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69 results for “Pectinidae”
FIG. 2. — Analyse factorielle des correspondances. Projection des 77 in Révision de Flabellipecten solarium (Lamarck, 1819) (Mollusca, Bivalvia, Pectinidae) du Miocène moyen et supérieur de l'Ancien Monde
FIG. 2. — Analyse factorielle des correspondances. Projection des 77 individus (73 principaux et 4 supplémentaires,) et des 10 variables (voir Fig. 1) dans le plan factoriel 1-2., Gigantopecten ligerianus (Dollfus & Dautzenberg, 1906);, Gigantopecten gigas (Schlotheim, 1813);, Flabellipecten solarium (Lamarck, 1819). Les contours et profils de quelques valves ont été ajoutés pour illustrer les résultats de l'analyse. Abréviations: cdp, coup de pouce (pour G. ligerianus) CMD, profondeur de la valve ou convexité maximale; DAP, diamètre antéro-postérieur; DUP, diamètre umbono-palléal (cette variable de référence est un indicateur de taille car prise dans la direction de croissance au niveau du plan directeur de la coquille); HOA, hauteur de l'oreille antérieure; HOP, hauteur de l'oreille postérieure; HPL, demi-hauteur postérieure, mesurée de la ligne cardinale au maximum de la largeur; LAH, demi-longueur antérieure prise au maximum ventral de la hauteur; LIC, longueur de la ligne cardinale; RAD, renfoncement antérieur du disque; RPD, renfoncement postérieur du disque (ces deux dernières variables permettent de caractériser la forme du disque: étiré dans le sens antéro-postérieur, donc plus ou moins ovale, lorsque ces renfoncements sont importants, plus arrondi lorsqu'ils sont plus faibles). Échelle: 2 cm.
FIG. 7 in Révision de Flabellipecten solarium (Lamarck, 1819) (Mollusca, Bivalvia, Pectinidae) du Miocène moyen et supérieur de l'Ancien Monde
FIG. 7. — Carte de répartition paléogéographique de Flabellipecten solarium (Lamarck, 1819) () dans la Paratéthys au Badénien inférieur à moyen (contours d'après Rögl & Steininger 1983). ➝ I.-P., vers l'Indo-Pacifique; ✩, Llubjlana.
FIG. 4. — A, B in Révision de Flabellipecten solarium (Lamarck, 1819) (Mollusca, Bivalvia, Pectinidae) du Miocène moyen et supérieur de l'Ancien Monde
FIG. 4. — A, B, Flabellipecten solarium (Lamarck, 1819), lectotype; A, valve droite, face interne; B, vue dorsale du bivalve; C, F. solarium, Narrosse (Landes), oreilles vues sur la face interne d'une valve gauche adulte et dentelons auriculaires (daa, dentelon antérieur; dap, dentelon postérieur), coll. Cossmann, MNHN, n° 15065, figurée sous le nom de Pecten incrassatus Partsch par Cossmann & Peyrot (1914: pl. 16, fig. 10); D, E, Gigantopecten ligerianus (Dollfus & Dautzenberg, 1906), Chavagnes-les-Eaux (Maine-et-Loire), bassin de Doué-la-Fontaine, valve droite adulte conservée sous le nom de Pecten solarium dans les coll. paléontologiques de l'Institut catholique d'Angers; D, face externe; E, vue dorsale; F, G. ligerianus, Channay-sur-Lathan (Indre-et-Loire), oreilles vues sur la face interne d'une valve gauche adulte et dentelons auriculaires, coll. Bongrain. A, B, clichés P. Lozouet (MNHN). Échelles: 2 cm.
FIG. 8 in Révision de Flabellipecten solarium (Lamarck, 1819) (Mollusca, Bivalvia, Pectinidae) du Miocène moyen et supérieur de l'Ancien Monde
FIG. 8. — Carte de répartition paléogéographique de Flabellipecten solarium (Lamarck, 1819) () dans la Téthys (contours d'après Dercourt et al. 1985) et sur la façade atlantique (contours d'après Cahuzac et al. 1992) au Serravallien-Tortonien. Abréviations: Al, Alboran; Ca, Calabre; ME, meseta espagnole; MO, meseta oranaise; ✩, Doué-la-Fontaine.
