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262 results for “trematode”
Original .tif files for "Land snails can trap trematode cercariae in their shell: encapsulation as a general response against parasites?"
<p>In our article "Land snails can trap trematode cercariae in their shell: encapsulation as a general response against parasites?", we use photographic evidence to demonstrate the ability of snails to trap trematodes in their shells. Here we archive the tif files that make up our Figure 1 for this paper, for browsing at higher resolutions than on the published article.</p> <p>Below a (slightly edited) copy of the figure legend:</p> <p>"Backlit views of metazoan parasites trapped in the shell of Cornu aspersum: trematode cercariae (Fig1A.tif, Fig1B.tif, Fig1C.tif), and nematode (Fig1D.tif). Small cracks of the inner shell layer (Fig1B.tif) can be seen above the cercariae and were considered as indicative of damage on the shell after it covered cercariae. Note the accumulation of dark adhering cells around or above the parasites in both cases of cercariae (Fig1C.tif) and nematode (Fig1D.tif)."</p>
Data from: Colony discrimination and competition in the eusocial trematode, Himasthla rhigedana
<p>The California horn snail (<em>Cerithideopsis californica</em>) hosts a diverse community of trematode parasite species, yet these species rarely co-occur in the same host. Some trematodes in this community competitively exclude conspecifics and heterospecifics using a soldier caste. How these trematodes can distinguish colonymates from competitors is unknown. Here we examine patterns of colony discrimination in <em>Himasthla rhigedana, </em>a marsh-dwelling species of parasitic trematode that possesses a soldier caste in their intermediate snail hosts<em>.</em> Aggression assays pairing colonies against multiple opponents demonstrate that <em>H. rhigedana</em> distinguish between conspecific colonies, consistently directing more attacks towards colonies collected from a distant marsh. We demonstrate that conspecific interactions between colonies are predominantly symmetrical (both colonies attack during encounters), and that the likelihood of aggression is the same whether the attacker soldier is "sterile" (soldier redia with no germinal balls) or an "intermediate" (soldier redia with developing germinal balls). Recognizing heterospecific or conspecific threats is a necessary function for the evolution of soldier castes, which almost exclusively occur within eusocial insects. By finding parallels in disparate phyla, our results in <em>H. rhigedana</em> provide a foundation for understanding the evolution of colony discrimination generally, as well as in trematode species and other parasite taxa with similar competitive interactions.</p>
Fig. 1 in Identification of freshwater snail species and survey of their trematode infections in Ordos, China
Fig. 1. Morphological characteristics of major freshwater snails in the Ordos area. a: Bellamya aeruginosa; b, c: Radix plicatula; d: Gyraulus convexiusculus; e, f: Galba pervia.
Fig. 5 in Renal trematode infection due to Paratanaisia bragai in zoo housed Columbiformes and a red bird-of-paradise (Paradisaea rubra)
Fig. 5. Allopeas clavulinum one of two subulinid snails possibly acting as intermediate host for the Paratanaisia bragai infection, found in one of the aviaries housing several of the cases.
Fig. 4 in Renal trematode infection due to Paratanaisia bragai in zoo housed Columbiformes and a red bird-of-paradise (Paradisaea rubra)
Fig. 4. Emerald dove case: Kidney with dilated collecting ducts and numerous cross section of trematodes (arrow) with minimal inflammation. HE.
Fig. 1 in Renal trematode infection due to Paratanaisia bragai in zoo housed Columbiformes and a red bird-of-paradise (Paradisaea rubra)
Fig. 1. Red bird-of-paradise case. (A) Renal flukes in collecting ducts (arrows) with minimal inflammatory changes. HE. (B) Necrosis and granulomatous nephritis surrounding trematode eggs (arrow). HE.
Fig. 3. Socorro dove case 2 in Renal trematode infection due to Paratanaisia bragai in zoo housed Columbiformes and a red bird-of-paradise (Paradisaea rubra)
Fig. 3. Socorro dove case 2. (A) Asymmetrically enlarged pale tan left and atrophic / cystic right kidney. Macroscopic view. (B) Kidney with focally extensive central necrosis surrounding fluke eggs (arrow) and surrounding granulomatous inflammatory reaction. HE. (C) Kidney with chronic granulomatous tubulointerstitial nephritis surrounding free trematode eggs. HE.
Fig. 2. Socorro dove case 1 in Renal trematode infection due to Paratanaisia bragai in zoo housed Columbiformes and a red bird-of-paradise (Paradisaea rubra)
Fig. 2. Socorro dove case 1. (A) Kidneys with cranial atrophy, haemorrhage and caudal polar gout deposition and also pericardial gout deposition. Macroscopic view. (B) Cystic dilation of collecting ducts, haemorrhage and granulomatous nephritis. HE.
Figs 1–2 in New Intestinal Trematodes From Siganid Fishes Off The Saudi Coast Of The Red Sea
Figs 1–2. Holotypes (whole-mount, ventral view): 1 = Hexangium saudii sp. n. from Siganus rivulatus, Red Sea. 2 = Progyliauchen magnacetabulum sp. n. from Siganus luridus, Red Sea. Scale bar= 500 μm.
