A new genus and two new species of dactylogyrid monogeneans from gills of Neotropical catfishes (Siluriformes: Doradidae and Loricariidae)
Language English Country Netherlands Media print-electronic
Document type Journal Article
PubMed
28939534
DOI
10.1016/j.parint.2017.09.012
PII: S1383-5769(17)30323-9
Knihovny.cz E-resources
- Keywords
- Doradids, Host-associations, Integrative taxonomy, Loricariids, South America,
- MeSH
- Species Specificity MeSH
- Phylogeny MeSH
- Trematode Infections epidemiology parasitology veterinary MeSH
- Fish Diseases epidemiology parasitology MeSH
- RNA, Helminth genetics MeSH
- RNA, Ribosomal, 28S genetics MeSH
- Catfishes * MeSH
- Trematoda anatomy & histology classification genetics physiology MeSH
- Gills parasitology MeSH
- Animals MeSH
- Check Tag
- Animals MeSH
- Publication type
- Journal Article MeSH
- Geographicals
- Brazil epidemiology MeSH
- Names of Substances
- RNA, Helminth MeSH
- RNA, Ribosomal, 28S MeSH
A new genus of dactylogyrid monogeneans (Ancyrocephalinae), Paracosmetocleithrum n. gen., is erected to accommodate P. trachydorasi n. sp. from Trachydoras paraguayensis (Siluriformes: Doradidae) in the Upper Paraná River basin, Brazil. The new genus differs from Neotropical dactylogyrids in the presence of a well-developed ornamentation in the middle portion of the ventral bar, and a sclerotized patch on the surface of the dorsal bar with an inconspicuous medial process that possesses two submedial projections arising from the tapered ends of this patch. In addition, Demidospermus rhinelepisi n. sp. is described from Rhinelepis aspera (Siluriformes: Loricariidae). The new species, which is the fifth species of the genus described from loricariids, can be differentiated from congeners by the possession of a sclerotized patch attached to the middle portion of the ventral bar, and by morphology of the accessory piece, which presents broad ends, tapering in the centre, rounded proximal end, distal end folding on both sides with folds extending to approximately ¾ of the accessory piece length. Molecular data on both new species are also provided and species composition of Demidospermus, recently revealed as polyphyletic by molecular studies including the present one, is discussed.
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