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102 results for “encrustation”
FIGURE 18 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 18. Drepanophora irregularis sp. nov.: A, colony in shelter of a serpulid tube. B, group of zooids, some with ovicells; folliculinid ciliate tubes protrude from two orifices. C, two zooids, one with an ovicell. D, close-up of primary orifice inside peristome and part of an ovicell; one of the two lateral ovicell pores is visible on its lower side. Scale bars: A, 0.5 mm; B, 0.3 mm; C, 0.2 mm; 0.1 mm.
FIGURE 15 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 15. Hippothoa calcicola sp. nov.: A, colony curving around a serpulid tube. B, area with two female zooids and an autozooid. C, close-up of autozooidal orifice. D, close-up of female zooidal orifice. Scale bars: A, 0.3 mm; B, 0.1 mm; C, 0.02 mm; D, 0.01 mm.
FIGURE 13 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 13. Collarina spicata sp. nov.: A, colony on the side of a shell fragment. B, several zooids, showing projecting tubercles. C, zooids at growing edge of colony. D, orifice and oral spines. Scale bars: A, 1 mm; B, C, 0.1 mm; D, 0.05 mm.
FIGURE 14 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 14. Rosulapelta rosetta sp. nov.: A, colony on a shell grain. B, another colony, live when collected, with four long oral spines, and two small slender spines distal to them. C, outer zooid, showing frontal wall "rosette" and orifice shape. D, orifice region. E, close-up of ovicell. F, close-up of frontal shield. Scale bars: A, 0.5 mm; B, 0.2 mm; C–E, 0.1 mm; F, 0.07 mm.
FIGURE 12 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 12. Puellina tuba sp. nov.: A, entire colony encrusting shell grain. B, Edge of colony showing curving oral spines. C, group of zooids, the central zooid ovicelled; the highest point on the frontal shield of this species is at the center of the projecting V formed by the first pair of costae. D, close-up of orifice and bases of five oral spines. Scale bars: A, 1 mm; B, C, 0.2 mm; D, 0.05 mm.
FIGURE 11 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 11. Puellina caraguata sp. nov.: A, a colony in the hollow of a shell grain. B, another colony growing out of a cavity in which the larva had settled and metamorphosed. C, a group of zooids, the central one one with an ovicell; the highest point or tubercle on the convex frontal shield is central. D, close-up of orifice and bases of five hollow oral spines. Scale bars: A, B, D, 0.5 mm; C, 0.3 mm.
FIGURE 10. Smittipora sawayai Marcus, 1937 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 10. Smittipora sawayai Marcus, 1937: A, a shell fragment encrusted by Smittipora sawayai (bottom) and Ammatophora arenacea (top left) and polychaete tubeworms. B, zooid skeletons. C, close-up of two zooecia with a rhombic interzooidal avicularium between them. D, small colony with frontal membrane and chitinous structures intact. E, close-up of edge of colony showing a leaf-shaped avicularian mandible. Scale bars: A, 1 mm; B, 0.2 mm; C, E, 0.1 mm; D, 0.5 mm.
FIGURE 7 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 7. Akatopora leucocypha (Marcus, 1937): A, portion of colony showing a number of zooids with interspersed kenozooids and thick and pillared calcification of side and basal walls. B, more highly magnified view of several zooids; the central zooid had been damaged and a smaller replacement zooid has grown inside the skeleton of the earlier zooid. C, close-up of a zooid surrounded by triangular kenozooids and an avicularium. Scale bars: A, 0.3 mm; B, C, 0.1 mm.
FIGURE 4. Alderina smitti Osburn, 1950 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 4. Alderina smitti Osburn, 1950: A, portion of a colony that has grown between two spirorbin tubes. B, close-up of an ovicelled zooid and parts of adjacent zooids, showing granular cryptocyst. Scale bars: A, B, 0.2 mm.
FIGURE 6 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 6. Cymulopora uniserialis Winston & Håkansson, 1986: A, colony of three zooids on a sand grain. B, close-up of outermost zooid, showing the development of the small distal tubercle indicating this was a sexually reproductive brooding zooid. Scale bars: A, 0.2 mm; B, 0.05 mm.
FIGURE 5 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 5. Ammatophora arenacea sp. nov.: A, part of a colony showing ovicelled zooids and tubercles. B, group of three ovicelled zooids, two of the ovicells with small holes, probably bored by a predator. C, close-up of a single ovicelled zooid and tubercles. D, close up of ancestrula showing the crenulated proximal margin. Scale bars: A, 0.5 mm; B, 0.2 mm; C, D, 0.1 mm.
