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17 results for “Microphallus”
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. 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.
Data from: De novo transcriptome characterization of a sterilizing trematode parasite (Microphallus sp.) from two species of New Zealand snails
Snail-borne trematodes represent a large, diverse, and evolutionarily, ecologically, and medically important group of parasites, often imposing strong selection on their hosts and causing host morbidity and mortality. Even so, there are very few genomic and transcriptomic resources available for this important animal group. We help to fill this gap by providing transcriptome resources from trematode metacercariae infecting two congeneric snail species, Potamopyrgus antipodarum and P. estuarinus. This genus of New Zealand snails has gained prominence in large part through the development of P. antipodarum and its sterilizing trematode parasite Microphallus livelyi into a textbook model for host-parasite coevolutionary interactions in nature. By contrast, the interactions between Microphallus trematodes and P. estuarinus, an estuary-inhabiting species closely related to the freshwater P. antipodarum, are relatively unstudied. Here, we provide the first annotated transcriptome assemblies from Microphallus isolated from P. antipodarum and P. estuarinus. We also use these transcriptomes to produce genomic resources that will be broadly useful to those interested in host-parasite coevolution, local adaption, and molecular evolution and phylogenetics of this and other snail-trematode systems. Analyses of the two Microphallus transcriptomes revealed that the two trematode types are more genetically differentiated from one another than are M. livelyi infecting different populations of P. antipodarum, suggesting that the Microphallus infecting P. estuarinus represent a distinct lineage. We also provide a promising set of candidate genes likely involved in parasitic infection and response to salinity stress.
Fig. 2 in Genetic and morphological variation of metacercariae of Microphallus piriformes (Trematoda, Microphallidae): Effects of paraxenia and geographic location
Fig. 2. Scheme of landmarks and semilandmarks on the metacercarial body.
Data from: De novo transcriptome characterization of a sterilizing trematode parasite (Microphallus sp.) from two species of New Zealand snails
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FIGURES 21–26. Tectocyphon microphallus, n. gen., n in Australian Marsh Beetles (Coleoptera: Scirtidae). 8. The new genera Cygnocyphon, Eximiocyphon, Paracyphon, Leptocyphon, Tectocyphon, and additions to Contacyphon de Gozis, Nanocyphon Zwick and Eurycyphon Watts
FIGURES 21–26. Tectocyphon microphallus, n. gen., n. sp., male. 21–23, habitus; 24, head, ventral, labium and maxilla removed; 25, labium; 26, maxilla. 25, 26 to the same, 21–23 not to scale. ep, epipleura; es, episternum; gs, gular suture; sg, subgenal ridge.
Fig. 6. A in Genetic and morphological variation of metacercariae of Microphallus piriformes (Trematoda, Microphallidae): Effects of paraxenia and geographic location
Fig. 6. A: PCA-ordination of individual M. piriformes metacercariae body shapes. Ellipses show 95%-confidence intervals for the five groups in comparison. B: Mean body shapes of M. piriformes according to sampling site and host species. Transformation grids reflect deviation from the overall mean body shape.
Figure 6 from: Violante-González J, Monks S, Quiterio-Rendon G, García-Ibáñez S, Larumbe-Morán E, Rojas-Herrera AA (2016) Life on the beach for a sand crab (Emerita rathbunae) (Decapoda, Hippidae): parasite-induced mortality of females in populations of the Pacific sand crab caused by Microphallus nicolli (Microphallidae). Zoosystematics and Evolution 92(2): 153-161. https://doi.org/10.3897/zse.92.8256
Figure 6 - Relationship between mean abundance of cysts (log x + 1) of Microphallus nicolli and size-classes of females of Emerita rathbunae based on cephalothorax length. Data are for all four localities: San Andrés (A), Revolcadero (B), Las Trancas (C), and Ixtapa (D).
Figure 5 from: Violante-González J, Monks S, Quiterio-Rendon G, García-Ibáñez S, Larumbe-Morán E, Rojas-Herrera AA (2016) Life on the beach for a sand crab (Emerita rathbunae) (Decapoda, Hippidae): parasite-induced mortality of females in populations of the Pacific sand crab caused by Microphallus nicolli (Microphallidae). Zoosystematics and Evolution 92(2): 153-161. https://doi.org/10.3897/zse.92.8256
Figure 5 - Relationship between mean abundance of cysts of Microphallus nicolli calculated from volumetric measurements and the cephalothorax length of females of Emerita rathbunae. Data are from only San Andrés (A) and Las Trancas beaches (B).
Figures 4 from: Violante-González J, Monks S, Quiterio-Rendon G, García-Ibáñez S, Larumbe-Morán E, Rojas-Herrera AA (2016) Life on the beach for a sand crab (Emerita rathbunae) (Decapoda, Hippidae): parasite-induced mortality of females in populations of the Pacific sand crab caused by Microphallus nicolli (Microphallidae). Zoosystematics and Evolution 92(2): 153-161. https://doi.org/10.3897/zse.92.8256
Figures 4 - Percentages of cysts of Microphallus nicolli by development stage of cysts and size-classes of female crabs (Emerita rathbunae). Hatched bars = immature cysts; Shaded bars = late immature cysts; Open bars = mature cysts; Dark bars = melanized cysts. Data are only from San Andrés (A) and Las Trancas beaches (B). Stages of cyst maturity were modified from Keeney et al. (2007).
Figure 1 from: Violante-González J, Monks S, Quiterio-Rendon G, García-Ibáñez S, Larumbe-Morán E, Rojas-Herrera AA (2016) Life on the beach for a sand crab (Emerita rathbunae) (Decapoda, Hippidae): parasite-induced mortality of females in populations of the Pacific sand crab caused by Microphallus nicolli (Microphallidae). Zoosystematics and Evolution 92(2): 153-161. https://doi.org/10.3897/zse.92.8256
Figure 1 - Helminth parasites of Emerita rathbunae. A Microphallus nicolli; B Everted proboscis of an excysted specimen of Profilicollis sp.; C Cestode larva; D Proleptus sp., inset (*) = anterior end of worm. Scale bars: A = 500 µm; B = 200 µm; C = 100 µm; D = 100 µm.
Figure 2 from: Violante-González J, Monks S, Quiterio-Rendon G, García-Ibáñez S, Larumbe-Morán E, Rojas-Herrera AA (2016) Life on the beach for a sand crab (Emerita rathbunae) (Decapoda, Hippidae): parasite-induced mortality of females in populations of the Pacific sand crab caused by Microphallus nicolli (Microphallidae). Zoosystematics and Evolution 92(2): 153-161. https://doi.org/10.3897/zse.92.8256
Figure 2 - Map indicating the four collection localities along the Pacific coast of Guerrero. 1. San Andres; 2. Revolcadero; 3. Las Trancas; 4. Ixtapa.
Figure 3 from: Violante-González J, Monks S, Quiterio-Rendon G, García-Ibáñez S, Larumbe-Morán E, Rojas-Herrera AA (2016) Life on the beach for a sand crab (Emerita rathbunae) (Decapoda, Hippidae): parasite-induced mortality of females in populations of the Pacific sand crab caused by Microphallus nicolli (Microphallidae). Zoosystematics and Evolution 92(2): 153-161. https://doi.org/10.3897/zse.92.8256
Figure 3 - Cyst of an older metacercaria of Microphallus nicolli. Scale bar: 100 µm.
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