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1,088 results for “Bivalves”
FIGURE 1 in Antonbruunia sociabilis sp. nov. (Annelida: Antonbruunidae) associated with the chemosynthetic deep-sea bivalve Thyasira scotiae Oliver & Drewery, 2014, and a re-examination of the systematic affinities of Antonbruunidae
FIGURE 1. Antonbruunia sociabilis sp. nov. (A, B & D, Holotype NMW-Z.2012.074.6; C & E, Paratype NMW-Z.2012.074.9; F, Largest paratype NMW-Z.2012.074.8). A, anterior region, dorsal view; B, Anterior region, lateral view; C, parapod, chaetiger 16, anterior view; D, Posterior region; E, neuropodial chaeta, distal region, chaetiger 17; F, oocytes.
FIGURE 5 in Antonbruunia sociabilis sp. nov. (Annelida: Antonbruunidae) associated with the chemosynthetic deep-sea bivalve Thyasira scotiae Oliver & Drewery, 2014, and a re-examination of the systematic affinities of Antonbruunidae
FIGURE 5. Phylogenetic tree from the combined Bayesian analysis together with support values from the maximum likelihood analysis. First node values represent posterior probabilities from the Bayesian analysis, and second bootstrap support from the maximum likelihood analysis. Antonbruunia sociabilis voucher (NMW-Z.2012.074.13).
FIGURE 4 in Antonbruunia sociabilis sp. nov. (Annelida: Antonbruunidae) associated with the chemosynthetic deep-sea bivalve Thyasira scotiae Oliver & Drewery, 2014, and a re-examination of the systematic affinities of Antonbruunidae
FIGURE 4. Morphometric relationships for Antonbruunia sociabilis sp. nov., and type material of A. viridis and A. gerdesi.
FIGURE 4. A–D in The Pinnotheridae of the northeastern Pacific (Alaska to Mexico): zoogeographical remarks and new bivalve hosts (Crustacea, Brachyura, Pinnotheridae)
FIGURE 4. A–D, Opisthopus transversus Rathbun, 1918 from Punta San Miguel, Todos Santos Bay, Ensenada, Baja California, Mexico. E-H, Pinnotheres nudus Holmes, 1895, from Santa Cruz, California, U.S.A. Adult female: A, E, carapace, dorsal view; B, F, abdomen; C, G, right and left cheliped respectively, outer aspect; D, H, third maxilliped, outer view. A–C, scale 1: 0.5 mm; 2: 0.1 mm; E–H, not to scale.
FIGURE 3. A–E in The Pinnotheridae of the northeastern Pacific (Alaska to Mexico): zoogeographical remarks and new bivalve hosts (Crustacea, Brachyura, Pinnotheridae)
FIGURE 3. A–E, Pinnaxodes gigas Green, 1992, A, near San Quintín, Baja California, Mexico; B–E, San Felipe, Baja California, Mexico: adult female A, dorsal view, carapace width 28.4 mm; adult male, B, carapace, dorsal view; C, third maxilliped, outer view; D, abdomen; E, pereiopods 3–5 (ambulatory legs 2–4). Opisthopus transversus Rathbun, 1893 adult male, Ensenada, Baja California, Mexico: F, carapace, dorsal view; G, third maxilliped, outer view; H, abdomen; I, pereiopods 3–5 (ambulatory legs 2–4). Scale 1: B, 3.4 mm; C, 0.4 mm; F, 1.27 mm; G, 0.36 mm. Scale 2: D, 1.46; E, 2.17; H, 0.73; I, 1.27.
FIGURE 5. A–B in The Pinnotheridae of the northeastern Pacific (Alaska to Mexico): zoogeographical remarks and new bivalve hosts (Crustacea, Brachyura, Pinnotheridae)
FIGURE 5. A–B, Tumidotheres orcutti (Rathbun, 1918) from Cabo Blanco Is., Costa Rica, female (MUCR 2220–11). A, cheliped, outer view; B. tip of cheliped; scale: 1 mm. C–D Tumidotheres margarita (Smith, 1870) from Magdalena Bay, Baja California Sur, Mexico: C–D, cheliped, outer view, female and male respectively. Not to scale.
