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Fig. 1 in Acanthocephalans of the nominotypical subgenus of Plagiorhynchus (Plagiorhynchidae) from charadriiform birds in the collection of the Natural History Museum, London, with a key to the species of the subgenus

Fig. 1. Plagiorhynchus (Plagiorhynchus) crassicollis (Villot, 1875). A-D (material from Dorset): A. Male, general view. B. Male, anterior end of trunk. C. Male, longitudinal row of hooks (lateral view). D. Eggs. E-G (material from unknown locality, in Great Britain): E. Male, general view. F. Male, anterior end of trunk. G. Male, longitudinal row of hooks (lateral view). Scale-bars: A, E, 1.0 mm; B, F, 0.2 mm; C, D, G, 0.1 mm.

Fig. 1. Acanthocephalus minor Yamaguti, 1935 in Rediscovery of a Fish Acanthocephalan, Acanthocephalus minor (Echinorhynchida: Echinorhynchidae), in the Lake Biwa Basin, Central Japan, with a Review of the Fish Acanthocephalan Fauna of the Basin

Fig. 1. Acanthocephalus minor Yamaguti, 1935, NSMT–As 4293, from rectum of Odontobutis obscura (Temminck and Schlegel, 1845). A, Entire body of male; B, proboscis of female. Scale bars: A, 1 mm; B, 100 µm.

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Fig. 1. Acanthocephalus lucidus Van Cleave, 1925 in An Amphibian Acanthocephalan, Acanthocephalus lucidus (Echinorhynchida: Echinorhynchidae), Infecting a Fish, Salvelinus leucomaenis leucomaenis (Salmoniformes: Salmonidae)

Fig. 1. Acanthocephalus lucidus Van Cleave, 1925, male (NSMT–As 4040), from the intestine of Salvelinus leucomaenis leucomanis (Pallas, 1814). A, entire body; B, proboscis. Scale bars: A, 0.5 mm; B, 0.2 mm.

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Fig. 1 in New Records On Acanthocephalans From California Sea Lions Zalophus Californianus (Pinnipedia, Otariidae) From California, Usa

Fig. 1. Acanthocephalan species from California sea lions (Zalophus californianus): A — Corynosoma strumosum, total view of adult male; B — Corynosoma obtuscens, total view of female; C — Profilicollis altmani, total view of immature male; D — Andracantha phalacrocoracis, anterior part of female; E — Andrcantha sp., total view of immature female. Scale bars: A, B, C, E — 1 mm, D — 500 μm.

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Fig. 2 in New Records On Acanthocephalans From California Sea Lions Zalophus Californianus (Pinnipedia, Otariidae) From California, Usa

Fig. 2. Acanthocephalan species from California sea lions (Zalophus californianus): A — Andracantha sp., total view of immature male. Scale bar 1 mm; B — Andracantha sp., proboscis of female. Scale bar 500 μm; C — Andracantha sp., total view of immature female. Scale bar 1 mm; D — Andracantha phalacrocoracis, spines of ventral surface. Scale bar 1 mm; E — Corynosoma obtuscens, transitional hooks. Scale bar 50 μm; F — Corynosoma strumosum, transitional hooks. Scale bar 50 μm; G — Profilicollis altmani, longitudinal row of hooks. Scale bar 100 μm; H — Andracantha sp., posterior part of female. Scale bar 500 μm; J — Andracantha sp., longitudinal row of hooks. Scale bar 100 μm; K — Andracantha phalacrocoracis, longitudinal row of hooks. Scale bar 100 μm.

Fig. 5 in Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species

Fig. 5. Centrorhynchus polissiensis sp. n. from Buteo buteo: A — hooks of a longitudinal row, holotype, {; B — total view, holotype, {; C — proboscis, holotype, {; D — egg (original).

Fig. 4 in Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species

Fig. 4. Centrorhynchus spinosus from Falco tinnunculus: A — proboscis, {; B — hooks of a longitudinal row, {; C — egg; D — hooks of a longitudinal row, {.

Fig. 3 in Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species

Fig. 3. Centrorhynchus globocaudatus from Falco tinnunculus: A — proboscis, {; B — total view, {; C — egg; D — hooks of a longitudinal row, {; E — terminal part of female reproductive system.

Fig. 2 in Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species

Fig. 2. Centrorhynchus conspectus from Bubo bubo: A — proboscis, {; B — hooks of a longitudinal row, {; C — egg; D — terminal part of female reproductive system.

Fig. 1 in Acanthocephalans Of The Genus Centrorhynchus (Palaeacanthocephala, Centrorhynchydae) From Birds Of Ukraine With The Description Of A New Species

Fig. 1. Centrorhynchus aluconis from Strix aluco: A — total view, {; B — proboscis, {; C — hooks of a longitudinal row, {; D — egg; E — terminal part of female reproductive system.

Fig. 5 in Mitochondrial DNA diversity in the acanthocephalan Prosthenorchis elegans in Colombia based on cytochrome c oxidase I (COI) gene sequence

Fig. 5. Distribution and frequency of Prosthenorchis elegans haplotypes (A–F) and haplogroups (I–II) by locality and individual. URRAS: Unidad de Rescate y Rehabilitacíon de Animales Silvestres, Universidad Nacional de Colombia; AMVA: Area Metropolitana del Valle de Aburŕa; WCS: Wildlife Conservation Society-Colombia.