FIG. 1 in Révision de Flabellipecten solarium (Lamarck, 1819) (Mollusca, Bivalvia, Pectinidae) du Miocène moyen et supérieur de l'Ancien Monde
FIG. 1. — Mesures prises sur les valves gauches des spécimens comparés de Flabellipecten solarium (Lamarck, 1819), Gigantopecten gigas (Schlotheim, 1813) et G. ligerianus (Dollfus & Dautzenberg, 1906). Abréviations: cdp, coup de pouce (pour G. ligerianus) CMD, profondeur de la valve ou convexité maximale; DAP, diamètre antéro-postérieur; DUP, diamètre umbonopalléal (cette variable de référence est un indicateur de taille car prise dans la direction de croissance au niveau du plan directeur de la coquille); HOA, hauteur de l'oreille antérieure; HOP, hauteur de l'oreille postérieure; HPL, demi-hauteur postérieure, mesurée de la ligne cardinale au maximum de la largeur; LAH, demi-longueur antérieure prise au maximum ventral de la hauteur; LIC, longueur de la ligne cardinale; RAD, renfoncement antérieur du disque; RPD, renfoncement postérieur du disque (ces deux dernières variables permettent de caractériser la forme du disque: étiré dans le sens antéro-postérieur, donc plus ou moins ovale, lorsque ces renfoncements sont importants, plus arrondi lorsqu'ils sont plus faibles). Échelle: 2 cm.
Figs 46–48. Aequipecten commutatus peripheralis subsp. n. 46–47. Holotype, NMSA E8964, off Matigulu R in The family Pectinidae in South Africa and Mozambique (Mollusca: Bivalvia: Pectinoidea)
Figs 46–48. Aequipecten commutatus peripheralis subsp. n. 46–47. Holotype, NMSA E8964, off Matigulu R., Zululand, 200–220 m, 19.4 x 18.4 mm. 46. LV exterior. 47. LV interior. 48. Paratype, NMSA E8964, same loc., 19.4 x 18.3 mm, RV interior.
Figs 1–2. Delectopecten musorstomi Poutiers, 1981 in The family Pectinidae in South Africa and Mozambique (Mollusca: Bivalvia: Pectinoidea)
Figs 1–2. Delectopecten musorstomi Poutiers, 1981: NMSA C910, off Mtamvuna R., Transkei, 143 m, pv, 6.1 x 6.1 mm. 1. LV exterior. 2. RV exterior.
Figs. 25–26 in The family Pectinidae in South Africa and Mozambique (Mollusca: Bivalvia: Pectinoidea)
Figs. 25–26. Laevichlamys lemniscata (Reeve, 1853): NMSA S8958, off Kosi Bay, Zululand, 51 m, pv, 48.6 x 44.1 mm. 25. LV exterior. 26. RV exterior.
Fig. 49 in The family Pectinidae in South Africa and Mozambique (Mollusca: Bivalvia: Pectinoidea)
Fig. 49. Cryptopecten bullatus (Dautzenberg & Bavay, 1912): NMSA D1485, off Amanzimtoti, Natal, 160– 170 m, 16.1 x 16.0 mm, LV exterior.
Figs 44–45 in The family Pectinidae in South Africa and Mozambique (Mollusca: Bivalvia: Pectinoidea)
Figs 44–45. Mimachlamys sanguinea (Linnaeus, 1758): NMSA G3464, Benguera Is., Mozambique, pv, 53.2 x 50.1 mm. 44. LV exterior. 45. RV exterior.
Fig. 35 in The family Pectinidae in South Africa and Mozambique (Mollusca: Bivalvia: Pectinoidea)
Fig. 35. Semipallium tigris (Lamarck, 1819): NMSA D7518, off Boteler Point, Zululand, 78 m, 50.4 x 44.8 mm, RV exterior.
Figs 5–6 in The family Pectinidae in South Africa and Mozambique (Mollusca: Bivalvia: Pectinoidea)
Figs 5–6. Pseudamussium gilchristi (Sowerby, 1904): NMSA E3100, Agulhas Bank, 200 m, pv, 30.8 x 31.1 mm. 5. LV exterior. 6. RV exterior.
Figure 3 in The Black Sea Flexopecten species-complex (Mollusca: Bivalvia: Pectinidae): Shell morphology and 16S rDNA variation
Figure 3. Plot of shell length (H: in mm) versus Index of Morphological Plasticity (ΓK1).
Fig. 4 in Association Between The Scallop, Pedum Spondyloideum, (Bivalvia: Pteriomorphia: Pectinidae) And Scleractinian Corals From The Wakatobi Marine National Park (Southeastern Sulawesi, Indonesia)
Fig. 4. The number of Pedum spondyloideum occuring in Porites lobata and Por. lutea.
