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66 results for “Lymnaeidae”
Fig. 3a-j in Physico-chemical characteristics of habitats colonized by the pond snail Radix labiata (Gastropoda, Basommatophora, Lymnaeidae): a model approach
Fig. 3a-j: Graphical presentation of essential parameters associated with logistic regression: white vertical line: position of the maximum probability of occurrence (xmax), black bar: optimum range of the given variable, grey-shaded area: range of the given variable that is still tolerated by the species; a) water temperature, b) pH, c) electric conductivity, d) oxygen content in the water, e) nitrate concentration in the water, f) water depth, g) biological oxygen demand within five days, h) content of ammonium nitrogen, i) geographic altitude, j) current velocity.
Fig. 1 in Physico-chemical characteristics of habitats colonized by the pond snail Radix labiata (Gastropoda, Basommatophora, Lymnaeidae): a model approach
Fig. 1: General habitus of the shell of R. labiata as well as the living animal: a) Front view of the shell (height: 1.4 cm, width: 0.75 cm), b) back view of the shell, c) living animal with its typical triangular tentacles.
Fig. 2a-j in Physico-chemical characteristics of habitats colonized by the pond snail Radix labiata (Gastropoda, Basommatophora, Lymnaeidae): a model approach
Fig. 2a-j: Results of the logistic regression procedure carried out for ten environmental variables: a) water temperature, b) pH, c) electric conductivity, d) oxygen content in the water, e) nitrate concentration in the water, f) water depth, g) biological oxygen demand within five days, h) content of ammonium nitrogen, i) geographic altitude, j) current velocity.
Fig. 3 in Radix Rufescens (J. E. Gray, 1822) (Gastropoda: Lymnaeidae), A New Species For Oman And Arabian Peninsula
Fig. 3. Reproductive organs of Radix rufescens: A = ventrally, B–C = praeputium and phallotheca (ag – albuminoid gland, cp – corpus pyriformis, hg – haermaphrodite gland, ng – nidamental gland, ph – phallotheca (penis sheath), pr – prostate, prae – praeputium, ut – uterus, v – vagina, vd – vas deferens). Scale bar: 1 mm
Fig. 4 in Radix Rufescens (J. E. Gray, 1822) (Gastropoda: Lymnaeidae), A New Species For Oman And Arabian Peninsula
Fig. 4. Maximum likelihood tree computed for COI; bootstrap supports/Bayesian probabilities and GB numbers are given
FIG. 5 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 5. Maximum likelihood phylogeny of Ladislavella species based on the COI barcode sequence dataset. The red color indicates our sequence from Penza City. Black numbers near nodes are bootstrap support values. Scale bar indicates the branch length. РИС. 5. Молекулярная филогения с испольЗованием метода максимального правдоподобия на основе нуклеотидных последовательностей фрагмента митохондриального гена COI. Красным цветом обоЗначен наш сиквенс для обраЗца иЗ ПенЗы. Черные числа в уЗлах – Значения индексов бутстреп-поддерЖки. Масштабная линейка укаЗывает длину ветвей.
FIG. 1 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 1. View of the studied biotope in different seasons of the year. Photos taken on 15.04.2022 (A), 05.06.2022 (B), 20.07.2022 (C). РИС. 1. Вид исследованного биотопа в раЗные сеЗоны года. Фотографии сделаны 15.04.2022 (А), 05.06.2022 (В), 20.07.2022 (С).
FIG. 7 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 7. Some stages of embryonic development of Ladislavella cf. terebra. in the lab culture. The successive photo images were made on: 06.05.2022 (A), 14.05.2022 (B, C), 17.05.2022 (D). Scale bars: 0.2 mm (C), 0.25 mm (D). РИС. 7. Некоторые стадии Эмбрионального раЗвития Ladislavella cf. terebra в лабораторной культуре. Фото были сделаны: 06.05.2022 (A), 14.05.2022 (B, C), 17.05.2022 (D). Масштабная линейка: 0.2 мм (C), 0.25 мм (D).
