica), F and G after Kirchenpauer (1876, as Plumularia cylindrica; F from Java, G presumably from Zamboanga), H after Schuchert (2003, as Nemertesia indivisa), and M after Watson (2000, as Nemertesia cylindrica). Scale bars: I–K = 50 µm; A–H = 200 µm; L, M = 300 µm.
FIGURE 16 in Towards a better understanding of the genus Sciurella Allman, 1883 (Cnidaria: Hydrozoa: Plumulariidae): evidence from an integrative study
FIGURE 16. SEM study of Sciurella cylindrica (Kirchenpauer, 1876) (continued). A. Portion of fully-fertile stem. B–D. Female gonothecae (note aberrant twin gonotheca in B). E. Distal part of a gonotheca showing slit-like aperture. F. Nematothecae, note the adaxial emargination of the wall of their upper chamber. All from sample AMS Y.617. Scale bars: F = 25 µm; E = 50 µm; D = 200 µm; C = 300 µm; B = 500 µm; A = 2 mm.
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