ENCYCLOBREPHUS BREVIVITELLUS N. SP. (DIGENEA: PLAGIORCHIOIDEA, INCERTAE SEDIS) INFECTING THE MEKONG SNAIL-EATING TURTLE, MALAYEMYS SUBTRIJUGA, IN THE MEKONG RIVER, VIETNAM, WITH PHYLOGENETIC ANALYSES BASED ON RDNA.

Autor:	Knudson HP; Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, Auburn University, 559 Devall Drive, Auburn, Alabama 36832., Curran SS; Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, Auburn University, 559 Devall Drive, Auburn, Alabama 36832., Truong TN; Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, Auburn University, 559 Devall Drive, Auburn, Alabama 36832., Dutton HR; Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, Auburn University, 559 Devall Drive, Auburn, Alabama 36832., Bullard SA; Aquatic Parasitology Laboratory and Southeastern Cooperative Fish Parasite and Disease Laboratory, Auburn University, 559 Devall Drive, Auburn, Alabama 36832.; Department of Zoology, School for Environmental Sciences and Development, North-West University, Private Bag X6001, Potchefstroom, 2520, South Africa.
Jazyk:	angličtina
Zdroj:	The Journal of parasitology [J Parasitol] 2023 Mar 01; Vol. 109 (2), pp. 87-95.
DOI:	10.1645/22-98
Abstrakt:	A new digenean species belonging in EncyclobrephusSinha, 1949 is described, and the generic diagnosis is amended to accommodate variation in several features of the new species. Worms were collected from the intestines of 2 specimens of the Mekong snail-eating turtle, Malayemys subtrijuga (Schlegel and Müller, 1845). Permanent whole-mounted worms were studied using light microscopy, and ribosomal DNA (rDNA) sequences were generated from 3 worms. We investigated the phylogenetic relationship of the new species among some digenea using separate Bayesian inference analyses, 1 based on the 28S rDNA gene and rooted using a species from the Monorchioidea Odhner, 1911, and a second based on the internal transcribed spacer 1 region rooted by a species in the Microphalloidea Ward, 1901. Prior to the analyses, Encyclobrephus was classified in the Encyclometridae Mehra, 1931. Previous studies using rDNA from the type species for the family, Encyclometra colubrimurorum (Rudolphi, 1819) Baylis and Cannon, 1924, have demonstrated that En. colubrimurorum is closely related to species of Polylekithum Arnold, 1934 in the Gorgoderoidea Looss, 1901. Nevertheless, phylograms from both analyses indicated that the new species of Encyclobrephus belongs in the Plagiorchioidea Lühe, 1901, related to species in the families Cephalogonimidae Looss, 1899, Plagiorchiidae Lühe, 1901, Reniferidae Pratt, 1902, and Telorchiidae Looss, 1899. The present results suggest that Encyclobrephus is not closely related to En. colubrimurorum. Familial classification of Encyclobrephus is contingent on molecular data availability for the type species but it should be removed from the Encyclometridae and classified as incertae sedis within the Plagiorchioidea. Encyclometridae belongs in the Gorgoderoidea, not the Plagiorchioidea. (© American Society of Parasitologists 2023.)
Databáze:	MEDLINE
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