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28 results for “Sphaeriidae”
FIG. 2. A in Zoochorous dispersal of freshwater peaclams (Bivalvia: Sphaeriidae): potential role of aquatic insects
FIG. 2. A. Dorsal and ventral views of the Aeshna juncea (Linnaeus, 1758) dragonfly nymph (Omolon River basin, Magadan Oblast, Russia). B. Euglesa globularis attached to the leg of the Common Hawker dragonfly nymph. C. Dorsal, ventral, and lateral views of the Callicorixa sp. nymph (a small unnamed lakelet near Orotukan settlement, Magadan Oblast, Russia). D. Euglesa parvula attached to the leg of the water boatmen nymph. Scale bars: (A, C) – 1 mm; (B, D) – 0.5 mm. Photos by Aksenova O.V.
РИС. 1. Карта района исследований в бассейне реки Колыма (МагаданскаЯ область, РоссиЯ) (1) оЗеро рЯдом с поселком Оротукан; (2) ОЗеро Лебединое рЯдом с селом Омолон. Фотографии Аксёновой О.В. (1) и Соколовой С.Е. (2). in Zoochorous dispersal of freshwater peaclams (Bivalvia: Sphaeriidae): potential role of aquatic insects
РИС. 1. Карта района исследований в бассейне реки Колыма (МагаданскаЯ область, РоссиЯ) (1) оЗеро рЯдом с поселком Оротукан; (2) ОЗеро Лебединое рЯдом с селом Омолон. Фотографии Аксёновой О.В. (1) и Соколовой С.Е. (2).
FIGURES 6A–G. Pisidium sterkianum, anatomy. A, B in Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America
FIGURES 6A–G. Pisidium sterkianum, anatomy. A, B. Arrangement of inner radial mantle and siphonal muscles. C. Distribution of scars of inner radial mantle muscles. D. Open nephridia, dorsal view. E. Closed nephridium, lateral view. F, G. Inner demibranchs, inner view, showing brood sac in an earlier (F) and advanced (G) stage of development. (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; e: embryo; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop; pa: posterior adductor muscle; pd: pericardial duct; pl: pallial line; pss: pre-siphonal suture; sr1: anal siphon retractor; sr2: retractor muscles corresponding to lacking inhalant opening)
FIGURES 2A–G. Pisidium dorbignyi, anatomy. A. Siphonal and mantle edge musculature. B. Inner radial mantle muscles, lateral view. C in Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America
FIGURES 2A–G. Pisidium dorbignyi, anatomy. A. Siphonal and mantle edge musculature. B. Inner radial mantle muscles, lateral view. C. Distribution of scars of inner radial mantle muscles. D. Inner view of inner demibranch showing the upper position of brood sac. E–G. Nephridium (11, 13: dorsal view of left and right portions; 12: lateral view). (al: ascending lamellae; as: anal siphon; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; irm: inner radial mantle muscles; irms: inner radial mantle muscle scars; ll: lateral loop of nephridium; pa: posterior adductor muscle; pl: pallial line; pss: pre-siphonal; sr1: anal siphon retractor; sr2: retractor muscles corresponding to lacking inhalant opening).
FIGURES 5A–D in Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America
FIGURES 5A–D: Pisidium sterkianum. A, B. Syntypes (ANSP 70490). A. Right valve, lateral view. B. Posterior view. C, D. Pisidium sterkianum. Specimens from Arroyo Miguelín (MLP 5061). C. Left valve, lateral view. D. Left valve, inner view. Scale bars: A–D = 1 mm.
FIGURES 8A–F. Pisidium vile, anatomy. A, B in Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America
FIGURES 8A–F. Pisidium vile, anatomy. A, B. Lateral views of left (38) and right (39) inner mantle border showing siphonal and inner radial mantle muscles. C. Distribution of scars of inner radial mantle muscles. D. Inner view of inner demibranch showing position of developing brood sac. E. Left nephridium, dorsolateral view. F. Nephridia, dorsal view. (al: ascending lamellae; bs: brood sac; dl: descending lamellae; dln: dorsal lobe of nephridium; irm: inner radial mantle muscles; irms: scars of inner radial mantle muscles; ll: lateral loop of nephridium; pa: posterior adductor muscle; pl: pallial line; sr1: anal siphon retractor; sr2: retractor muscles corresponding to the lacking inhalant opening).
