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31 results for “Physidae”
FIGURE 2 in Morphological diversification of alien and native aquatic snails of the genus Physa and Aplexa (Gastropoda: Physidae) of Western and Central European range
FIGURE 2. Scanning electron micrographs of the shell apex of Physidae (10.18150/FIZSWX) Horizontally: A—P. acuta (subsidence ponds); B—A. hypnorum (anthropogenic ponds, Poland); C—P. fontinalis (Nida River, Poland); D—P. gyrina (Ireland, The Argory- ditch and Sandy Bay L Neagh; Wales, Gwent Levels in pond in flood plain (l. Killen); E- Apex of the small (young) specimens—1—P. acuta, 2—A. hyponorum, 3—P. fontinalis, 4—P. gyrina (Phot. A–E M. Gawlak).
FIGURE 1 in Morphological diversification of alien and native aquatic snails of the genus Physa and Aplexa (Gastropoda: Physidae) of Western and Central European range
FIGURE 1. Physidae of Western and Central Europe (10.18150/YPDFJU)—general shell morphology A—Physa acuta (Phot. M. Kanturski), B—Aplexa hypnorum, C—Physa fontinalis, D—Physa gyrina; 1—front side of the shell, 2—shell from the side view, 3—back side of the shell (Phot. B–D A. Cieplok, A. Spyra).
FIGURE 6. P in Morphological diversification of alien and native aquatic snails of the genus Physa and Aplexa (Gastropoda: Physidae) of Western and Central European range
FIGURE 6. P. acuta shell features (SEM) (10.18150/G6UWMN); in which the sutural belts are visible (A), the structure of a white lip (B) with characteristic projecting lamellar crystals (C) is indicated by an arrow (Phot. A–C M. Gawlak), (D) a view of the lip visible under the stereoscopic microscope (Phot. M. Kanturski).
FIGURE 8 in Morphological diversification of alien and native aquatic snails of the genus Physa and Aplexa (Gastropoda: Physidae) of Western and Central European range
FIGURE 8. Correspondence Analysis (CA) diagram for the Physidae species; 1—Whorl convexity, 2—Spire, 3—Shell thickness, 4—Thickened appendages, 5—Shell shine, 6—Shell width and height ratio, 7—Aperture height, 8—Shell height, 9—Lip, 10—Apex, 11—Shell width, 12—Aperture width, 13—Spire height.
Fig. 7 in Diversity and Distribution of Peritrich Ciliates on the Snail Physa acuta Draparnaud, 1805 (Gastropoda: Physidae) in a Eutrophic Lotic System
Fig. 7. Non-metric multidimensional scaling (NMDS) for peritrichs species abundance on Physa acuta shell. Stress = 0. C_pol = Carchesium polypinum, E_plic = Epistylis plicatilis, E_sp = Epistylis sp., O_art = Opercularia articulata, T_kel = Thuricola kellicottiana, V_cam = Vorticella campanula, V_sp = Vorticella sp.
Fig. 6 in Diversity and Distribution of Peritrich Ciliates on the Snail Physa acuta Draparnaud, 1805 (Gastropoda: Physidae) in a Eutrophic Lotic System
Fig. 6. Abundance, density, diversity and dominance of peritrich epibionts on sites of the Physa acuta shell. Different letters indicate statistical differences p <0.05 and the symbol *indicate p> 0.05.
Fig. 5 in Diversity and Distribution of Peritrich Ciliates on the Snail Physa acuta Draparnaud, 1805 (Gastropoda: Physidae) in a Eutrophic Lotic System
Fig. 5. Abundance and density of peritrich ciliates on the sites of the Physa acuta shell. Distribution of the total number of epibionts throughout the antero-posterior axis of the shell. © 2018 Academia Sinica, Taiwan
Fig. 4 in Diversity and Distribution of Peritrich Ciliates on the Snail Physa acuta Draparnaud, 1805 (Gastropoda: Physidae) in a Eutrophic Lotic System
Fig. 4. Abundance and density of peritrich species on the surface on the Physa acuta shell. Different letters indicate statistical differences (p <0.05) and * indicates species present exclusively on the dorsal surface.
Fig. 2 in Diversity and Distribution of Peritrich Ciliates on the Snail Physa acuta Draparnaud, 1805 (Gastropoda: Physidae) in a Eutrophic Lotic System
Fig. 2. Schematic representation of the distribution of peritrichs ciliates species on the Physa acuta shell. © 2018 Academia Sinica, Taiwan
Fig. 1 in Diversity and Distribution of Peritrich Ciliates on the Snail Physa acuta Draparnaud, 1805 (Gastropoda: Physidae) in a Eutrophic Lotic System
Fig. 1. in vivo photomicrographics of peritrich ciliates species on Physa acuta. (A-C) Peritrich ciliates attached to the shell. (D) Epistylis sp. (E) Opercularia articulata. (F) Carchesium polypinum. (G) Vorticella sp. (H) Vorticella campanula. (I) Epistylis plicatilis. (J) Thuricola kellicottiana. Scale bars: A = 0.15 cm; B = 1.5 mm; C = 0.5 mm; D-L = 25 µm.
FIGURE 5 in Morphological diversification of alien and native aquatic snails of the genus Physa and Aplexa (Gastropoda: Physidae) of Western and Central European range
FIGURE 5. SEM micrograph of a P. fontinalis shell (10.18150/HIMKRE) (A–C) (Phot. M. Gawlak).
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