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156 results for “Trematoda”
Fig. 6 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 6. Edge of one of the vesicles produced by the accumulation of parasites. Retinal pigment layer and rods and cones layer display a progressive alteration in their structure and finally both layers become detached. Notice the reduction of the thickness of the RPE (arrow) in the vesicle. Scale bar = 300 μm.
Fig. 12 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 12. PP-morphs. Diffuse changes in the posterior retina affecting mainly the RPE layer suggesting potential healing. Scale bar = 200 μm.
Fig. 4 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 4. Diplostomum sp. metacercaria within the retinal structures. This specimen is clearly placed between the retinal pigmented epithelium (RP) and rod and cones layer (RC) creating a small space between them and the parasite. Damaged retinal pigment epithelium is clearly observed and also rod and cone layer display morphological alterations. Scale bar = 200 μm.
Fig. 11. A in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 11. A single Diplostomum sp. metacercaria within the posterior retina with scarce development of surrounding vesicle and mechanical compression against the RPE and the cones and rods layers. Scale bar = 200 μm.
Fig. 7 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 7. Early lesions in RPE and RC in the retina closer to the edge of the vesicles. Cones and rods display a disorganized pattern between the pigmented processes of the RPE. Scale bar = 100 μm.
Fig. 2 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 2. Vesicle with several Diplostomum specimens in a histological section. Vesicles are typically located near the ciliary body/retina contact area. C: cornea. I: iris. H/E. Scale bar = 1 mm.
Fig. 5 in Histopathological characterisation of retinal lesions associated to Diplostomum species (Platyhelminthes: Trematoda) infection in polymorphic Arctic charr Salvelinus alpinus
Fig. 5. Large vesicle with sections of many Diplostomum specimens. The vesicle clearly creates a large space between RP and RC. Scale bar = 400 μm.
Figure 2 in First report of the genus Brachylaima Dujardin, 1843 (Trematoda: Brachylaimidae) from the small intestine of common myna (Acridotheres tristis) of district Swabi, Khyber Pakhtunkhwa, Pakistan
Figure 2. Photomicrographs of B. fuscatum (Rudolphi, 1819): a) Entire specimen. b) Fore body enlarged. c) Eggs.
Figure 4 in First report of the genus Brachylaima Dujardin, 1843 (Trematoda: Brachylaimidae) from the small intestine of common myna (Acridotheres tristis) of district Swabi, Khyber Pakhtunkhwa, Pakistan
Figure 4. Photomicrographs of B. sabahense Fischthal and Kuntz, 1974: a) Entire specimen. b) Fore body enlarged. c) Eggs.
Fig. 7 in Genetic and morphological variation of metacercariae of Microphallus piriformes (Trematoda, Microphallidae): Effects of paraxenia and geographic location
Fig. 7. Variability of metacercarial body shape within hemipopulations and infrapopulations of M. piriformes. A: Absolute and relative morphological disparity (MD) of metacercariae within hosts of the same species. B: Distribution of morphological disparity (MD) within individual snails grouped by host species and sampling location.
Fig. 4 in Genetic and morphological variation of metacercariae of Microphallus piriformes (Trematoda, Microphallidae): Effects of paraxenia and geographic location
Fig. 4. Haplotype networks, COI sequence (369 bp); TCS algorithm; dashes correspond to mutations. A: color reflects sampling location. B: color reflects host species.
Fig. 5 in Genetic and morphological variation of metacercariae of Microphallus piriformes (Trematoda, Microphallidae): Effects of paraxenia and geographic location
Fig. 5. PCA-ordination of individual M. piriformes metacercariae body shapes grouped by host species. PC1 can be interpreted as a deepness of a "waist" between locomotory and generative body parts; PC2 can be interpreted as a width of locomotory body part. B: Pairwise post-hoc comparison; significant value are shown as bold (considering Holmes correction for multiple comparison); host species: sax – L. saxatilis; obt – L. obtusata; sampling site: Kib - Barents Sea, Kiberg; Kor – White Sea, Korga-Islet; Zel – Barents Sea, Dalnie Zelentsy.
Fig. 1 in Genetic and morphological variation of metacercariae of Microphallus piriformes (Trematoda, Microphallidae): Effects of paraxenia and geographic location
Fig. 1. The map of the study region (image: TerraMetrics, map data: Google). Sample collection sites (Tromsø city, Kiberg settlement, Dalnie Zelentsy settlement, Sredny Island) are shown.