Metal and Metalloid Bioaccumulation in Nodipecten nodosus (Linnaeus, 1758) Scallops (Mollusca: Pectinidae) Cultivated in Southeastern Brazil and Associated Public Health Issues
<p>Supplementary Table S1. Instrumental ICP-MS conditions for metal and metalloid detection in lion’s paw scallops in Southeastern Brazil. <strong>Table S2.</strong> Metal accumulation levels for Cd, Cu, Zn and Ni between scallop species and different locations worldwide. All data are expressed as μg. g<sup>-1</sup>w.w. FAAS - Flame Atomic Absorption Spectrometry, ICP-MS - Inductively Coupled Plasma Mass Spectrometry, ICP-OES - Inductively Coupled Optical Emission Spectrometry, ATFS – Atomic Fluorescence Spectrometry. <strong>Table S3</strong>. Metal accumulation levels for Pb, Cr, Fe and Mn between scallop species and different locations worldwide. All data are expressed as μg. g<sup>-1</sup>w.w. FAAS - Flame Atomic Absorption Spectrometry, ICP-MS - Inductively Coupled Plasma Mass Spectrometry, ICP-OES - Inductively Coupled Optical Emission Spectrometry, ATFS – Atomic Fluorescence Spetrometry</p>
Assessing the genetic diversity in Argopecten nucleus (Bivalvia: Pectinidae), a functional hermaphrodite species with extremely low population density and self-fertilization: effect of null alleles
<p>Argopecten nucleus is a functional hermaphroditic pectinid species that exhibits self-fertilization, whose natural populations have usually very low densities. In the present study, the genetic diversity of a wild population from Neguanje Bay, Santa Marta (Colombia), was estimated using microsatellite markers, and the effect of the presence of null alleles on this estimation was assessed. A total of 8 microsatellite markers were developed, the first described for this species, and their amplification conditions were standardized. They were used to determine the genotype of 48 wild individuals from Naguanje Bay, and 1010 individuals derived from the offspring of 38 directed crosses. For each locus, the frequencies of the identified alleles, including null alleles, were estimated using the statistical package Micro-Checker, and the parental genotypes were confirmed using segregation analysis. Three to 8 alleles per locus with frequencies from 0.001 to 0.632 were detected. The frequencies of null alleles ranged from 0.10 to 0.45, with Ho from 0.0 to 0.79 and He from 0.53 to 0.80. All loci were in H-W disequilibrium. The null alleles frequencies values were high, with lower estimations using segregation analysis than estimated using Micro-Checker. The present results show high levels of population genetic diversity, and indicate that null alleles were not the only cause of deviation from HW equilibrium in all loci, suggesting that the wild population under study presents signs of inbreeding and Wahlun effect.</p>
Data from: New Neogene taxa of the tribe Chlamydini Teppner, 1922 (Pectinidae, Bivalvia) of southern South America
The Chilean species traditionally assigned to the genera Chlamys Röding, 1798 or Zygochlamys Ihering, 1907 are now placed in two new endemic South American taxa: Dietotenhosen n. gen. (middle Miocene–early middle Pliocene) to include the southeastern Pacific Ocean species D. hupeanus (Philippi, 1887) n. comb. and D. remondi (Philippi, 1887) n. comb., and Ckaraosippur n. gen. (earliest middle Miocene–Pliocene) for C. calderensis (Möricke, 1896) n. comb. (Chile) and C. camachoi n. sp. (Argentina). Both genera are the youngest survivors of the tribe Chlamydini in southern South America. None of them are related to the circumpolar genus Psychrochlamys Jonkers, 2003, and the previous proposal of the dispersal through the Antarctic Circumpolar Current for the species included herein in Dietotenhosen is rejected.
FIGURE 13 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 13. Pattern of byssal notch morphogenesis in extant Pectinids displaying different mode of life (not to scale). 1–3: first successive ontogenetic stages exemplified by juveniles of Pecten maximus (1: postlarval; 2: without ctenolium; 3: with ctenolium); a–g: adults, byssally fixed (a–d), freeliving (f–g), or both (e); ct: ctenolium; P: prodissoconch. a: Bathypecten vulcani; b: Sinepecten segonzaci; c: Hemipecten forbesianus; d: Chlamys varia; e: Aequipecten opercularis; f: Pecten maximus; g: Propeamussium watsoni. Thick black arrows indicate ontogenetic trajectories. Thin arrows outline the main growth allometries (parallel to commissure plan only) around byssal notch. For (b), crosses indicate place of byssal notch covered by its ventral edge and thus invisible (see Figure 6). Black anterior auricle of (f) corresponds to stage 3.
FIGURE 11 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 11. SEM views of specimens 2 (a, b, e) and 4 (c, d, f) of Sinepecten segonzaci. a: outer view of the left valve; b: same valve, detail of the ornamentation near the ventral margin of the disk; c: left valve, anterior margin of the disk; d: same valve, magnification of the antimarginal microsculpture; e: same valve, detail of ornamentation on the anterior edge of the anterior auricle; f: particles embedded on the disk surface of the right valve; on all figures arrow indicates the growth direction.
FIGURE 10 in A new deepsea pectinid bivalve from thermal vents of Manus backarc Basin (southwestern Pacific), Sinepecten segonzaci n. gen., n. sp. (Pectinoidea: Pectinidae), and its relationships with the genera Bathypecten and Catillopecten
FIGURE 10. Coiling of dorsal edge of anterior auricle and of outer ligament insertion. Left: interior view of right valve anterior auricle (not exactly to scale: height of outer ligament insertion oversized). Right: proximal (A) and distal (B) sections of bivalve shell through anterior auricle. aa: anterior auricle; bn: byssal notch; h: hinge; lv: left valve; oli: outer ligament insertion; ri: resilium insertion (inner ligament); rv: right valve.
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