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81 results for “Fluke”
Figure 7 from: Montoya AL, Wolff M (2020) Description of five new large species of Argentinomyia Lynch-Arribálzaga, and redescription of Talahua fervida (Fluke) (Diptera, Syrphidae, Syrphinae). . https://doi.org/10.3897/zookeys.929.37666
Figure 7 Argentinomyia puntarena sp. nov., male genitalia: A whole genitalia including epandrium, cercus, and surstylus, lateral view B epandrium, dorsal view C hypandrium, ventral view. Scale bar: 0.05 mm.
Figure 6 from: Montoya AL, Wolff M (2020) Description of five new large species of Argentinomyia Lynch-Arribálzaga, and redescription of Talahua fervida (Fluke) (Diptera, Syrphidae, Syrphinae). . https://doi.org/10.3897/zookeys.929.37666
Figure 6 Argentinomyia puntarena sp. nov., male (InBio CRI000311623): A head, frontal, male B dorsal view C lateral view. Female (InBio CRI002427774): D head, frontal view E dorsal view F lateral view. Scale bars: 5 mm.
Figure 4 from: Montoya AL, Wolff M (2020) Description of five new large species of Argentinomyia Lynch-Arribálzaga, and redescription of Talahua fervida (Fluke) (Diptera, Syrphidae, Syrphinae). . https://doi.org/10.3897/zookeys.929.37666
Figure 4 Argentinomyia huitepecensis sp. nov., male (ECOSCE 4925): A head, frontal, male B dorsal view C lateral view. Female (ECOSCE 24472): D head, frontal view E dorsal view F lateral view. Scale bars: 5 mm.
Figure 5 from: Montoya AL, Wolff M (2020) Description of five new large species of Argentinomyia Lynch-Arribálzaga, and redescription of Talahua fervida (Fluke) (Diptera, Syrphidae, Syrphinae). . https://doi.org/10.3897/zookeys.929.37666
Figure 5 Argentinomyia huitepecensis sp. nov., male genitalia: A whole genitalia including epandrium, cercus, and surstylus, lateral view B epandrium, dorsal view C hypandrium, ventral view. Scale bar: 0.05 mm.
Figure 1 from: Montoya AL, Wolff M (2020) Description of five new large species of Argentinomyia Lynch-Arribálzaga, and redescription of Talahua fervida (Fluke) (Diptera, Syrphidae, Syrphinae). . https://doi.org/10.3897/zookeys.929.37666
Figure 1 Argentinomyia andina sp. nov., male (CEUA 103551): A head, frontal, male B dorsal view C lateral view. Female (CEAU 69016): D head, frontal view E dorsal view F lateral view. Scale bars: 5 mm.
Figure 15 from: Montoya AL, Wolff M (2020) Description of five new large species of Argentinomyia Lynch-Arribálzaga, and redescription of Talahua fervida (Fluke) (Diptera, Syrphidae, Syrphinae). . https://doi.org/10.3897/zookeys.929.37666
Figure 15 Biogeographical distribution of Argentinomyia andina sp. nov. (yellow), A. quimbaya sp. nov. (blue) and A. choachi sp. nov. (red).
Supplementary material 1 from: Montoya AL, Wolff M (2020) Description of five new large species of Argentinomyia Lynch-Arribálzaga, and redescription of Talahua fervida (Fluke) (Diptera, Syrphidae, Syrphinae). . https://doi.org/10.3897/zookeys.929.37666
Table S1
Figure 3 from: Montoya AL, Wolff M (2020) Description of five new large species of Argentinomyia Lynch-Arribálzaga, and redescription of Talahua fervida (Fluke) (Diptera, Syrphidae, Syrphinae). . https://doi.org/10.3897/zookeys.929.37666
Figure 3 Argentinomyia choachi sp. nov., female (UNAB 5156): A head, frontal, female B posterior view C dorsal view D lateral view. Scale bars: 5 mm.
Data from: Interactions among bacterial strains and fluke genotypes shape virulence of co-infection
Most studies of virulence of infection focus on pairwise host-parasite interactions. However, hosts are almost universally co-infected by several parasite strains and/or genotypes of the same or different species. While theory predicts that co infection favours more virulent parasite genotypes through intensified competition for host resources, knowledge of effects of genotype by genotype (G×G) interactions between unrelated parasite species on virulence of co infection is limited. Here we tested such relationship by challenging rainbow trout with replicated bacterial strains and fluke genotypes both singly and in all possible pairwise combinations. We found that virulence (host mortality) was higher in co infections compared to single-infections. Importantly, we also found that the overall virulence was dependent on the genetic identity of the co-infecting partners so that the outcome of co infection could not be predicted from the respective virulence of single infections. Our results imply that G×G interactions among co infecting parasites may significantly affect host health, add to variance in parasite fitness and thus influence evolutionary dynamics and ecology of disease in unexpected ways.
