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8,443 results for “gastropoda”
FIGURE 7 in The genus Pupa Röding, 1798 (Mollusca, Gastropoda, Acteonidae) in New Caledonia with notes on Recent species
FIGURE 7. Scanning electron micrographs of the radulae of specimens from Koumac, New Caledonia. A. Pupa solidula (Linnaeus, 1758), MNHN IM-2013-86155. B. Pupa sulcata (Gmelin, 1791), MHNH IM-2013-86146. C. Pupa nitidula (Lamarck, 1822), MNHN IM-2013-86157. D. Pupa coccinata (Reeve, 1842), MHNH IM-2013-86143. E. Pupa affinis (A. Adams, 1855), MNHN IM-2013-86144. F. Pupa charlesi sp. nov., MNHN IM-2013-86154.
FIGURE 6 in The genus Pupa Röding, 1798 (Mollusca, Gastropoda, Acteonidae) in New Caledonia with notes on Recent species
FIGURE 6. Photographs of the anterior portion of the digestive system of specimens from Koumac, New Caledonia. A. Pupa solidula (Linnaeus, 1758), MNHN IM-2013-86155. B. Pupa sulcata (Gmelin, 1791), MHNH IM-2013-86146. C. Pupa nitidula (Lamarck, 1822), MNHN IM-2013-86157. D. Pupa coccinata (Reeve, 1842), MHNH IM-2013-86143. E. Pupa affinis (A. Adams, 1855), MNHN IM-2013-86144. F. Pupa charlesi sp. nov., MNHN IM-2013-86154.
FIGURE 16 in The genus Pupa Röding, 1798 (Mollusca, Gastropoda, Acteonidae) in New Caledonia with notes on Recent species
FIGURE 16. Photographs of shell specimens of Pupa niecaensis (Barnard, 1963) (A), Pupa pascuana Raines, 2003 (B) and Pupa charlesi sp. nov. (C–E). A. Holotype of Pupa niecaensis (Barnard, 1963) (SAM A6553), ©SAM, photo by R. Adams. B. Holotype of Pupa pascuana Raines, 2003 (LACM 2954). C–E. Specimens of Pupa charlesi sp. nov. from Koumac, New Caledonia, (C) MHNH IM-2013-86154, (D) MHNH IM-2013-86159, (E) MHNH IM-2013-86158.
FIGURE 5 in The genus Pupa Röding, 1798 (Mollusca, Gastropoda, Acteonidae) in New Caledonia with notes on Recent species
FIGURE 5. Photographs of the male reproductive organs of specimens from Koumac, New Caledonia. A. Pupa solidula (Linnaeus, 1758), MNHN IM-2013-86155. B. Pupa sulcata (Gmelin, 1791), MHNH IM-2013-86146. C. Pupa nitidula (Lamarck, 1822), MNHN IM-2013-86157. D. Pupa coccinata (Reeve, 1842), MHNH IM-2013-86143. E. Pupa affinis (A. Adams, 1855), MNHN IM-2013-86144. F. Pupa charlesi sp. nov., MNHN IM-2013-86154.
FIGURE 4 in The genus Pupa Röding, 1798 (Mollusca, Gastropoda, Acteonidae) in New Caledonia with notes on Recent species
FIGURE 4. Photographs of the opercula of specimens from Koumac, New Caledonia. A. Pupa solidula (Linnaeus, 1758), MNHN IM-2013-86152. B. Pupa sulcata (Gmelin, 1791), MHNH IM-2013-86146. C. Pupa nitidula (Lamarck, 1822), MNHN IM-2013-86157. D. Pupa coccinata (Reeve, 1842), MHNH IM-2013-86143. E. Pupa affinis (A. Adams, 1855), MNHN IM- 2013-86144. F. Pupa charlesi sp. nov., MNHN IM-2013-86158.
FIGURE 3 in The genus Pupa Röding, 1798 (Mollusca, Gastropoda, Acteonidae) in New Caledonia with notes on Recent species
FIGURE 3. Photographs of shell specimens of Pupa solidula (Linnaeus, 1758), ventral view. A. Specimen from Koumac, New Caledonia (MHNH IM-2013-86155). B. Specimen from Koumac, New Caledonia (MHNH IM-2013-86164). C. Neotype of Pupa solidula (Linnaeus, 1758) (MHNH IM-2013-86152). D. Specimen from Koumac, New Caledonia (MHNH IM-2013- 86163).
