Central European parasitic flatworms of the Cyclocoelidae Stossich, 1902 (Trematoda: Plagiorchiida): molecular and comparative morphological analysis suggests the reclassification of Cyclocoelum obscurum (Leidy, 1887) into the Harrahium Witenberg, 1926
Language English Country England, Great Britain Media print-electronic
Document type Journal Article, Research Support, Non-U.S. Gov't
PubMed
27831461
DOI
10.1017/s0031182016001955
PII: S0031182016001955
Knihovny.cz E-resources
- Keywords
- Cyclocoelum obscurum, Fulica atra, Helicella, Tringa nebularis, Turdus philomelos, Haematotrephinae, Hyptiasminae, Morishitinae, air sacs, lungs,
- MeSH
- DNA, Helminth genetics isolation & purification MeSH
- Species Specificity MeSH
- Phylogeny MeSH
- Trematode Infections epidemiology parasitology veterinary MeSH
- DNA, Ribosomal Spacer genetics MeSH
- Bird Diseases epidemiology parasitology MeSH
- Birds MeSH
- Gene Expression Regulation, Enzymologic MeSH
- Electron Transport Complex IV genetics metabolism MeSH
- RNA, Helminth genetics MeSH
- RNA, Ribosomal, 18S genetics MeSH
- Trematoda anatomy & histology classification genetics MeSH
- Animals MeSH
- Check Tag
- Female MeSH
- Animals MeSH
- Publication type
- Journal Article MeSH
- Research Support, Non-U.S. Gov't MeSH
- Geographicals
- Europe epidemiology MeSH
- Names of Substances
- DNA, Helminth MeSH
- DNA, Ribosomal Spacer MeSH
- Electron Transport Complex IV MeSH
- RNA, Helminth MeSH
- RNA, Ribosomal, 18S MeSH
Cyclocoelidae Stossich, 1902 are medium-sized to large digenean bird parasites. Although these parasites bear few visible autapomorphic signs, and their diagnostic characters are unstable in response to the pressure applied during preparation, the numerous hitherto suggested re-classifications within the family have not been supported by any molecular analysis. We analyse here cyclocoelids found during the extensive examination of central European birds performed from 1962 to 2016, provide comparative measurements, host spectra, prevalence and intensity, and provide and analyse sequences of four DNA loci of five of the cyclocoelid species. Cyclocoleum Brandes, 1892 appears paraphyletic; thus we suggest the re-classification of Cyclocoleum obscurum (Leidy, 1887) as Harrahium obscurum (Leidy, 1887) Sitko and Heneberg comb. n. Molecular phylogenetics questioned also the validity of Cyclocoelinae Stossich, 1902 and Hyptiasminae Dollfus, 1948, which formed a single clade, whereas Allopyge Johnston, 1913, Prohyptiasmus Witenberg, 1923 and Morishitium Witenberg, 1928 formed another clade. Haematotrephinae Dollfus, 1948 are newly characterized as having a pretesticular or intertesticular ovary that forms a triangle with the testes. Analyses of non-European genera of the Cyclocoelidae and an examination of the position of families within Echinostomata La Rue, 1926 are needed.
3rd Faculty of Medicine Charles University Prague Czech Republic
Comenius Museum Moravian Ornithological Station Přerov Czech Republic
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