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29 results for “Dysidea”
FIGURE 6 in Description of two new species of Dysidea (Porifera, Demospongiae, Dictyoceratida Dysideidae) from Tauranga Harbour, Bay of Plenty, New Zealand
FIGURE 6. Dysidea teawanui sp. nov.: A. Massive, hemispherical, to multilobed specimens covering rocks and boulders at Dive Crescent, Tauranga Harbour at a depth of 5 m; B. Spherical specimen with predatory sea slugs Ceratosoma amoenum; C. Holotype NIWA 113650, showing the almost spherical morphology of smaller specimens, the regular conulose surface with raised, membranous oscules visible in profile on the surface; D. Surface of a massive specimen showing large apical oscules with raised membranous collars; E. Apical oscule showing regular distribution of conules and collagen fibrils stretching between conules.
FIGURE 5. A in Description of two new species of Dysidea (Porifera, Demospongiae, Dictyoceratida Dysideidae) from Tauranga Harbour, Bay of Plenty, New Zealand
FIGURE 5. A. Dysidea cf. cristagalli (NIWA 101432, MNP7240, UKNHM 2004.10.5.1) collected from a reef flat at 33 m, in Spirits Bay, North Cape, in 2002.
FIGURE 7 in Description of two new species of Dysidea (Porifera, Demospongiae, Dictyoceratida Dysideidae) from Tauranga Harbour, Bay of Plenty, New Zealand
FIGURE 7. Dysidea teawanui sp. nov., holotype NIWA 113650: A. Dense, ladder-like architecture of the primary and secondary fibres, showing the powder bluey-grey colouration of the freshly collected sponge; B. Macerated fibrous skeleton, showing densely aligned and anastomosing primary fibres, connected by slender, cored secondary fibres.
FIGURE 2 in Description of two new species of Dysidea (Porifera, Demospongiae, Dictyoceratida Dysideidae) from Tauranga Harbour, Bay of Plenty, New Zealand
FIGURE 2. Dysidea tuapokere sp. nov., holotype NIWA 92974: A. Before collection, showing the irregular, bulbous, digitate morphology, and irregularly dispersed conules; B. Close-up, showing the irregularly spaced conules that appear opaque, due to the presence of abundant sand, and between which stretch collagenous fibrils giving the surface a tent-like appearance; C. Ex- situ photograph showing the shrunken, cavernous appearance upon collection, and the lilac colouration.
FIGURE 4 in Description of two new species of Dysidea (Porifera, Demospongiae, Dictyoceratida Dysideidae) from Tauranga Harbour, Bay of Plenty, New Zealand
FIGURE 4. Dysidea tuapokere sp. nov., holotype NIWA 92974: A. Laminated spongin less visible in more heavily cored primary fibres; B. Laminated golden spongin visible in lightly cored secondary fibres; C. Ectosomal membrane containing fibrillar collagen in the surface. Note only traces of detritus in mesohyl.
FIGURE 1 in Description of two new species of Dysidea (Porifera, Demospongiae, Dictyoceratida Dysideidae) from Tauranga Harbour, Bay of Plenty, New Zealand
FIGURE 1. Map showing type localities for new species, Dysidea tuapokere sp. nov. and D. teawanui sp. nov., from Tauranga Harbour, Bay of Plenty, New Zealand.
FIGURE 3 in Description of two new species of Dysidea (Porifera, Demospongiae, Dictyoceratida Dysideidae) from Tauranga Harbour, Bay of Plenty, New Zealand
FIGURE 3. Dysidea tuapokere sp. nov., holotype NIWA 92974: A. Histological section showing a heavily cored primary fibre extending beneath a surface conule, and eurypylous choanocyte chambers in the surrounding mesohyl which is relatively clear of detritus, and unarmoured surface; B. Macerated, heavily cored, highly irregular, divaricating primary fibre, connected by slender, cored secondary fibres with fine auxiliary struts attaching the secondary fibre to the primary fibre.
FIGURE 17. Dysidea kenkriegeri n in New species of sponges (Porifera, Demospongiae) from the Aleutian Islands and Gulf of Alaska
FIGURE 17. Dysidea kenkriegeri n. sp. A. Holotype. Square is 1cm. B. View from above showing openings of tubes. Square is 1 cm. C. Section through tube. Square is 1cm. D. Section perpendicular to surface. Surface is on the left. Below the surface the reticulation of spongin fibers cored with foreign material is denser than in the deeper parts (upper right). Scale bar is 500 µm. E. Reticulation of spongin fibers just below the ectosome, clear spongin and coring sediment clearly visible. Scale bar is 200 µm. F. Ascending spongin fibers and connecting fibres are loaded with foreign material. Scale bar is 200 µm.
Fig. 11. Dysidea chujaensis n in Seven new species of genus Dysidea (Demospongiae: Dictyoceratida: Dysideidae) from Korea
Fig. 11. Dysidea chujaensis n. sp. A, external morphology; B, surface close up under the dis- secting microscope; C, skeletal structure under the dissecting microscope; D, thin secondary fibres; E, skeletal structure; F, primary and secondary fibres cored with small sands; G, H, primary and secondary fibres. Scale bars: A = 2 cm, B = 5 mm, C = 2 mm, D, E = 200 μm, F-H = 100 μm.
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