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11 results for “Merliida”
FIGURE 1 in First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species
FIGURE 1. Location of sampling sites. Open star indicates sampling site of Hamacantha (Vomerula) mamoi sp. nov., and solid star indicates that of Hamacantha (Vomerula) umisashii sp. nov..
FIGURE 2 in First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species
FIGURE 2. Hamacantha (Vomerula) mamoi sp. nov., holotype (NSMT-Po-2438). A, external morphology. B, skeletal arrange- ment of surface of ectosome. C, vertical section shows bundles of styles. D, diancistras I attach on bundle of styles. Scale bars: A, 5 mm; B, C, 200 µm; D, 100 µm.
FIGURE 5 in First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species
FIGURE 5. Spicules of Hamacantha (Vomerula) umisachii sp. nov., holotype (NSMT-Po-2488). A, styles. B, magnified view of both extremities of mycalosyle, left: blunt end or base, right: sharply pointed end or apex. C, diancistras I. D, diancistras II (cyrtancistra-like diancistras). E, magnified view of tip of diancistra II, note the hook-like structure. F, sigmas. Scale bars: A, 100 µm; B, F, 10 µm; C, 50 µm; D, 20 µm; E, 3 µm.
FIGURE 4 in First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species
FIGURE 4. Hamacantha (Vomerula) umisachii sp. nov., holotype (NSMT-Po-2488). A, external morphology. B, skeletal arrangement of surface of ectosome. Note darker parts are bouquets of upward styles (b). C, other magnified view of surface of ectosome. Sheet of styles gather to bouquets (b). D, diancistras attach on bundle of styles. Scale bars: A, 2 mm; B, C, 100 µm; D, 50 µm.
FIGURE 3 in First record of Hamacantha (Porifera, Demospongiae, Merliida, Hamacanthidae) from Japan, with description of two new species
FIGURE 3. Spicules of Hamacantha (Vomerula) mamoi sp. nov., holotype (NSMT-Po-2438). A, styles. B, magnified view of both extremities of mycalosyle, left: blunt end or base, right: sharply pointed end or apex. C, diancistras I (larger diancistras). D, diancistras II (smaller diancistras). E, sigmas. Scale bars: A, 100 µm; B, E, 20 µm; C, 50 µm; D, 10 µm.
FIGURE 3 in First records of Hamacantha species from seamounts off eastern Australia (Porifera, Demospongiae, Merliida), with description of four new species
FIGURE 3. Hamacantha (Vomerua) novacula sp. nov. A. Holotype QM G337915 preserved specimen. B. Detail of the surface of QM G337915. C. Cross section showing the supportive styles in the choanosome penetrating through the ectosomal layer. D. Large diancistras (I). E. Sigmas. F. Smaller diancistras (II). G. Smaller diancistras (II) with rare 'teeth'. H. Smaller diancistras (II) with reduced barbs. I. Style.
FIGURE 4 in First records of Hamacantha species from seamounts off eastern Australia (Porifera, Demospongiae, Merliida), with description of four new species
FIGURE 4. Hamacantha (Vomerula) melliflura sp. nov. A. Holotype QM G316529 on deck. B. Ectosome, showing the ostia and the meandering solid tissue between the ostia, underneath which is the aquiferous channels. C. One of the aquiferous channels, formed by the arches of styles with rosettes of diancistras. D. Rosettes of diancistras around the bundles of styles. E. Large diancistras (I). F. Smaller diancistras (II). G. Toxa. H. Style. I. Magnified ends of the style as depicted in H.
FIGURE 2 in First records of Hamacantha species from seamounts off eastern Australia (Porifera, Demospongiae, Merliida), with description of four new species
FIGURE 2. Hamacantha (Vomerua) acerata Lévi, 1993. A. Holotype MNHN DCL 3594 preserved specimen. B. Large diancistras. C. Diancistras (II) (referred to as Sigmancistras by Lévi (1993) and cyrtancistra-like diancistra by Ise et al. (2019). D. Sigma. E. Style.
FIGURE 6 in First records of Hamacantha species from seamounts off eastern Australia (Porifera, Demospongiae, Merliida), with description of four new species
FIGURE 6. Hamacantha (Vomerula) levii sp. nov. A. Holotype QM G339187 fixed on the stem of a dead Keratoisis. B. Closeup of the fixed sponge. C. Lower level of the ectosome showing the folding, where the old supporting bundles of styles have fallen. D. Lower surface of the ectosome showing the tangential ectosomal styles and the embedded diancistras. E. Large diancistras (I). F. Intermediate diancistras (II). G. Small diancistras (III). H. Style. I. Magnified ends of the style depicted in H.
FIGURE 5 in First records of Hamacantha species from seamounts off eastern Australia (Porifera, Demospongiae, Merliida), with description of four new species
FIGURE 5. Hamacantha (Vomerula) ridleyi sp. nov. A. Holotype QM G327988 on deck after collection. B. Holotype after fixation. C. Microscope section showing the bundles of styles in the choanosome supporting the tangential styles of the ectosome. D. Lower layer of the ectosome showing the tangential styles and the interspersed diancistras. E. Large diancistras (I). F. Small diancistras (II). G. Toxa. H. Style. I. Magnified ends of the style depicted in H.
FIGURE 1 in First records of Hamacantha species from seamounts off eastern Australia (Porifera, Demospongiae, Merliida), with description of four new species
FIGURE 1. Sampling sites of Hamacantha species described in this study.
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