| acanthocephala of the bald eagle (haliaeetus leucocephalus) in north america. | examination of bald eagles (haliaeetus leucocephalus) collected from several locations in north america contributed new information concerning the acanthocephalan fauna of this host. representatives of arythmorhynchus brevis, representing a new host record, were collected from eagles in florida, new hampshire, and wisconsin. plagiorhynchus sp. was collected from an eagle in florida. corynosoma strumosum was collected from an eagle in alaska. andracantha phalacrocoracis, representing a new host r ... | 1997 | 9194845 |
| intra- and interspecific density-dependent effects on growth in helminth parasites of the cormorant, phalacrocorax carbo sinensis. | the action of intra- and interspecific competition, mediated by density-dependent effects on growth, was investigated among the 3 helminth species found in the alimentary tract of 104 cormorants, phalacrocorax carbo sinensis. intraspecific density-dependent effects on worm sizes were observed in the abundant nematode contracaecum rudolphii, as shown by a negative correlation between mean worm size and intensity of infection. higher intensities of infection by c. rudolphii were also associated wi ... | 2002 | 12049416 |
| molecular phylogeny of the acanthocephala (class palaeacanthocephala) with a paraphyletic assemblage of the orders polymorphida and echinorhynchida. | acanthocephalans are attractive candidates as model organisms for studying the ecology and co-evolutionary history of parasitic life cycles in the marine ecosystem. adding to earlier molecular analyses of this taxon, a total of 36 acanthocephalans belonging to the classes archiacanthocephala (3 species), eoacanthocephala (3 species), palaeacanthocephala (29 species), polyacanthocephala (1 species) and rotifera as outgroup (3 species) were analyzed by using bayesian inference and maximum likeliho ... | 2011 | 22163005 |
| helminth parasites of fish and shellfish from the santa gilla lagoon in southern sardinia, italy. | an extensive survey of helminth parasites in fish and shellfish species from santa gilla, a brackish water lagoon in southern sardinia (western mediterranean), resulted in the identification of 69 helminth parasite taxa and/or species from 13 fish species (n= 515) and seven bivalve species (n= 2322) examined between september 2001 and july 2011. the list summarizes information on the helminth parasites harboured by fish and molluscs contained in the available literature. digenea species (37), bo ... | 2014 | 23790066 |
| helminths from the giant mottled eel anguilla marmorata quoy & gaimard in japan, with a description of acanthocephalus longiacanthus n. sp. (acanthocephala: echinorhynchidae). | five helminths, including a new echinorhynchid acanthocephalan acanthocephalus longiacanthus n. sp., are described based on specimens from the giant mottled eel anguilla marmorata quoy & gaimard caught in a small river, western japan. the new acanthocephalan is distinguished from the other congeners in terms of hook arrangement (8-9 longitudinal rows with 5-6 hooks per row) on proboscis, maximum length of hook blade (81-95 μm in male, 150-190 μm in female), lemnisci being longer than proboscis r ... | 2014 | 24711116 |
| the complete mitochondrial genome sequence of southwellina hispida supports monophyly of palaeacanthocephala (acanthocephala: polymorphida). | acanthocephala is a relatively small, but distinct obligate parasitic group that includes 4 classes: archiacanthocephala, palaeacanthocephala, polyacanthocephala, and eoacanthocephala. the phylogenetic relationships of acanthocephalans are mainly based on nuclear ribosomal genes. in this study, we determined the complete mitochondrial genome sequence of southwellina hispida (palaeacanthocephala: polymorphida), and used this genome sequence along with other platyzoan species (including syndermata ... | 2015 | 25656507 |