FIGURES 1A–F. Pisidium dorbignyi. A in Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America
FIGURES 1A–F. Pisidium dorbignyi. A. Neotype (MHNM 15544), right valve, outer view. B–F. P. dorbignyi (MLP 10497). B. Posterior view. C. Detail of the escutcheon. D. Left valve, inner view. E. Dorsal view. F. Right valve, inner view. Scale bars: A, B, D–F. = 500 μm; C = 200 μm.
FIGURES 7A–F. Pisidium vile. A, B in Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America
FIGURES 7A–F. Pisidium vile. A, B. Syntypes (ANSP 70489). A. Right valve, lateral view. B. Posterior view. C–F. Specimens from Arroyo Miguelín (MLP 5665). C. Posterolateral view, detail of escutcheon. D. Right valve, lateral view. E. Left valve, inner view. F. Right valve, inner view. Scale bars: A, B, D–F = 500 µm; C = 200 µm.
FIGURES 4A–D. Pisidium lebruni, anatomy. A. Gross anatomy. B in Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America
FIGURES 4A–D. Pisidium lebruni, anatomy. A. Gross anatomy. B. Left nephridium in dorsal view. C. Nephridia in lateral view, open type at left, closed type at right. D. Inner view of inner demibranch showing the position of brood sac in early stage of development. (aa. anterior adductor muscle; al: ascending lamellae; as: anal siphon; bs: brood; dl: descending lamellae; dln: dorsal lobe of nephridium; f. foot; h: heart; irm: inner radial mantle muscles; ld: left demibranch; ll: lateral loop of nephridium; n: nephridium; pa: posterior adductor muscle; pd: pericardial duct; pr: pedal retractor muscle; rd: right demibranch).
FIGURES 3A–C. Pisidium lebruni. A in Anatomical characteristics of two enigmatic and two poorly known Pisidium species (Bivalvia: Sphaeriidae) from Southern South America
FIGURES 3A–C. Pisidium lebruni. A. Lectotype (MNHN, Paris), outer lateral view of right valve. B, C. Paralectotypes (MNHN, Paris). B. Right valve, inner view. C. Left valve, outer view. Scale bars: A–C = 1 mm.
Figure 11 in Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae)
Figure 11. New species of Sphaeriinae described in this paper: (A) holotype of Euglesa kolymensis (RMBH No. MSph-787, Russia, Yakutia); (B) holotype of E. kyrgyzyca (RMBH No. MSph-331, Kyrgyzstan); (C) holotype of E. moroccana (RMBH No. MSph-775, Morocco); (D) holotype of Odhneripisidium caucasus (RMBH No. MSph-296, Russia, Krasnodar Region); (E) paratype of O. caucasus (RMBH No. MSph327, Abkhazia). Photos: O.V. Aksenova. Scale bar: 1 mm.
Figure 12 in Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae)
Figure 12. Morphology and anatomy of new Sphaeriinae species described in this paper (teeth morphology and shell pores, anatomy of gills and siphons): (A) holotype of E. kyrgyzyca (RMBH No. MSph-331, Kyrgyzstan); (B) paratype of E. kyrgyzyca (RMBH No. MSph-331, Kyrgyzstan); (C) holotype of E. kolymensis (RMBH No. MSph-787, Russia, Yakutia); (D) holotype of E. moroccana (RMBH No. MSph-775, Morocco); (E) paratype of Odhneripisidium сaucasus (RMBH No. MSph-327, Abkhazia). Photos: O.V. Aksenova. Scale bars: 0.5 mm.
Figure 6 in Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae)
Figure 6. Teeth morphology and shell pores of representatives of the genera in the subfamily Sphaeriinae: (A) Euglesa casertana (Russia, Yamalo-Nenets Autonomus Okrug, Yamal Peninsula); (B) Hindupisidium nevillianum (Myanmar, Inle Lake); (C) Conventus conventus (Russia, Arkhangelsk Region, Novaya Zemlya); (D) Pisidium amnicum (Russia, Nenets Autonomus Okrug, Vashutkiny Lakes); (E) Sphaerium corneum (Russia, Arkhangelsk Region, Bolshoy Solovetsky Island). Photos: O.V. Aksenova. Scale bars: teeth—0.5 mm; pores—20 µm. The left-hand, central column—right and left valves, respectively; the right-hand column—pores.
