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387 results for “Oysters”
Figure 3 in Interpopulation differences in shell forms of the pearl oyster, Pinctada imbricata radiata (Bivalvia: Pterioida), in the northern Persian Gulf inferred from principal component analysis and elliptic Fourier analysis
Figure 3. The first and second principal components scores of P. imbricata radiata from Hendourabi () and Lavan (▲) islands generated by PCA.
Figure 5 in Interpopulation differences in shell forms of the pearl oyster, Pinctada imbricata radiata (Bivalvia: Pterioida), in the northern Persian Gulf inferred from principal component analysis and elliptic Fourier analysis
Figure 5. Shape variation of EFA analysis in P. imbricata radiata from Lavan and Hendourabi islands.
Figure 4 in Interpopulation differences in shell forms of the pearl oyster, Pinctada imbricata radiata (Bivalvia: Pterioida), in the northern Persian Gulf inferred from principal component analysis and elliptic Fourier analysis
Figure 4. The first and second principal components scores of P. imbricata radiata from Hendourabi () and Lavan (▲) islands calculated by PCA performed on the normalized EFDs.
Figure 4 in New record of an oyster species from Chilika Lagoon, Odisha, north-western Bay of Bengal
Figure 4. Ligament area, hinge dentition and white layer showing layer of mother pearl in I. ephippium.
Figure 6 in New record of an oyster species from Chilika Lagoon, Odisha, north-western Bay of Bengal
Figure 6. Sessile organisms on the shell of I. ephippium. A. Calcareous tube of marine polychaeta, B. Gastropod full egg capsule, C. Reminiscent of attached bivalve and barnacles, D. Empty gastropods egg capsule over oyster shell collected from "Arakhkuda" region.
Figure 3 in New record of an oyster species from Chilika Lagoon, Odisha, north-western Bay of Bengal
Figure 3. (A&B). Exterior of the Bivalve Isognomon ephippium, (C&D). Internal part of I. ephippium.
Figure 5. A in New record of an oyster species from Chilika Lagoon, Odisha, north-western Bay of Bengal
Figure 5. A. Mangrove vegetation at outer channel area of Chilika lagoon. B. Large bivalve colony exposed during low tide period at mangrove vegetation of "Bhabakundaleswar" region, C. Occurrence of multiple colonies of Isognomon ephippium in the sea grass bed at "Arakhkuda", D. Single colony of I.ephippium from mangrove vegetation.
Figure 4 in Estimation of individual growth of the violet oyster Chama coralloides Reeve, 1846 (Bivalvia: Venerida) using Schnute model cases
Figure 4. Fitted growth curves for the best cases of the Schnute model for a population of C. coralloides in Acapulco, Guerrero, Mexico (* indicates the best model).
Figure 2 in Estimation of individual growth of the violet oyster Chama coralloides Reeve, 1846 (Bivalvia: Venerida) using Schnute model cases
Figure 2. Monthly frequency distribution of lengths (bars) and modal groups (curves) for C. coralloides in Acapulco, Guerrero, Mexico.
Fig. 4 in The Oysters Of Hong Kong (Bivalvia: Ostreidae And Gryphaeidae)
Fig. 4. Crassostrea, Saccostrea and Planostrea from Hong Kong showing external and internal views of the right valves and the internal views of the left valves. A-C. C. ariakensis (NHM 20030470). D-F. S. cucullata (NHM 20030496). G-I. S. mordax (NHM 20030492). JL. P. pestigris (SBMNH 345716). Scale bar = 20 mm.
Fig. 5 in The Oysters Of Hong Kong (Bivalvia: Ostreidae And Gryphaeidae)
Fig. 5. Dendostrea and Ostrea from Hong Kong showing external and internal views of the right valves and the internal views of left valves. A-C. D. folium (SBMNH 345717). D-F. D. crenulifera (NHM 20030493). G-I. O. denselamellosa (AM 108985). Scale bar = 20 mm.
Fig. 3 in The Oysters Of Hong Kong (Bivalvia: Ostreidae And Gryphaeidae)
Fig. 3. Crassostrea from Hong Kong showing external and internal views of the right valves and the internal views of the left valves. AC. C. lugubris (NHM 20030490). D-F. C. angulata (NHM 20030491). G-I. C. hongkongensis (NHM 20020501). Scale bars = 20 mm.
