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1,088 results for “Bivalves”
Figure 11 from: Taylor J, Glover E (2013) New lucinid bivalves from shallow and deeper water of the Indian and West Pacific Oceans (Mollusca, Bivalvia, Lucinidae). ZooKeys 326: 69-90. https://doi.org/10.3897/zookeys.326.5786
Figure 11 - Myrtina reflexa new species. A–D Holotype, NHMUK 196838 exterior and interior of right (A–B) and left valves (C–D), L = 10.5 mm E–F Paratype NHMUK 20130121 John Murray Expedition stn 106, exterior and interior of right valve. L = 15 mm G–I Exterior of right valve and interior of right and left valves, MNHN IM 2009-8733, MIRIKY stn DW3239, 14°30'S, 47°26'E, 230–288 m, off NW Madagascar, L = 14.2 mmJ–K Details of hinge of holotype left and right valves. Scale bar = 2.0 mm L Detail of microsculpture, holotype. Scale bar = 50 µm M Protoconch of holotype. Scale bar = 100 µm.
Figure 10 from: Taylor J, Glover E (2013) New lucinid bivalves from shallow and deeper water of the Indian and West Pacific Oceans (Mollusca, Bivalvia, Lucinidae). ZooKeys 326: 69-90. https://doi.org/10.3897/zookeys.326.5786
Figure 10 - Gonimyrtea ferruginea new species. A Holotype, MNHN IM-2009-10376 exterior of left valve. L = 24.5 mm B Holotype, dorsal view C Paratype MNHN IM-2009-10376 exterior right valve L = 15.9 mm D–E Paratype MNHN IM-2009-10376 exterior and interior of right valve, sequenced specimen L = 24.0 mm F–H Paratype MNHN XXXXXXX exterior of right valve and interior of left and right valves. New Caledonia MUSORSTOM 4 stn CP236, 495–550 m, L = 12.5 mm I–L from BATHUS 2: stn DW740, 22°36'S, 166°27'E, 570–605 mI Detail of sculpture, scale bar = 500 µm J, K Details of hinge teeth right and left valves. Scale bar = 1 mm. L Protoconch. Arrow marks boundary between PI and PII. Scale bar = 100 µm.
Figure 2 from: Goto R, Ishikawa H (2016) Borniopsis mortoni sp. n. (Heterodonta, Galeommatoidea, Galeommatidae sensu lato), a new bivalve commensal with a synaptid sea cucumber from Japan. ZooKeys 615: 33-45. https://doi.org/10.3897/zookeys.615.8125
Figure 2 - Holotype of Borniopsis mortoni (UMMZ 305035) (SL 4.1 mm). A, C, E Right valve B, D Left valve F, G Hinge structure of left and right valves. Abbreviations: aa, anterior adductor muscle; ac, anterior cardinal tooth; f, foot; gn, gonad; il, internal ligament; lid, inner demibranch of left side; pa, posterior adductor muscle; rid, inner demibranch of right side; st, stomach. Scale bars 1 mm. Photo credits: R. Goto: A–G.
Figure 1 from: Goto R, Ishikawa H (2016) Borniopsis mortoni sp. n. (Heterodonta, Galeommatoidea, Galeommatidae sensu lato), a new bivalve commensal with a synaptid sea cucumber from Japan. ZooKeys 615: 33-45. https://doi.org/10.3897/zookeys.615.8125
Figure 1 - Borniopsis mortoni and its host. A A crawling individual of Borniopsis mortoni. B Right shell valve of Paratype 4 (NSMT Mo 78969) bleached to remove the periostracum for observation of shell surface sculpture C, D Patinapta ooplax with multiple individuals of Borniopsis mortoni attached E, F Patinapta ooplax in situ in mud flats with Borniopsis mortoni attached (arrowed). Photo credits: H. Ishikawa: A–C, E, F; Y. Hamamura: D. Scale bar: 1 mm.
Figure 3 from: Goto R, Ishikawa H (2016) Borniopsis mortoni sp. n. (Heterodonta, Galeommatoidea, Galeommatidae sensu lato), a new bivalve commensal with a synaptid sea cucumber from Japan. ZooKeys 615: 33-45. https://doi.org/10.3897/zookeys.615.8125
Figure 3 - Paratype 1 of Borniopsis mortoni (UMMZ 305035) (SL 2.4 mm). A, C Right valve B, D Left valve E, F Hinge structure of right and left valves. Abbreviations: ac, anterior cardinal tooth; il, internal ligament. Scale bars 0.5 mm. Photo credits: R. Goto: A–F.
Figure 4 from: Goto R, Ishikawa H (2016) Borniopsis mortoni sp. n. (Heterodonta, Galeommatoidea, Galeommatidae sensu lato), a new bivalve commensal with a synaptid sea cucumber from Japan. ZooKeys 615: 33-45. https://doi.org/10.3897/zookeys.615.8125
Figure 4 - A Borniopsis tsurumaru (SBMNH 149526) B Borniopsis ariakensis (SBMNH 35056) C Borniopsis ochetostomae (SBMNH 149525) and D Borniopsis maipoensis (SBMNH 35126). Photo credits: R. Goto: A–C; P. Valentich-Scott: D. Scale bars 1 mm.
Figure 10 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 10 Specimens of Indospheniakayalum. a–c holotype d–i paratypes showing size series and variations j, k interior and exterior of cleaned shells.
Figure 3 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 3 Scanning electron micrographs of hinges of myids and Potamocorbula. Left hand series are right valves, left hand series are left valves with the chondrophore viewed from above. aMyaarenariabMyatruncatacSpheniabinghamidIndospheniakayalumePotamocorbulaamurensis. Scale bar: 500 µm. Abbreviations: as, anterior socket. at, anterior tooth. fl, posterior flange. lg, ligament plate. ps, posterior socket. pst, pseudotooth. r, ridge. rs, resilifer.
