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49 results for “Zygophylax”
Figure 8. Zygophylax brownei Billard, 1924. A in Systematic affinities of Zygophylacidae (Cnidaria: Hydrozoa: Macrocolonia) with descriptions of 15 deep-sea species
Figure 8. Zygophylax brownei Billard, 1924. A, three colonies; B, portion of hydrocaulus with coppinia; C, axillary hydrotheca (arrow); D, magnification of the node (left arrow) and the apophysis of hydrocladia (right arrow); E, a gonotheca; F, a gonotheca with three apical apertures (arrows). From samples: A–F: ZSM 20220295, Gulf of Cadiz. A, B, light microscope images; C–F, SEM images. Scale bars: A = 5 mm; B = 1 mm; C, E = 200 µm; D, F = 100 µm.
Figure 7. Zygophylax biarmata Billard, 1905. A in Systematic affinities of Zygophylacidae (Cnidaria: Hydrozoa: Macrocolonia) with descriptions of 15 deep-sea species
Figure 7. Zygophylax biarmata Billard, 1905. A, two colonies; B, hydrocaulus with coppinia; C, hydrothecal arrangement along a hydrocladium; D, an axillary hydrotheca (arrow); E, a hydrotheca with diaphragm (left arrow) and basal nematotheca (right arrow); F, magnification of a nematotheca; G, distal part of a hydrotheca showing multiple renovations. From samples: A–G: ZSM 20220294, Gulf of Cadiz. A, B, D, E, light microscope images; C, F, G, SEM images. Scale bars: A, B = 2 mm; C = 200 µm; D = 500 µm; E = 100 µm; F, G = 50 µm.
PLATE 1 in Zygophylax kakaiba, a new species of hydroid (Cnidaria: Hydrozoa: Zygophylacidae) from the Philippine Islands
PLATE 1. Zygophylax kakaiba sp. nov. (A) colony; (B) part of polysiphonic stem; (C) hydrocladia; (D) axillary hydrotheca and scar of nematothecal insertion (arrow); (E) hydrocladial hydrothecae; (F) nematotheca at junction between hydrotheca and hydrocladium. Scale: (A) 0.5 cm; (B–F) 200 µm.
FIGURE 23. Zygophylax tizardensis Kirkpatrick, 1890 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 23. Zygophylax tizardensis Kirkpatrick, 1890 (continued). A. Nematothecae from the accessory tubes of the stem. B, C. Nematothecae borne on cladial apophyses, renovated in both cases. D–F. Details of a hydrotheca, showing the diaphragm (D, lateral view), internal septum (E, transverse section), and shape of aperture (F, apical view). All from sample MNHN-IK- 2019-2100. Scale bar: A–F = 100 µm.
FIGURE 22. Zygophylax tizardensis Kirkpatrick, 1890 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 22. Zygophylax tizardensis Kirkpatrick, 1890 (part). A. Apical part of a colony. B–F. Cauline (B), axillar (C) and cladial (D–F) hydrothecae. From samples MNHN-IK-2019-2100 (A–D) and -2103 (E, F). Scale bars: B–F = 300 µm; A = 1 mm.
FIGURE 21. Zygophylax sibogae Billard, 1918 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 21. Zygophylax sibogae Billard, 1918 (continued). A. Nematotheca associated to an apophysis supporting a cladial hydrotheca. B, C. Same hydrotheca in lateral (B) and dorsal (C) aspects. D. Nematothecate ramulus. E, F. Two gonothecae, one with two apertures (seen laterally, E), the other with three apertures (seen apically, F). All from sample MNHN-IK-2019-2136. Scale bars: A–C = 100 µm; D–F = 500 µm.
FIGURE 19. Zygophylax sagamiensis Hirohito, 1983. A in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 19. Zygophylax sagamiensis Hirohito, 1983. A. Apical part of a colony. B–D. Cauline (B), axillar (C) and cladial (D) hydrothecae. E. Nematotheca. F, G. Gonotheca in frontal (F) and lateral (G) views; note nematothecate tubuli in G. All from sample MNHN-IK-2019-2154. Scale bars: E = 100 µm; B–D = 300 µm; F, G = 500 µm; A = 1 mm.
FIGURE 25 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 25. Phylogenetic hypothesis for the Zygophylaciidae based on the 16S rRNA gene. Numbers at nodes refer to support values of the maximum likelihood, Bayesian inference and maximum parsimony analyses, respectively, and are shown only when> 70 and 0.7. Sequences generated in this study are followed by voucher numbers.
FIGURE 15 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 15. Zygophylax pseudafricana Vervoort & Watson, 2003 (part). A. Apical part of a colony. B–G. Cauline (B, C), axillar (D) and cladial (E–G) hydrothecae. All from sample MNHN-IK-2015-2760. Scale bars: B–G = 300 µm; A = 1 mm.