Fig. 6 in The Oysters Of Hong Kong (Bivalvia: Ostreidae And Gryphaeidae)
Fig. 6. Hyotissa from Hong Kong showing external and internal views of the right valves and the internal views of left valves. A-C. H. imbricata (SBMNH 345718). D-F. H. sinensis (NHM 20030494). Scale bar = 20 mm.
Fig. 2 in The Oysters Of Hong Kong (Bivalvia: Ostreidae And Gryphaeidae)
Fig. 2. Neighbour-joining tree based on Kimura 2-parameter distances with 1000 bootstraps using COI mtDNA partial sequences (~618 nt) of Crassostrea. The bootstrap percentages supporting each node of the neighbour-joining and most parsimonious trees are indicated above and below the branches, respectively. Only values>70 are shown. The scale represents percentage substitutions. Ostrea chilensis is employed as outgroups. YSO1 to 6, HHW1 to 6 and TT1 to 3 are samples collected from Yung Shue O, Hoi Ha Wan and Tai Tam, Hong Kong, respectively.
Fig. 7 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review
Fig. 7. Gryphaeid oyster Pernostrea mesezhnikovi sp. nov., Lower Volgian, Lopsiya River, Northern Urals. A. TsSGM 2048/17, holotype, interior of right valve (A1), exterior of left valve with attached oyster (A2). B. TsSGM 2048/24, paratype, interior of right valve. C. TsSGM 2068/33, paratype, interior of left valve.
Fig. 11 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review
Fig. 11. Gryphaeid oyster Pernostrea? robusta sp. nov., Middle Volgian, Yatriya River, Subpolar Urals,. A. TsSGM 2068/37, interior of right valve. B. TsSGM 2068/36, interior of right valve. C. TsSGM 2068/35, interior of right valve. D. TsSGM 2068/38, interior of left valve attached to other oyster shell.
Fig. 10 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review
Fig. 10. Comparison of morphology Deltoideum vs. Pernostrea. A, C. Deltoideum delta (Smith, 1817) (labelled as "Ostrea deltoidea"), Kimmeridgian, La Hève, France. A. NHM 204314, interior of right valve. C. NHM 204314, interior of left valve. B, D. Pernostrea mesezhnikovi sp. nov., Lower Volgian, Lopsiya River, Northern Urals. B. TsSGM 2068/30, interior of right valve. D. TsSGM 2068/84, interior of left valve.
Fig. 3 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review
Fig. 3. Main morphological characters of oysters. A. Left valve of Phygraea (Gryphaeidae, Pycnodonteinae), TsSGM 2068/88, inner view. B. Left valve of Crassostrea (Flemingostreidae, Crassostreinae), TsSGM 2068/13, inner view. C. Left valve of Pernostrea (Gryphaeidae, Gryphaeinae), TsSGM 2068/2, inner view.
Fig. 6. Gryphaeid oysters from the subgenus Boreiodeltoideum. A, E in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review
Fig. 6. Gryphaeid oysters from the subgenus Boreiodeltoideum. A, E. Deltoideum (Boreiodeltoideum) borealis sp. nov. A. TsSGM 2068/31, paratype, Lower Kimmeridgian, Lopsiya River, Northern Urals; exterior (A1) and interior (A2) of left valve. E. TsSGM 150/3887, holotype, Lower Kimmeridgian, Khatanga depression, north of Eastern Siberia; interior of RV (E1) and exterior of LV (E2). B–D, F. Deltoideum (Boreiodeltoideum) praeanabarensis Zakharov, 1966), Lower Volgian, Dyabaka-Tari River, north of Eastern Siberia. B. TsSGM 2068/10, view on left (B1) and right (B2) valves. C. TsSGM 2068/57, interior of right valve. D. TsSGM 2068/8, exterior (D1) and interior (D2) of left valve. F. TsSGM 150/2031, interior of left valve.
Fig. 9 in Late Jurassic-Early Cretaceous oysters from Siberia: A systematic review
Fig. 9. Gryphaeid oyster Pernostrea mesezhnikovi sp. nov., Lower Volgian, Lopsiya River, Northern Urals. A. TsSGM 2048/23, left (A1) and right (A2) valve views, view from posterior side (A3). B. TsSGM 2068/34, left (B1) and right (B2) valve views. C. TsSGM 2068/32, exterior (C1) and interior (C2) of left valve, view from anterior side (C3).
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