Fig. 8 in Genetic and morphological variation of metacercariae of Microphallus piriformes (Trematoda, Microphallidae): Effects of paraxenia and geographic location
Fig. 8. Body size of M. piriformes metacercariae from different host species and sampling locations. Mean centroid size and 95% confidence interval obtained via bootstrap.
Fig. 1 in Interspecific variation of prevalence by Scaphanocephalus (Platyhelminthes: Trematoda: Heterophyidae) metacercariae in parrotfishes (Labridae: Scarini) from an Okinawan coral reef
Fig. 1. Cyst of Scaphanocephalus parasite (arrows) infected on the pectoral fins and lateral body skin of parrotfish Chlorurus sordidus.
Fig. 3 in Genetic and morphological variation of metacercariae of Microphallus piriformes (Trematoda, Microphallidae): Effects of paraxenia and geographic location
Fig. 3. Bayesian inference based on COI sequence (369 bp); 15000000 generation; GTR + I + G substitution model; A posteriori probabilities are indicated by node shapes; sample name includes parasite species (pir – M. piriformes, pyg – M. pygmaeus, tri – M. triangulatus, sim – M. similis), sample number, geographic region and location (WSk – White Sea, Korga-Islet; WSy – White Sea, Yakovleva; DZe – Barents Sea, Dalnie Zelentsy; Kib - Barents Sea, Kiberg; Tro - Norwegian Sea, Tromsø), host species (sax – L. saxatilis; arc – L. arcana; comp – L. compressa; obt – L. obtusata; fab – L. fabalis). Identical haplotypes and the FST-value of differentiation between populations (Weir, and Cockerham, 1984) are shown in Supplementary Table 1. Branch color reflects geographic region.
Fig. 2 in Interspecific variation of prevalence by Scaphanocephalus (Platyhelminthes: Trematoda: Heterophyidae) metacercariae in parrotfishes (Labridae: Scarini) from an Okinawan coral reef
Fig. 2. Phylogenetic tree of genera in Scarini of Labridae (modified from Streelman et al., 2002) and parasite prevalence in each species. *: 100%.
Fig. 3 in Acute mortality in California tiger salamander (Ambystoma californiense) and Santa Cruz long-toed salamander (Ambystoma macrodactylum croceum) caused by Ribeiroia ondatrae (Class: Trematoda)
Fig. 3. Ribeiroia ondatrae cercaria from Planorbella sp. collected from Ellicott Pond in Ellicott Slough National Wildlife Refuge, Santa Cruz County, California, U.S.A.
Fig. 4 in Acute mortality in California tiger salamander (Ambystoma californiense) and Santa Cruz long-toed salamander (Ambystoma macrodactylum croceum) caused by Ribeiroia ondatrae (Class: Trematoda)
Fig. 4. Molecular phylogenetic analysis by Maximum Likelihood method based on the Hasegawa-Kishino-Yano plus G model with 500 bootstrap replications based on partial 28S rRNA gene sequences of Ribeiroia ondatrae metacercariae from California tiger salamanders (Ambystoma californiense), cercariae from Planorbella sp. and sequences of R. ondatrae publicly available in GenBank with Notocotylus attenuatus as an outgroup. Tree is drawn to scale with branch lengths measure in the number of substitutions per site. The analysis involved 13 nucleotide sequences. All positions with less than 95% site coverage were eliminated. There was a total of 1189 positions in the final dataset.
Fig. 2 in Acute mortality in California tiger salamander (Ambystoma californiense) and Santa Cruz long-toed salamander (Ambystoma macrodactylum croceum) caused by Ribeiroia ondatrae (Class: Trematoda)
Fig. 2. Photomicrograph of California tiger salamanders (Ambystoma californiense) in late-stage metamorphosis from a mortality event in the Ellicott Slough National Wildlife Refuge in Santa Cruz County, California, U.S.A. (A) Cross-section of dorsal tail showing widespread ulcerative dermatitis with superficial serocellular crust formation and intralesional metacercariae (asterisk) (H&E). (B) Metacercariae (asterisk) associated with mixed cellular to granulomatous inflammation widespread in the gills and subcutis (PAS). Inset: Encysted metacercariae are surrounded by mixed-cellular to granulomatous to infiltrate (H&E).
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International Brain Laboratory public data
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