FIG. 6 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 6. The ciliate Epistylis sp. on surface of the shell of Ladislavella cf. terebra. РИС. 6. Колонии инфуЗорий Epistylis sp. на поверхности раковины прудовика Ladislavella cf. terebra.
FIG. 2 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 2. Shell variability in Ladislavella cf. terebra from Penza City. Shells collected in August 2022. Scale bar: 10 mm. РИС. 2. ИЗменчивость раковины Ladislavella cf. terebra иЗ ПенЗы. Раковины собраны в августе 2022 г. Масштабная линейка: 10 мм.
FIG. 3 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 3. The copulatory apparatus of Ladislavella cf. terebra from Penza City (A) and from Siberia, Tyumen Region, Labytnangi Town (B). Scale bar: 5 mm. A – original photo; B – photo by Dmitry Palatov. РИС. 3. Копулятивный аппарат Ladislavella cf. terebra иЗ ПенЗы (A) и Сибири, Тюменская обл., г. Лабытнанги (B). Масштабная линейка: 5 mm. A – ориг.; B – фото Дмитрия Палатова.
FIG. 4 in The first molecular confirmation of the presence of the genus Ladislavella (Gastropoda: Lymnaeidae) in the European part of Russia
FIG. 4. Abnormally large individual of Ladislavella cf. terebra with trematode parthenitae in the hepatopancreas and mantle cavity. A. Shell. B. The copulatory apparatus. C. Soft body. Scale bars: 2 mm (B, C), 5 mm (A). РИС. 4. Аномально крупная особь Ladislavella cf. terebra с партенитами трематод в гепатопанкреасе и мантийной полости. A. Раковина. B. Копулятивный аппарат. C. Мягкое тело. Масштабная линейка: 2 мм (В, C), 5 мм (А).
Four videos showing surface-crawling locomotion and pedal surface collection in Lymnaea stagnalis (Lymnaeidae, Gastropoda)
<p> </p> <p>Many freshwater and marine gastropods can glide along the water surface with the sole of the foot facing upward. The force driving this surface-crawling locomotion is generated by the epithelial cilia on the sole, which push a ribbon of mucus produced on the anterior sole backwards into the water. If cilia on the posterior part of the sole stop beating, mucus accumulates on the posterior sole together with particles from the water surface. This so-called pedal surface collection enables gastropods to harvest edible materials from the surface. To perform pedal surface collection, the animals may either float or attach themselves with the posterior tip of the foot to solid substrates such as aquatic plants or aquarium walls.</p> <p>The four videos presented here show surface-crawling locomotion and pedal surface collection in the great pond snail, <em>Lymnaea stagnalis</em> (L., 1758), a common holarctic species. The animals came from a pond in a forest near Frankfurt am Main, west central Germany. Shell lengths of the snails shown range from 31 to 37 mm. Videos were captured with various inexpensive digital cameras without special equipment for illumination etc. Video material was processed with ImageJ (https://imagej.nih.gov/ij/) and QuickTimePro (https://support.apple.com/downloads/quicktime).</p> <p> </p> <p><strong>LYMNAEA-1 surface-crawling locomotion 1:</strong> <em>Lymnaea stagnalis</em> crawls onto the water surface from the wall of the tank it is kept in, glides along the surface, and returns to the tank wall. The animal can be seen breathing, and particles move at constant velocity along the entire sole of the crawling snail. The earliest description of this behavior I know of is found in LISTER (1694: p. 8).</p> <p> </p> <p><strong>LYMNAEA-2 pedal surface collection 1:</strong> (A) <em>Lymnaea stagnalis</em> crawls along the water surface. (B) The floating animal collects mucus and particles from the surface on its posterior sole and (C) eats the accumulated material. This is the behavior BROCKMEIER (1898) called 'Planktonfischen' (plankton fishing).</p> <p> </p> <p><strong>LYMNAEA-3 pedal surface collection 2:</strong> <em>Lymnaea stagnalis</em> attached to plants conducts pedal surface collection. Similar behavior was mentioned by KAISER (1960).</p> <p> </p> <p><strong>LYMNAEA-4 pedal surface collection 3:</strong> <em>Lymnaea stagnalis</em> conducts pedal surface collection in an upright position, being attached to a vertical solid substrate (a flower pot, in this case). Pedal surface collection in this posture has been studied previously in members of the families Ampullariidae (JOHNSON 1952) and Planorbidae (DELIAGINA & ORLOVSKY 1990).</p> <p> </p>
Figure 2 in The Stagnicola spp. of the Republic of Macedonia with the first record of Stagnicola fuscus (C. Pfeiffer, 1821) (Mollusca: Gastropoda: Lymnaeidae)
Figure 2. Marsh Ezerca in the upper part of Lakavichka Reka River, Jablanica Mt. Photo: Lj. Melovski.