Figure 5 in Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae)
Figure 5. Representatives of valid genera in the subfamily Sphaeriinae: (A) Euglesa casertana, Russia, Yamalo-Nenets Autonomus Okrug, Gydan Peninsula; (B) Hindupisidium nevillianum (Myanmar, Inle Lake); (C) Conventus conventus, Russia (Arkhangelsk Region, Novaya Zemlya); (D) Pisidium amnicum (Russia, Nenets Autonomus Okrug, Vashutkiny Lakes); (E) Sphaerium corneum (Russia, Arkhangelsk Region, Bolshoy Solovetsky Island); (F) Sphaerium lacustre (Russia, Irkutsk Region, Angara River). Photos: O.V. Aksenova. Scale bar: 1 mm.
Figure 2 in Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae)
Figure 2. The phylogeny of the subfamily Sphaeriinae recovered from ML analysis (W-IQ-TREE) and obtained for the complete dataset of mitochondrial and nuclear sequences (16S rRNA+28S rRNA). Black numbers near nodes are bootstrap support values (BS)/ Bayesian posterior probabilities (BPP). The new taxa are highlighted in red. Subgenera are marked by curly brackets.
Figure 8 in Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae)
Figure 8. (A) The lectotype of Sphaerium nitidum (Russia, Krasnoyarsk Region, Dudinka) (SMNH No.4726); (B) S. nitidum, shell [Russia, Saint Petersburg, Staraya Derevnya (Old Village)] (ZIN No. 23); (C) S. nitidum, shell, nephridia, and teeth morphology (Russia, Vaigach Island, Yangoto Lake); (D) Nephridia, dorsal view of S. corneum (left) and S. nitidum (right) by Odhner (1921). Photos: A. Persson (A), P.V. Kijashko (B) and O.V. Aksenova (C). Scale bars: 1 mm.
Figure 4 in Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae)
Figure 4. Fossil-calibrated phylogeny of the Sphaeriinae calculated under a lognormal relaxed clock model and a Yule process speciation implemented in BEAST 1.10.4 and obtained for the complete dataset of mitochondrial and nuclear sequences (16S rRNA+28S rRNA). Bars indicate 95% HPD of the estimated divergence times between lineages (Mya). Red numbers above the nodes are mean ages (Mya). Black numbers under the nodes are Bayesian posterior probabilities (BPP). Stratigraphic chart according to the International Commission on Stratigraphy (2022) (URL: http://www.stratigraphy.org/ICSchart/ChronostratChart2022-02.pdf). The node pies indicate ancestral area reconstructions of the Sphaeriinae clades (probability of each area combination) in accordance with the generalized biogeographic model (combination of the S-DIVA+DEC+S-DEC models).
Figure 10 in Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae)
Figure 10. Morphology and anatomy of re-described species discussed in this research (teeth morphology and shell pores, anatomy of gills and siphons): (A) Euglesa hinzi (RMBH No. MSph-366, Russia, Gydan Peninsula); (B) E. khurbaensis (RMBH No. MSph-707/2, Russia, Primorsky Territory); (C) E. lindholmi (RMBH No. MSph-370, Russia, Gydan Peninsula); (D) E. ljovushkini (RMBH No. MSph-335, Abkhazia); (E) E. nordenskioldi (Russia, Vaygach Island); (F) E. subterranea (RMBH No. MSph-295, Georgia, Imereti). Photos: O.V. Aksenova. Scale bar: 0.5 mm.
Figure 3 in Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae)
Figure 3. Maps of approximate geographic distribution of six genera of the Sphaeriinae in the world based on available 16S rRNA sequences: (A) Sphaerium; (B) Euglesa; (C) Pisidium s.s.; (D) Odhneripisiduim; (E) Hindupisidium; (F) Conventus.
Figure 1 in Phylogeny, taxonomy, and biogeography of the Sphaeriinae (Bivalvia: Sphaeriidae)
Figure 1. Spatial distribution of the number of available 16S rRNA sequences (A), and species richness of the subfamily Sphaeriinae (B), in the world.
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Allen Brain Atlas
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