FIGURE 1. A–C, E in The Pinnotheridae of the northeastern Pacific (Alaska to Mexico): zoogeographical remarks and new bivalve hosts (Crustacea, Brachyura, Pinnotheridae)
FIGURE 1. A–C, E, Fabia subquadrata Dana, 1851 from Todos Santos Bay, Ensenada, Baja California, Mexico: A, Female dorsal view, carapace width 6.7 mm; B–C, third maxilliped of female, carapace width 18.3 mm, inner and outer view respectively; F, male abdomen, carapace width 9.5 mm, dots indicate the area covered by setae. D–E, F. c o nc h ar u m (Rathbun, 1853) from California, U.S.A.: D, third maxilliped outer view, x 30; E, male abdomen, x 15. C–D after Davidson (1968).
FIGURE 2. A in The Pinnotheridae of the northeastern Pacific (Alaska to Mexico): zoogeographical remarks and new bivalve hosts (Crustacea, Brachyura, Pinnotheridae)
FIGURE 2. A, Fabia cocharum (Rathbun, 1853), female showing one line of setae on the ventral margin of the propodus, carapace width 13.4, San Vicente, Ensenada, Baja California, Mexico; B, F. subquadrata Dana, 1851, female showing two lines of setae, one submarginal and second on ventral margin of the propodus, carapace width 6.7 mm, Todos Santos Bay, Ensenada, Baja California, Mexico.
FIGURE 18 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 18. Diagrammatic exterior views of the stomach of Isognomon spathulatus (A, B) and Isognomon ephippium (C, D). A, C—Right lateral view; B, D—Anterior (frontal) view. Abbreviations: e, esophagus; st, gastric chamber ("stomach"); vd, ventral diverticulum.
FIGURE 17 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 17. Major features of the shell of Isognomon ephippium (ZMKU Bil 800082; 65 mm). A, C—Exterior of the right valve; B, D—Interior of the left valve. Abbreviations: aa, anterior auricle; ams, accessory (pedo-byssal) muscle scar; anm, anterior margin; bg, byssal gape; ccs, commarginal calcitic scale; dom, dorsal margin; farms, fused anterior (pedo-byssal) retractor muscle scar; hl, hinge line; lga, ligamental area; mlg, multivincular ligament; nb, border of nacreous layer; pa, posterior auricle; pal, pallial line; pams, posterior adductor muscle scar; pas, posterior auricle sinus; pmg, prismatic margin; pms, pallial muscle scar; pom, posterior margin; prms, posterior (pedo-byssal) retractor muscle scar; rs, radial ray (stripe); u, umbo; vem, ventral margin. Scale bar: 10 mm.
FIGURE 11 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 11. Diagrammatic representation of generalized morphology of ctenidia of Isognomon spathulatus. Abbreviations: abv, afferent blood vessel; cdr, row of ciliated disks; crm, ctenidial longitudinal retractor muscle; cta, ctenidial axis; ds, dorsal septum; ebv, efferent blood vessel; fg, food groove; id, inner demibranch; idb, interdemibranchial buttress; od, outer demibranch; ogf, ordinary gill filament; sm, suspensory membrane; tf, tissue fusion.
FIGURE 16 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 16. Habitat of Isognomon spathulatus at Kungkrabaen Bay, Gulf of Thailand, at low tide. A—Mangrove forest dominated by Rhizophoraceae; B—Individuals of Isognomon spathulatus byssally attached to and wedged into the crevices formed by prop roots of mangrove trees.
FIGURE 15 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 15. Diagrammatic representation of the excretory system and its relation to the pericardium of Isognomon spathulatus in posterior view; dorsal part of adductor muscle and intestine removed (above dotted line). Inset: abnormal bifurcated anal funnel (AMNH 319257; 62 mm). Abbreviations: af, anal funnel; an, anus; aso, abdominal sense organ; au, auricle; in, intestine; k, kidney; pam, posterior adductor muscle; pc, pericardial cavity; ty/tym, fused major and minor typhlosoles; v, ventricle. Scale bar: 150 mm.
FIGURE 7 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 7. Isognomon spathulatus shell microstructure (SEM; AMNH 319258; 55 mm). A—Oval tablets of the outer surface of the nacreous layer; B—Prismatic-nacreous layer boundary at the interior surface of ventral shell margin; C—Exterior surface of the outer shell layer showing polygonal cross-sectional shape of prisms. Scale bars: A: 15 Μm; B: 50 Μm; C: 25 Μm.
