title: Phylogenetic position of the genus Gonocerca Manter, 1925 (Trematoda, Hemiuroidea), based on partial sequences of 28S rRNA gene and a reconsideration of taxonomic status of Gonocercinae Skrjabin et Guschanskaja, 1955.
abstract: Adult trematodes of the genus Gonocerca Manter, 1925, are parasites of marine fishes. Identification of the phylogenetic positions and a revision of the taxonomic status of the subfamily Gonocercinae Skrjabin et Guschanskaja, 1955 (Derogenidae) are the main purposes of this research article. Four Gonocerca species were used in the study, including the type-species G. phycidis Manter, 1925. Molecular phylogenetic analysis, based on partial sequences of 28S rRNA gene, revealed that Gonocerca spp. are phylogenetically distant from other hemiuroid trematodes, including Derogenes varicus (Müller, 1784), representative of the type-genus of the family Derogenidae. The taxonomic rank of Gonocercinae should be raised to the family level. The generic composition of the family Gonocercidae Skrjabin et Guschanskaja, 1955 stat. nov., requires further clarification as the molecular data do not support the inclusion of the genus Hemipera Nicoll, 1913, in this family.
authors.affiliation: A.N. Severtsov Institute of Ecology and Evolution, Russian Academy of Sciences, Leninskij pr. 33, Moscow 119071, Russia.
authors.forename: Sergey G
authors.initials: SG
authors.lastname: Sokolov
authors.affiliation: Institute of Biology and Soil Science, Far Eastern Branch of the Russian Academy of Sciences, pr-t 100-letiya Vladivostoka 159, Vladivostok 690022, Russia; Department of Cell Biology and Genetics, Far Eastern Federal University, Sukhanova st. 8, Vladivostok 690051, Russia,. Electronic address: atop82@gmail.com.
authors.forename: Dmitry M
authors.initials: DM
authors.lastname: Atopkin
authors.affiliation: Russian Federal Research Institute of Fisheries and Oceanography, V. Krasnoselskaya st. 17, Moscow 107140, Russia.
authors.forename: Ilya I
authors.initials: II
authors.lastname: Gordeev
authors.affiliation: Institute of Biology and Soil Science, Far Eastern Branch of the Russian Academy of Sciences, pr-t 100-letiya Vladivostoka 159, Vladivostok 690022, Russia; Department of Cell Biology and Genetics, Far Eastern Federal University, Sukhanova st. 8, Vladivostok 690051, Russia.
authors.forename: Marina B
authors.initials: MB
authors.lastname: Shedko
mesh_terms: D000818:Animals; D018509:DNA, Helminth / Q000235:genetics; D005399:Fishes / Q000469:parasitology; D010802:Phylogeny; D012339:RNA, Ribosomal, 28S / Q000235:genetics*; D014200:Trematoda / Q000145:classification* / Q000235:genetics*
chemical_list: D018509:DNA, Helminth; D012339:RNA, Ribosomal, 28S
keywords: Gene of 28S rRNA; Gonocerca; Gonocercidae; Taxonomy