Figure 1 in The Stagnicola spp. of the Republic of Macedonia with the first record of Stagnicola fuscus (C. Pfeiffer, 1821) (Mollusca: Gastropoda: Lymnaeidae)
Figure 1.The Stagnicola spp. of the Republic of Macedonia. A: S. montenegrinus, B: S. corvus, C: S. fuscus. Abbreviations: bc: bursa copulatrix, bd: bursa duct, pht: phallotheca, prp: praeputium, v: vagina, vd: vas deferens.
Figure 1 in New data on pond snails (Mollusca: Gastropoda: Lymnaeidae) inhabiting the Ukrainian Transcarpathian: diversity, distribution and ecology
Figure 1. Map showing the localities of samples studied. Details for each sampling point are given in Table 1.
Figures. 2-8. 2 in New additions to the freshwater gastropod fauna (Gastropoda: Hydrobiidae, Lymnaeidae) of Morocco
Figures. 2-8. 2: Shell of Pseudamnicola luteola, 3: penis in situ of P. luteola, 4: shell of Mercuria gauthieri, 5: penis in situ of M. gauthieri, 6: shell of Ecrobia vitrea, 7: shell of Radix labiata, 8: female and male copulatory organ. Abbreviations: bc: bursa copulatrix, bd: bursa duct, e: eye, m: muscle, p: penis, pht: phallotheca, pl: penial lap, prp: preputium, vd: vas deferens, t: tentacle, v: vagina.
Figures. 9-12. 9 in New additions to the freshwater gastropod fauna (Gastropoda: Hydrobiidae, Lymnaeidae) of Morocco
Figures. 9-12. 9: Habitat of Pseudamnicola luteola at Jbel Sidi Moussa, 10: habitat of Mercuria gauthieri at La'azib, 11: habitat of Ecrobia vitrea at Saidia wetland, 12: Habitat of Radix labiata at Ras El Ma.
Figure 2 in First molecularly substantiated records of the pond snail Ampullaceana fontinalis in the Siverskyi Donets River Basin, Ukraine (Gastropoda: Lymnaeidae)
Figure 2. Voucher of PS43 specimen, Ampullaceana fontinalis, from the Borova River, Luhansk region, Ukraine.
Figure 3 in First molecularly substantiated records of the pond snail Ampullaceana fontinalis in the Siverskyi Donets River Basin, Ukraine (Gastropoda: Lymnaeidae)
Figure 3. Phylogenetic relationships within the genus Ampullaceana obtained using the maximum likelihood optimality criterion based on COI sequences (Log-likelihood of the tree = -4245.7847). Values of both the SH-like approximate likelihood-ratio test (SH-aLRT) and ultrafast bootstrapping are shown for branches.
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Allen Brain Atlas
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Annotated Behaviour and Observability Dataset (ABODe)
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DANDI Archive for NWB datasets
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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.