FIGURE 3 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 3. Growth series of Isognomon spathulatus. Specimens from the same population; AMNH 319254; 319256; 319257). Abbreviations: cl, calcitic lamella; rr, radial rib. Scale bar: 10 mm.
FIGURE 10 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 10. Labial palps morphology of Isognomon spathulatus (SEM; AMNH 319257; 39 mm). A—Inner surface of the right outer labial palp showing the parallel arrangement of ridges; B—Cross-section of the same palp showing the ridged inner surface (top), smooth outer surface (bottom), and its internal organization. Abbreviations: le, ledge; ri, ridge. Scale bars: 150 Μm.
FIGURE 14 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 14. Diagrammatic views of the gastric chamber of Isognomon spathulatus. A—Left interior view; B—Right interior view. Dotted area indicates extent of the cuticle. Abbreviations: ant, antechamber; cr, cuticular ridge; ddd, duct of digestive diverticula; df, dorsal fold; dgr, dorsal groove; dh, dorsal hood; e, esophagus; ff, fleshy fold; fsc, food-sorting caecum; gs, gastric shield; ig, intestinal groove; lpo, left pouch; mst, main stomach chamber; sh, stirring hollow; sta, striated area; stys/in, merged intestine and style sac; tgr, typhlosolar guard ridge; trf, transverse folds; ty, major typhlosole; tym, minor typhlosole; vd, ventral diverticulum; vf, ventral fold. Scale bar: 1 mm.
FIGURE 9 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 9. Mantle morphology of Isognomon spathulatus (A, B: Histology, 5-µm, PAS stain; AMNH 319258; 52 mm; D: SEM; AMNH 319258; 55 mm). A—Cross-section of the mantle margin; B—Cross-section of the mantle margin at the centralto-contractile zone transition region; C—Fragment from the ventral part of mantle showing the inner surface with distinct central, contractile, and marginal zones; D—Laterodorsal view of the mantle edge with a fragment of OF-2 removed to reveal OF-1 (SEM). Abbreviations: ce, columnar epithelium; cpa, circumpallial artery; cpn, circumpallial nerve; ec, eosinophilic cell; if-n, inner mantle fold; mfb, muscle fiber; mlc, contractile zone of mantle lobe; mlh, homogeneous central zone of mantle lobe; mm, mantle margin; of-n, outer mantle fold; p, periostracum; pgr, periostracal groove; pm, pallial muscle; t, tentacle. Scale bars: A, B: 200 Μm; C: 2 mm; D: 500 Μm.
FIGURE 2 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 2. Diagrammatic representation of major features of the shell of Isognomon spathulatus, showing methods of shell measurements and extent of shape variation. A— Exterior of the right valve; B—Interior of the left valve; C—Consensus of shell and nacre margin outlines (dotted lines) with superimposed profiles of individual specimens based on the analysis of 50 individuals from the same population (see text for details). Abbreviations: aa, anterior auricle; ams, accessory (pedo-byssal) muscle scar; anm, anterior margin; bg, byssal gape; cl, calcitic lamella; dom, dorsal margin; farms, fused anterior (pedo-byssal) retractor muscle scar; hl, hinge line; HS, shell height; lga, ligamental area; LS, shell length; mlg, multivincular ligament; nb, border of nacreous layer; pal, pallial line; pams, posterior adductor muscle scar; pmg, prismatic margin; pms, pallial muscle scar; pom, posterior margin; prms, posterior (pedo-byssal) retractor muscle scar; u, umbo; vem, ventral margin.
FIGURE 13 in Morphology and taxonomy of Isognomon spathulatus (Reeve, 1858), a cryptic bivalve from the mangroves of Thailand
FIGURE 13. Morphology of ctenidia of Isognomon spathulatus (SEM; AMNH 319257; 63 mm). A—Right lateroventral view of ventral part of right ctenidium; B—Abfrontal surface of descending lamella of right demibranch in region of its fusion to ctenidial axis; close-up view of ciliated disks (inset); C—Right lateral view of middle part of right ctenidium; D—Abfrontal surface of lamella showing interfilamentar connections mediated by rows of ciliated disks. Abbreviations: cdr, row of ciliated disks; fg, food groove; id, inner demibranch; od, outer demibranch; ogf, ordinary gill filament; tf, tissue fusion. Scale bars: A: 200 Μm; B, C: 100 Μm; D: 500 Μm.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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OpenNeuro
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