{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,1,20]],"date-time":"2026-01-20T04:44:23Z","timestamp":1768884263904,"version":"3.49.0"},"reference-count":52,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2024,5,31]],"date-time":"2024-05-31T00:00:00Z","timestamp":1717113600000},"content-version":"unspecified","delay-in-days":151,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Helminthol."],"published-print":{"date-parts":[[2024]]},"abstract":"<jats:title>Abstract<\/jats:title>\n\t  <jats:p>The Cyathocotylidae M\u00fchling, 1898 is a family of primitive diplostomoid trematodes important for understanding the evolution of the superfamily Diplostomoidea. However, cyathocotylids remain poorly studied with the use of molecular techniques. In this study we sequenced the 5.8S + ITS2 region, <jats:italic>28S rRNA<\/jats:italic>, and <jats:italic>cox1<\/jats:italic> genes of two cyathocotylid species and obtained new morphological data on them. We propose <jats:italic>Georduboisia<\/jats:italic> nom. nov. instead of the preoccupied name <jats:italic>Duboisia<\/jats:italic> Szidat, 1936 (junior homonym of <jats:italic>Duboisia<\/jats:italic> Stremme, 1911). Adults of <jats:italic>Georduboisia<\/jats:italic> cf. <jats:italic>teganuma<\/jats:italic> (Ishii, 1935) and <jats:italic>Paracoenogonimus ovatus<\/jats:italic> Katsurada, 1914 were collected from fish-eating birds in the south of the European part of Russia. <jats:italic>Georduboisia<\/jats:italic> cf. <jats:italic>teganuma<\/jats:italic> was very similar to <jats:italic>G.<\/jats:italic><jats:italic>teganuma<\/jats:italic> but differed from it in the shape of the testes. The <jats:italic>28S rRNA<\/jats:italic> gene dataset provided the best-resolved phylogeny of the Cyathocotylidae to date. In the phylogram based on partial sequences of this gene, <jats:italic>P. ovatus<\/jats:italic> was close to members of <jats:italic>Holostephanoides<\/jats:italic> Dubois, 1983, <jats:italic>Neogogatea<\/jats:italic> Chandler &amp; Rausch, 1947 and <jats:italic>Gogatea<\/jats:italic> Szidat, 1936. <jats:italic>Georduboisia<\/jats:italic> cf. <jats:italic>teganuma<\/jats:italic> clustered with members of <jats:italic>Cyathocotyle<\/jats:italic> M\u00fchling, 1896 and <jats:italic>Holostephanus<\/jats:italic> Szidat, 1936. Phylogenetic analysis based on the 5.8S + ITS2 dataset showed that adults of <jats:italic>P. ovatus<\/jats:italic> examined in our study were conspecific with the metacercariae from the musculature of fish collected in Hungary and Italy. It also revealed probable misidentifications of larvae and adults of cyathocotylids whose sequences are deposited in GenBank NCBI.<\/jats:p>","DOI":"10.1017\/s0022149x24000348","type":"journal-article","created":{"date-parts":[[2024,5,31]],"date-time":"2024-05-31T09:59:40Z","timestamp":1717149580000},"source":"Crossref","is-referenced-by-count":6,"title":["Phylogeny and morphology of some European cyathocotylid digeneans (Trematoda: Diplostomoidea)"],"prefix":"10.1017","volume":"98","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-4822-966X","authenticated-orcid":false,"given":"S.G.","family":"Sokolov","sequence":"first","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5741-2255","authenticated-orcid":false,"given":"S.A.","family":"Vlasenkov","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-5285-6933","authenticated-orcid":false,"given":"S.V.","family":"Bugmyrin","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-0640-7963","authenticated-orcid":false,"given":"A.P.","family":"Kalmykov","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9185-3900","authenticated-orcid":false,"given":"D.I.","family":"Lebedeva","sequence":"additional","affiliation":[],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"56","published-online":{"date-parts":[[2024,5,31]]},"reference":[{"key":"S0022149X24000348_r22","first-page":"467","article-title":"Studies on bird trematodes. 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