Figure 7 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 7 Scanning electron micrographs of the hinges of Indosphenia species. a chondrophore of I.abbreviata typical form from Port Canning b as a but from narrow form c as a but from distorted form d chondrophore of syntype of Cuspidariaannandaleie chondrophore of I.sowerbyi from Adyar f as e but from Cooum g right valve pseudo tooth in I.abbreviatah right valve pseudotooth in syntype of Cuspidariaannandaleii right valve pseudotooth in I.sowerbyij–k chondrophores in small and large specimens of I.kayaluml–m right valve pseudo tooth small and large specimens of I.kayalumn–o chondrophore and right valve pseudo tooth of I.cochinensis. Scale bar: 5 mm.
Figure 1 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 1 Map of India showing locations of sample sites. Insert showing detailed location of type locality of Indospheniakayalum within the Cochin Backwater.
Figure 6 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 6 Variations of Indospheniaabbreviata all from Port Canning. a, b narrow form , NHMUK 20170343 d–ftumescence form NHMUK 88.12.4.703 e Scanning electron micrograph of interior of d showing radial ridges gintumescence form NHMUK 91.9.19.20. Scale bar: 5 mm.
Figure 2 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 2 Phylogram showing Maximum Likelihood method based on the Hasegawa-Kishino-Yano model. The tree with the highest log likelihood (- 2576.44) is shown. The percentage of trees in which the associated taxa clustered together is shown next to the branches where such values exceed 95%. Initial tree(s) for the heuristic search were obtained automatically by applying Neighbor-Join and BioNJ algorithms to a matrix of pairwise distances estimated using the Maximum Composite Likelihood (MCL) approach, and then selecting the topology with superior log likelihood value. Grey area indicates Myidae.
Figure 5 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 5 Shell variation in Indospheniaabbreviata. a–d typical form from Port Canning, NHMUK 20170342 e, f distorted varieties from Port Canning, NHMUK 20170342 g, h syntype of Corbulaalcocki Port Canning, NHMUK 1909.8.18.33 i, j syntype of Corbulagracilis , Port Canning NHMUK 1909.8.18.32 k–m syntype of Cuspidariaannandalei NMW1955.158.18922. Scale bar: 5 mm.
Figure 13 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 13 Box plots of the ratios of four parameters for shell shape in five populations of Indosphenia. a length to height b posterior length to anterior length c length to tumidity d height to tumidity. Abbreviations: abb, typical I.abbreviata in lot NHMUK 20170342. abb var, I.abbreviata variations in lots NHMUK20170343, NHMUK 91.9.19.20.& NHMUK 88.12.4.703. kayal, I.kayalum. sow ad, I.sowerbyi from Adyar. sow co, I.sowerbyi from Cooum.
Figure 4 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 4 Comparison of shells of three species of epibyssate nestling species of Sphenia. a–cSpheniabinghami, British Isle. d–jSpheniaperversa, Kungkraben Bay, Thailand m–nSpheniaruepellii, Yemen, Arabian Sea.
Figure 11 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 11 a–d Gross anatomy of Indospheniakayaluma left side after removal of the shell b left side after removal of shell and mantle c exterior view of the siphonal apertures d interior view of the siphonal apertures e Gross anatomy of Spheniabinghami from the left side after removal of the shell and anterior mantle. Abbreviations: aa, anterior adductor muscle. exh, exhalant siphon. ft, foot. id, inner demibranch. inh, inhalant siphon. irt, inner ring of tentacles. lp, labial palps. od, outer demibranch. ort, outer ring of tentacles. pa, posterior adductor muscle. per, periostracum. pg, pedal gape. ppr, posterior pedal retractor muscle. rod, reflected portion of outer demibranch. sph, siphons. sphm, siphonal muscles.
Figure 9 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 9 Scanning electron micrographs of the prodissoconchs of Indosphenia species. aI.abbreviata elongate form bI.abbreviata typical form cI.sowerbyidI.kayalum.
Figure 8 from: Oliver PG, Hallan A, Jayachandran PR, Joseph P, Sanu VF, Bijoy Nandan S (2018) Taxonomy of myid bivalves from fragmented brackish-water habitats in India, with a description of a new genus Indosphenia (Myidae, Myoidea, Myidae). ZooKeys 799: 21-46. https://doi.org/10.3897/zookeys.799.25843
Figure 8 Variations of Indospheniasowerbyi. a–c typical form from Adyar river d–e internal views of cleaned valves from Adyar river, pallial line false colour added d. f specimen with epifauna attached to posterior end, from Adyar river g–h specimen from Cooum river j internal showing blotched pattern on dry mantle tissue k posterior sculptured variety from Cooum river l–n Syntype of Spheniasowerbyi from Ariancoupan, Pudicherry NHMUK 1893.3.16.6-7. Scale bar: 5 mm.
Fig. 8 in Drilling predation on Permian brachiopods and bivalves from the Glass Mountains, west Texas
Fig. 8. Plots of specimen size versus drill−hole diameter. A. Brachiopods with drill holes in the pedicle valve. B. Brachiopods with drill hole in the brachial valve. C. All bivalve specimens.
Fig. 6 in Drilling predation on Permian brachiopods and bivalves from the Glass Mountains, west Texas
Fig. 6. Genus selectivity in drilling on Permian brachiopods from West Texas for genera represented by at least 50 individuals. Each bar represents a single genus, the white section of the bar represents specimens that are not drilled and the black section at the top of the bar, when present, indicates drilled specimens. Inset shows the results of a Monte Carlo simulation, using the actual drilling intensity and distribution of genera from the data. The results indicate that the selection of brachiopod prey/host is non−random.
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