FIGURE 9 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 9. Discoporella gemmulifera sp. nov.: A, upper surface of a large colony. B, lower surface of a smaller colony with buds developing at corners. C, detached bud, a new asexually produced colony. D, E, zooids and vibracular chambers. F, closeup of a vibraculum and zooid. Scale bars: A, B, 1 mm; C, 0.4 mm; D, E, 0.2 mm; F, 0.1 mm.
FIGURE 2. A in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 2. A, Shell grain encrusted by bryozoans and spirorbin polychaetes. B, mineral grain encrusted by an abraded bryozoan colony. C, boring ctenostome colony traces in shell grain. Scale bars: A, B, 0.4 mm; C, 1 mm.
FIGURE 8 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 8. Vibracellina laxibasis (Canu & Bassler, 1928): A, a colony in a crevice of a shell grain. B, skeletal zooids and vibracular chambers. Scale bars: A, 0.5 mm; B, 0.1 mm.
FIGURE 3 in Systematics of interstitial encrusting bryozoans from southeastern Brazil
FIGURE 3. Disporella calcitrapa sp. nov.: A, colony attached to edge of sand grain. B, young colony, showing growth from primary disc and texture of calcification. C, openings of zooid tubes. D, close-up to show spiked projections (spinules) inside and between zooid tubes. Scale bars: A, C, 0.1 mm; B, D, 0.4 mm.
FIGURE 3 in Cliona acephala (Porifera: Demospongiae: Clionaida), a new encrusting excavating reef sponge from the Colombian Caribbean belonging to the Cliona viridis species complex
FIGURE 3. Ground and polished histological sections of the holotype of Cliona acephala n. sp. (A) portion of the ectosome and coral skeleton in an osculum showing sponge tissue with aquiferous canals and excavating chambers in the coral skeleton. (B) Enlargement of the ectosome showing ascending plumose spicule tracts. (C) Excavated chamber filled with tissue, spicules and eggs, and with with characteristic erosion scars on the walls.
FIGURE 2 in Cliona acephala (Porifera: Demospongiae: Clionaida), a new encrusting excavating reef sponge from the Colombian Caribbean belonging to the Cliona viridis species complex
FIGURE 2. Spicules of Cliona acephala n. sp. (A) Tylostyles. (B) Enlargement of heads and tip. (C) SEM enlargement of heads and tip.
FIGURE 4 in Cliona acephala (Porifera: Demospongiae: Clionaida), a new encrusting excavating reef sponge from the Colombian Caribbean belonging to the Cliona viridis species complex
FIGURE 4. Size of tylostyles (width by length) of three specimens of Cliona acephala n. sp. from Santa Marta compared to those of a specimen of C. orientalis (INV-POR 658) from Heron Island, Australia. Data represent specimen means ±1 standard deviation of 25 tylostyles. Hol=holotype; Par=paratype.
FIGURE 1 in Cliona acephala (Porifera: Demospongiae: Clionaida), a new encrusting excavating reef sponge from the Colombian Caribbean belonging to the Cliona viridis species complex
FIGURE 1. Underwater photographs of Cliona acephala n. sp. (A) Bahía de Santa Marta, Morro, 10 July 1987, 15 m. (B) Morro, 10 Jan 1994, 5 m. (C) Ensenada Granate, 12 m, 23 June 2005. (D) Bahía de Santa Marta, Punta de Betín, 25 June 2002, 12 m.
Figure 4 in Morphology of camouflage by encrustation in the spider crabs Schizophrys dahlak and Hyastenus hilgendorfi (Decapoda: Brachyura: Majoidea: Epialtidae) from the Suez Canal, Egypt
Figure 4. Hyastenus hilgendorfi. (a) Clusters of spinules on orbital regions; (b) close-up of a cluster; (c) arrow indicates typical hooked seta on the exoskeleton; (d) annuli on the basal region of the setal shaft of hooked setae indicated by arrow; (e) arrow indicates hair-like setules of pappose setae, randomly distributed on the medial and distal portions of setal shaft; (f) arrow indicates tendri-pappose setae with thread-like setules randomly distributed on proximal and distal portions of setal shaft; (g) cuspidate setae on the exoskeleton; (h) air-dried wedged setae on exoskeleton; (i) critical-pointdried wedged setae.
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