Fig. 1. A in New Trematode Collyriclum Faba (Plagiochiida, Collyriclidae) Detected In The Birds Of Uzbekistan
Fig. 1. A mountain whitethroat (Sylvia althaea) with cysts infected with the trematode Collyriclum faba (Bremser in Schmalz, 1831). Surkhan State Reserve, Surkhandarya Province, south of Uzbekistan, June 2017 (photo by N. N. Azimov).
Fig. 2 in Circulation Pathways Of Trematodes Of Freshwater Gastropod Mollusks In Forest Biocenoses Of The Ukrainian Polissia
Fig. 2. Two-host life cycles of trematodes: а — alternation hosts; b — proportion of different classes of definitive hosts in life cycles.
Fig. 3 in Circulation Pathways Of Trematodes Of Freshwater Gastropod Mollusks In Forest Biocenoses Of The Ukrainian Polissia
Fig. 3. Three-host life cycle of trematodes: А — second intermediate hosts are aquatic invertebrates; В — second intermediate hosts are amphibiontic invertebrates; С — second intermediate hosts are vertebrates; а — alternation hosts; b — biological structure of helminth fauna.
Fig. 2 in Distribution Of Trematodes Cryptokotyle (Trematoda, Heterophyidae), In Fish Of The Family Gobiidae In The Estuary Waters And The Black Sea In Southern Ukraine
Fig. 2. Metacercariae of trematodes of Heterophyidae familyon the body surface and fins of N. fluviatialis.
Fig. 3 in Distribution Of Trematodes Cryptokotyle (Trematoda, Heterophyidae), In Fish Of The Family Gobiidae In The Estuary Waters And The Black Sea In Southern Ukraine
Fig. 3. Part of small intestines of duckling at autopsy. Visible trematodes C. jejunain mucus and on mucosal surfaces.
Fig. 2 in Submicroscopic Changes In The Hepatopancreas Of Freshwater Mollusks Infected With Parthenites Of Trematodes Echinoparyphium Aconiatum (Echinostomida) And Plagiorchis Elegans (Plagiorchiida)
Fig. 2. Changes in the cells of the L. stagnalis hepatopancreas acinus with a high degree of invasion with parthenitis: A: Walls of a hepatopancreas acinus of a mollusk infected with E. aconiatum: 1 — collagen fibers; 2 — hepatic cell; 3 — lime cells; 4 — karyorrhexis. (Electronogram ×1000); B: hepatic cells of the hepatopancreas of a mollusk infected with E. aconiatum: 1 — fragments of a destroyed hepatic cell. (Electronogram ×10000); C: Lime cells of the hepatopancreas of the mollusk infected with P. elegans: 1 — interlobular fibrous connective tissue; 2 — hepatic cell; 3 — lime cell. (Electronogram × 6500); D: Cells of the hepatopancreas acinus of the mollusk infected with P. elegans: 1 — hepatic cell; 2 — lime cell. (Electronogram ×15000).
Fig. 1 in Submicroscopic Changes In The Hepatopancreas Of Freshwater Mollusks Infected With Parthenites Of Trematodes Echinoparyphium Aconiatum (Echinostomida) And Plagiorchis Elegans (Plagiorchiida)
Fig. 1. Acinus of L. stagnalis hepatopancreas: A: Cells of L. stagnalis hepatopancreas acinus: 1 — hepatic cell; 2 — lime cell. (Electronogram ×4800); B: Hepatic and lime cells of a L. stagnalis hepatopancreas fragment undamaged by trematode parthenitis: 1 — hepatic cell; 2 — nucleus; 3 — heterochromatin; 4 — pore in the nuclear envelope; 5 — perinuclear space; 6 — the lumen of the acinus; 7 — lime cell; 8 — the nucleus of the lime cell. (Electronogram ×13000).
Fig. 4 in The Role Of Different Mollusk Species In Maintaining The Transmission Of Polyhostal Trematode Species In Ukrainian Polissya Waters: The Specificity Of Trematode Parthenogenetic Generations To Mollusk Hosts
Fig. 4. The distribution of olygoxenic three-host trematode species in the parthenitae host species of mollusks: A — E. stantschinskii; B — P. ovata; C — C. cornutus; D — T. clavata.
Fig. 3 in The Role Of Different Mollusk Species In Maintaining The Transmission Of Polyhostal Trematode Species In Ukrainian Polissya Waters: The Specificity Of Trematode Parthenogenetic Generations To Mollusk Hosts
Fig. 3. The distribution of polyxenic trematode species in the parthenitae host species of mollusks: A — H. conoideum; B — E. recurvatum.
Fig. 6 in The Role Of Different Mollusk Species In Maintaining The Transmission Of Polyhostal Trematode Species In Ukrainian Polissya Waters: The Specificity Of Trematode Parthenogenetic Generations To Mollusk Hosts
Fig. 6. The distribution of olygoxenic two-host trematode species in the parthenitae host species of mollusks: A — P. ichikawai; B — D. subclavatus; C — F. hepatica; D — L. constantinovae; E — A. imitans.
Fig. 2 in The Role Of Different Mollusk Species In Maintaining The Transmission Of Polyhostal Trematode Species In Ukrainian Polissya Waters: The Specificity Of Trematode Parthenogenetic Generations To Mollusk Hosts
Fig. 2. The distribution of olygoxenic three-host trematode species in the parthenitae host species of mollusks: A — H. cylindracea; B — H. variegatus; C — E. aconiatum; D — E. revolutum.
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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)
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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.