FIGURE 2 in The genus Pupa Röding, 1798 (Mollusca, Gastropoda, Acteonidae) in New Caledonia with notes on Recent species
FIGURE 2. Photographs of live animals from Koumac, New Caledonia, dorsal view. A. Pupa solidula (Linnaeus, 1758), MHNH IM-2013-86155. B–C. Pupa sulcata (Gmelin, 1791), (B) MHNH IM-2013-86145, (C) MHNH IM-2013-86160. D. Pupa nitidula (Lamarck, 1822), MHNH IM-2013-86157. E. Pupa coccinata (Reeve, 1842), MHNH IM-2013-86143. F. Pupa affinis (A. Adams, 1855), MNHN IM-2013-86144. G. Pupa charlesi sp. nov., MHNH IM-2013-86159.
FIGURE 1 in The genus Pupa Röding, 1798 (Mollusca, Gastropoda, Acteonidae) in New Caledonia with notes on Recent species
FIGURE 1. Bayesian consensus tree of the concatenated 16S, COI and H3 genes. Posterior probabilities from the Bayesian analysis are listed above each branch; bootstrap values from the maximum likelihood analysis are listed below each branch. The histogram represents the distance plot for the ASAP analysis using the COI gene showing pairwise p-distances (Kimura 2 model) among candidate species.
Data for: Coping with abrasive food – diverging composition of radular teeth in two Porifera-consuming nudibranch species (Mollusca, Gastropoda)
<p><span>Molluscs forage with their radula, a chitinous membrane with teeth. Adaptations to hard or abrasive ingesta were well studied in Polyplacophora and Patellogastropoda, but for other taxa, there are large gaps in knowledge. Here, we investigated the nudibranch gastropods <em>Felimare</em> <em>picta</em> and <em>Doris</em> <em>pseudoargus</em>, both of which feed on Porifera. Tooth morphologies were documented by scanning electron microscopy and mechanical properties were tested by nanoindentation. We found that these parameters are rather similar in both species, indicating that teeth are similar in their function. To study the composition, teeth were visualized using confocal laser scanning microscopy (CLSM), to determine the degree of tanning, and analysed with energy-dispersive X-ray spectroscopy, to test the elemental composition. The emitted autofluorescence signal and the inorganic content differed between the species. This was especially prominent when studying the inner and outer tooth surfaces (leading and trailing edges). In <em>F. picta</em>, we detected high proportions of Si, whereas teeth of <em>D. pseudoargus</em> contained high amounts of Ca, which influenced the autofluorescence signal in CLSM. Employing nanoindentation, we determined high Young's modulus and hardness values for the leading edges of teeth, which relate to the Si- and Ca-content. This highlights that teeth with a similar morphology and mechanical properties can be mechanically enhanced via different chemical pathways in Nudibranchia.</span></p>
Fig. 1 in A New Species of Apple Snail in the Genus Pomacea (Gastropoda: Caenogastropoda: Ampullariidae)
Fig. 1. Key morphological characteristics of Pomacea occulta nov. sp. (A) Shell morphology of FG 609800 (upper) and FG 609801 (lower). (B) Opercula external and internal surfaces of FG 609800 (left) and FG 609801 (right). (C) Radular morphology of FG 609800. (D) Male reproductive morphology of YYHMD 18082917. (E) Outline of kidney morphology. (F) Egg morphology of two clutches. (G) Apertural view, apical view, and embryonic whorl close-up of the shells of 1-day-old hatchlings. Abbreviations: apsg, apical penis sheath gland; mpsg, medial penis sheath gland; ak, anterior kidney; pk, posterior kidney. Scale bars: A, B = 1 cm; C = 100 µm; D = 1 mm; E = 2 mm; F = 5 mm; G = 300 µm.
Figure 3 in The Roman snail (Gastropoda: Helicidae) is not a generalist herbivore, but shows food preferences for Urtica dioica and plant litter
Figure 3. Relationship between the average width (a and c) and height (b and d) of Helix pomatia shells per subpopulation independent of the sample date (), and for individual sample dates (●), and the average proportion of individuals feeding on (a, b) Urtica dioica, or (c, d) plant litter.
Figure 2 in The Roman snail (Gastropoda: Helicidae) is not a generalist herbivore, but shows food preferences for Urtica dioica and plant litter
Figure 2. Relationship between the average feeding height of Helix pomatia in the vegetation per subpopulation, independent of the sample date () or for individual sample dates (●), and the average proportion of individuals feeding on (a) Urtica dioica or (b) plant litter.
Figure 1 in The Roman snail (Gastropoda: Helicidae) is not a generalist herbivore, but shows food preferences for Urtica dioica and plant litter
Figure 1. Distance-based redundancy analysis db (RDA) plot showing the resemblance between Helix pomatia subpopulations based on the average diet composition of snails in different subpopulations and at different dates. Subpopulations 1–8 are indicated by different colours and symbols. Vectors are fitted for the predictor variables selected in the distance-based linear model (black: Hgt.shl, average shell height, Hgt.veg, average feeding heigh; Wdt.shl, average width of shells; Smp.day, sample day). Diet resources (in red, with: Urt.dio, Urtica dioica; litter, plant litter) with multiple correlation coefficients> 0.3 are superimposed.