Fig. 4 in Mitochondrial DNA diversity in the acanthocephalan Prosthenorchis elegans in Colombia based on cytochrome c oxidase I (COI) gene sequence

Fig. 4. Phylogenetic tree obtained using Bayesian Inference (BI) and Maximum Likelihood (ML); node supports are provided for BI\ML. Outgroup taxa: Oncicola sp, AF417000; O. luehe = Oncicola luehe, JN710452; M. ingens = Macracanthorhynchus ingens, AF416997; M. hirudinaceus = Macracanthorhynchus hirudinaceus, FR856886; O. tortuous = Oligacanthorhynchus tortuous, AF416999.

Fig. 3 in Mitochondrial DNA diversity in the acanthocephalan Prosthenorchis elegans in Colombia based on cytochrome c oxidase I (COI) gene sequence

Fig. 3. Haplotype network of Prosthenorchis elegans. Network shows relationships among P.elegans haplotypes (A–F) recovered from Saguinus leucopus and Cebus albifrons based on 633 bp of COI. All branches are of unit length (one mutational step). Labeled open circles represent observed haplotypes; areas of circles are proportional to the number observed for each haplotype. Filled circles indicate inferred haplotypes not found among sampled individuals. Double lines indicate variable sites (49, 274 and 293) resulting in changes in amino acid. Haplogroups are identified.

Fig. 2 in Mitochondrial DNA diversity in the acanthocephalan Prosthenorchis elegans in Colombia based on cytochrome c oxidase I (COI) gene sequence

Fig. 2. External morphology of Prosthenorchis elegans via scanning electron microscopy (SEM). A. View of entire body of parasite. B. Proboscis armed with hooks.

Fig. 3 in Differential patterns of definitive host use by two fish acanthocephalans occurring in sympatry: Pomphorhynchus laevis and Pomphorhynchus tereticollis

Fig. 3. Relative flow rates of P. tereticollis and P. laevis in their hosts in the Ouche (a) and Vingeanne (b) localities, taking into account the abundance of adult intestinal parasites and the relative abundance of each fish host species in the local community. The thickness of arrows and percentages indicate the estimated relative value of each fish species as a resource for each Pomphorhynchus species.

Fig. 6 in Differential patterns of definitive host use by two fish acanthocephalans occurring in sympatry: Pomphorhynchus laevis and Pomphorhynchus tereticollis

Fig. 6. Reproductive parameters of P. laevis and P. tereticollis: (a) testes volume as a function of adult worm size, according to parasite species and fish host; (b) number of ovarian balls according to parasite species and fish host; (c, d) number of eggs as a function of female size according to parasite species, in barbel (c) and chub (d).

Fig. 1 in Differential patterns of definitive host use by two fish acanthocephalans occurring in sympatry: Pomphorhynchus laevis and Pomphorhynchus tereticollis

Fig. 1. Percentage of P. laevis (plain bars) and P. tereticollis (striped bars) among Pomphorhynchus parasites collected from amphipod intermediate hosts in the benthos, and from the fish definitive hosts, either in the intestine or collected as extraintestinal cystacanths, in (a) the Ouche and (b) Vingeanne localities. The proportion of P. laevis and P. tereticollis in each fish species was compared to their proportion in intermediate gammarid hosts using Fisher exact test (P-values given after correction for multiple test: ***: P <0.001; **: P <0.01; *: P <0.05; ns: not significant). Letters above bars refer to post-hoc comparison between fish species (Tukey HSD). Numbers below bars are sample sizes (number of parasites). Bentho-pelagic fish species are abbreviated in italics, benthic species in standard font. Species abbreviations: Barbus barbus, Bbs; Gobio gobio, Gg; Squalius cephalus, Sc; Telestes souffia, Ts; Chondrostoma nasus, Cn; Rutilus rutilus, Rr; Scardinius erythrophthalmus, Se; Leuciscus leuciscus, Ll; Phoxinus phoxinus, Pp; Barbatula barbatula, Bba; Ameiurus melas, Am; Perca fluviatilis, Pf; Cottus gobio, Cg; Gasterosteus aculeatus, Ga.

Fig. 2 in Differential patterns of definitive host use by two fish acanthocephalans occurring in sympatry: Pomphorhynchus laevis and Pomphorhynchus tereticollis

Fig. 2. Relationship between fish biomass (g.100m-2) and P. laevis (a) or P. tereticollis (b) mean abundance per fish species, across fish species and localities (Ouche and Vingeanne localities). Both variables were log10-transformed.

Fig. 4 in Differential patterns of definitive host use by two fish acanthocephalans occurring in sympatry: Pomphorhynchus laevis and Pomphorhynchus tereticollis

Fig. 4. Relationship between the phylo-structural index of specificity towards definitive hosts and observed prevalence in gammarid intermediate hosts (%) in P. laevis and P. tereticollis. The phylo-structural index of specificity increases with the taxonomic diversity of fish species used.