FIGURE 13 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 13. Zygophylax polycarpa Vervoort & Watson, 2003 (continued). A–D. Cauline (A, B) and axillar (C, D) hydrothecae, with (A, C) and without (B, D) nematothecae on their apophyses. All from sample MNHN-IK-2019-2095. Scale bar: A–D = 300 µm.
FIGURE 24 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 24. Zygophylax sp. A. Apical part of a colony. B–D. Cauline (B), axillar (C) and cladial (D) hydrothecae. E, F. Apophyses supporting cladial hydrothecae with either single (E) or a pair (F) of nematothecae. All from sample MNHN-IK- 2019-2156. Scale bars: E, F = 100 µm; B–D = 300 µm; A = 500 µm.
FIGURE 10 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 10. Zygophylax laertesi Peña Cantero, 2020 (continued). A–D. Nematothecae from the apophyses supporting the hydrothecae. E–O. Details of the hydrothecae, showing notably the basal diaphragm in frontal (F, H, O), lateral (E, I, J, K, N) and apical (M) aspects, as well as the notch in the adaxial wall (G, L). From samples MNHN-IK-2015-3024 (A, E–G, N, O), -2019-2122 (B), -2019-2130 (H–J), -2019-2144 (C, D) and -2019-2123 (K–M). Scale bars: A–M = 100 µm; N, O = 50 µm.
FIGURE 11 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 11. Zygophylax laertesi Peña Cantero, 2020 (concluded). A–D. Gonothecae. E–G. Portions of nematophorous tubules. H, I. Nematothecae borne on the tubules. From samples MNHN-IK-2019-2107 (A, E, H), -2130 (B, F, I) and -2146 (C, D, G). Scale bars: A–G = 500 µm; H, I = 100 µm.
FIGURE 8 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 8. Zygophylax laertesi Peña Cantero, 2020 (part). A–D. Four colonies corresponding to various morphotypes. From samples MNHN-IK-2015-3024 (A, compact colony with slightly curved, coplanar hydrothecae), -2019-2130 (B, compact colony with distinctly curved hydrothecae in two rows forming an acute angle), -2019-2122 (C, straggling colony with slightly curved, coplanar hydrothecae) and -2019-2123 (D, straggling colony with slightly curved, coplanar hydrothecae). Scale bar: 1 mm.
FIGURE 7. Zygophylax infundibulum Millard, 1958 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 7. Zygophylax infundibulum Millard, 1958 (continued). A, B. Simple (A) and renovated (B) nematothecae borne on the cladial apophyses supporting the hydrothecae. C, D. Gonothecae arising, at various levels, from the nematothecate tubuli. All from sample MNHN-IK-2019-2150. Scale bars: A, B = 100 µm; C, D = 500 µm.
FIGURE 20. Zygophylax sibogae Billard, 1918 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 20. Zygophylax sibogae Billard, 1918 (part). A. Apical part of a colony. B–D. Cauline (B), axillar (C) and cladial (D) hydrothecae. All from sample MNHN-IK-2019-2136. Scale bars: B–D = 300 µm; A = 1 mm.
FIGURE 5 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 5. Zygophylax cervicornis (Nutting, 1905) (continued). A. Nematothecae from the auxiliary tubes of the stem. B– D. Nematothecae associated to the cauline (B), cladial (C) and axillar (D) hydrothecae. E, F. Nematophorous tubules. G, H. Gonothecae. From samples MNHN-IK-2015-3065 (C, E, G) and -2019-2147 (A, B, D, F, H). Scale bars: A–D = 100 µm; E–H = 500 µm.
FIGURE 4 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 4. Zygophylax cervicornis (Nutting, 1905) (part). A, B. Apical parts of two colonies. C–J. Cauline (C, D), axillar (E, F) and cladial (G–J) hydrothecae. From samples MNHN-IK-2015-3065 (A, C, E, G, H) and -2019-2147 (B, D, F, I, J). Scale bars: C–J = 300 µm; A, B = 1 mm.
FIGURE 6. Zygophylax infundibulum Millard, 1958 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 6. Zygophylax infundibulum Millard, 1958 (part). A. Apical part of a colony. B–H. Cauline (B, C), axillar (D–F) and cladial (G, H) hydrothecae. From samples MNHN-IK-2015-3064 (B, D, G) and -2019-2150 (A, C, E, F, H). Scale bars: B–H = 300 µm; A = 1 mm.
FIGURE 3 in On some species of Zygophylax Quelch, 1885 (Cnidaria: Hydrozoa: Zygophylacidae) from off New Caledonia
FIGURE 3. Zygophylax antipathes (Lamarck, 1816) (concluded). A, B. Nematothecae. C. Sector of coppinia in transverse section. From samples: MNHN-IK-2019-2109 (C) and -2114 (A, B). Scale bars: A, B = 100 µm; C = 500 µm.
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