Data from: Sequential infection can decrease virulence in a fish-bacterium-fluke interaction: implications for aquaculture disease management
Hosts are typically infected with multiple strains or genotypes of one or several parasite species. These infections can take place simultaneously, but also at different times, i.e. sequentially, when one of the parasites establishes first. Sequential parasite dynamics are common in nature, but also in intensive farming units such as aquaculture. However, knowledge of effects of previous exposures on virulence of current infections in intensive farming is very limited. This is critical as consecutive epidemics and infection history of a host could underlie failures in management practises and medical intervention of diseases. Here, we explored effects of timing of multiple infection on virulence in two common aquaculture parasites, the bacterium Flavobacterium columnare and the fluke Diplostomum pseudospathaceum. We exposed fish hosts first to flukes and then to bacteria in two separate experiments, altering timing between the infections from few hours to several weeks. We found that both short-term and long-term difference in timing of the two infections resulted in significant, genotype-specific decrease in bacterial virulence. Second, we developed a mathematical model, parameterized from our experimental results, to predict the implications of sequential infections for epidemiological progression of the disease, and levels of fish population suppression, in an aquaculture setting. Predictions of the model showed that sequential exposure of hosts can decrease the population-level impact of the bacterial epidemic, primarily through the increased recovery rate of sequentially infected hosts, thereby substantially protecting the population from the detrimental impact of infection. However, these effects depended on bacterial strain – fluke genotype combinations, suggesting the genetic composition of the parasite populations can greatly influence the degree of host suppression. Overall, these results suggest that host infection history can have significant consequences for the impact of infection at host population level, potentially shaping parasite epidemiology, disease dynamics and evolution of virulence in farming environments.
Data from: Morphology of the core fibrous layer of the cetacean tail fluke
The cetacean tail fluke blades are not supported by any vertebral elements. Instead, the majority of the blades are composed of a densely packed collagenous fiber matrix known as the core layer. Fluke blades from six species of odontocete cetaceans were examined to compare the morphology and orientation of fibers at different locations along the spanwise and chordwise fluke blade axes. The general fiber morphology was consistent with a three‐dimensional structure comprised of two‐dimensional sheets of fibers aligned tightly in a laminated configuration along the spanwise axis. The laminated configuration of the fluke blades helps to maintain spanwise rigidity while allowing partial flexibility during swimming. When viewing the chordwise sectional face at the leading edge and mid‐chord regions, fibers displayed a crossing pattern. This configuration relates to bending and structural support of the fluke blade. The trailing edge core was found to have parallel fibers arranged more dorso‐ventrally. The fiber morphology of the fluke blades was dorso‐ventrally symmetrical and similar in all species except the pygmy sperm whale (Kogia breviceps), which was found to have additional core layer fiber bundles running along the span of the fluke blade. These additional fibers may increase stiffness of the structure by resisting tension along their long spanwise axis.
Figure 6 in Philophthalmus hechingeri n. sp. (Digenea: Philophthalmidae), a Human-Infecting Eye Fluke from the Asian Mud Snail, Batillaria attramentaria
Figure 6. The flask-shaped metacercariae of Philophthalmus hechingeri n. sp.
Figure 1 in A new order of fishes as hosts of blood flukes (Aporocotylidae); description of a new genus and three new species infecting squirrelfishes (Holocentriformes, Holocentridae) on the Great Barrier Reef
Figure 1. Phylogram from the unrooted Neighbour-joining analysis of the cox1 mtDNA dataset. Bootstrap support values are shown at the nodes, with values of <85 not shown. The scale-bar indicates the number of base differences.
Figs. 1–4. Electrovermis zappum Warren and Bullard n. gen., n in First elucidation of a blood fluke (Electrovermis zappum n. gen., n. sp.) life cycle including a chondrichthyan or bivalve
Figs. 1–4. Electrovermis zappum Warren and Bullard n. gen., n. sp. (Digenea: Aporocotylidae) infecting the heart of the lesser electric ray, Narcine bancroftii (Griffith and Smith, 1834) Carvalho, 2001 (Torpediniformes: Narcinidae) (1) Body of shistosomulum (voucher, USNM No. 1578577), ventral view. (2) Body of shistosomulum (larger) Voucher (USNM No. 1578576), ventral view. (3) Body of adult (holotype, USNM No. 1578574), ventral view. (4) Genitalia of holotype, ventral view. Oesophagus (es), oesophageal gland (eg), caecal bifurcation (cb), mouth (mo), vitellarium (vit), testis (t), ovary (o), vas deferens (vd), seminal vesicle (sv), common genital pore (cgp), uterus (u), and cirrus (c), uterine seminal receptacle (usr), and uterine constriction (uc).
Fig. 23 in First elucidation of a blood fluke (Electrovermis zappum n. gen., n. sp.) life cycle including a chondrichthyan or bivalve
Fig. 23. Phylogenetic relationships of chondrichthyan blood flukes and innominate cercariae reconstructed using Bayesian inference with the large subunit ribosomal DNA (28S) gene. Numbers aside tree nodes indicate posterior probability. Scale bar is in substitutions per site.
Data from: Morphology of the core fibrous layer of the cetacean tail fluke
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Data from: Sequential infection can decrease virulence in a fish-bacterium-fluke interaction: implications for aquaculture disease management
Open the record for dataset details and reuse information.
Data from: Interactions among bacterial strains and fluke genotypes shape virulence of co-infection
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MicroRNAs are involved in the regulation of ovary development in the pathogenic blood fluke Schistosoma japonicum
GEO Series GSE74654. Schistosoma japonicum. 8 samples. Type: Non-coding RNA profiling by high throughput sequencing.
Figure 17 from: Montoya AL, Wolff M (2020) Description of five new large species of Argentinomyia Lynch-Arribálzaga, and redescription of Talahua fervida (Fluke) (Diptera, Syrphidae, Syrphinae). . https://doi.org/10.3897/zookeys.929.37666
Figure 17 Biogeographical distribution of Talahua fervida (light blue).
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