FIGURE 5 in First record of the family Diplommatinidae Gray, 1847 (Gastropoda: Architaenioglossa) from Ecuador with description of a new Adelopoma Doering, 1885
FIGURE 5. Relief map of Ecuador with the localities (black dots) of Adelopoma gracile Greķe, sp. nov. (prepared with Arc View 9.0) [scale 1:3 000 000].
FIGURE 3 in First record of the family Diplommatinidae Gray, 1847 (Gastropoda: Architaenioglossa) from Ecuador with description of a new Adelopoma Doering, 1885
FIGURE 3. Adelopoma gracile Greķe, sp. nov. paratype shells, micrographs. A. Specimen (LDM Z 5/6401) from ~1–2 km NE Rio Negro, apertural view. B–C. Specimen (LDM Z 5/6407) from ~2.5 km SSW Rio Verde, apertural (B) and lateral (C) view.
FIGURE 2 in First record of the family Diplommatinidae Gray, 1847 (Gastropoda: Architaenioglossa) from Ecuador with description of a new Adelopoma Doering, 1885
FIGURE 2. Adelopoma gracile Greķe, sp. nov. additional specimen (not type) from ~1–2 km NE Rio Negro, columella. The arrow indicates basal columellar lamella.
FIGURE 4 in First record of the family Diplommatinidae Gray, 1847 (Gastropoda: Architaenioglossa) from Ecuador with description of a new Adelopoma Doering, 1885
FIGURE 4. Adelopoma gracile Greķe, sp. nov. paratype (LDM Z 5/6407) from ~2.5 km SSW Rio Verde, micrographs. A. Protoconch, apertural view. B. Sculpture of ultimate whorl above aperture, apertural view. C. Sculpture on penultimate whorl, lateral view. D. Sculpture of ultimate whorl above aperture, apertural view. E. Peristome, lateral view. F. Columellaris.
FIGURE 2 in A new species of Diplommatina Benson, 1849 (Gastropoda, Caenogastropoda: Cyclophoroidea: Diplommatinidae) from the Wollaston Expedition to New Guinea
FIGURE 2. The type locality of Diplommatina amungme sp. nov. A. Map of southeast Asia from Google Map (©Google Map, 2023) through QGIS® 3.32 Lime, insert corresponds to B. B. Map of Papua New Guinea from SimpleMappr (www.simplemappr.net). C. Route map of the Wollaston Expedition from Wollaston (1914).
FIGURE 1 in A new species of Diplommatina Benson, 1849 (Gastropoda, Caenogastropoda: Cyclophoroidea: Diplommatinidae) from the Wollaston Expedition to New Guinea
FIGURE 1. Diplommatina amungme sp. nov., holotype. A. shell, B. internal structure observed through the translucent shell, green dotted line: constriction, white dotted line: columellaris.
Figure 2 in Notes on the hypselostomatid snails (Gastropoda: Heterobranchia) from limestone hills in Western Cambodia with a new record and a new species
Figure 2. Hypselostoma srakeoensis. (a) Paratype CUMZ Ver44038 with apertural dentition. (b, c) specimen CUMZ 14202 from Serei Saophoan, Banteay Meanchey, (b) shell and apertural dentition, and (c) protoconch sculpture. Abbreviations: c = columellar lamella, lpl = lower palatal lamella, p = parietal lamella, upl = upper palatal lamella.
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Allen Brain Atlas
Allen Brain Atlas is an Allen Institute collection of brain map atlases, datasets, APIs, and analysis tools covering mouse, human, and non-human primate brain resources.
Annotated Behaviour and Observability Dataset (ABODe)
ABODe is a University of Edinburgh DataShare dataset for behavior classification in group-housed mice using home-cage video, identities, bounding boxes, ground-plate positions, and annotator labels.
DANDI Archive for NWB datasets
DANDI is a BRAIN Initiative archive for publishing and sharing neurophysiology data, including electrophysiology, optophysiology, and behavioral data packaged as NWB and related standards.
International Brain Laboratory public data
The International Brain Laboratory public data releases expose standardized mouse decision-making experiments, including Neuropixels recordings, widefield calcium imaging, behavior, and session metadata accessed through the ONE API.
OpenNeuro
OpenNeuro is a free, open platform for sharing neuroimaging datasets, with public search, dataset pages, and download paths for web, S3, DataLad, and the OpenNeuro CLI.