{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T09:04:45Z","timestamp":1789635885658,"version":"4.0.0"},"reference-count":55,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T00:00:00Z","timestamp":1789603200000},"content-version":"unspecified","delay-in-days":259,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"funder":[{"DOI":"10.13039\/501100012190","name":"Ministry of Science and Higher Education of the Russian Federation","doi-asserted-by":"publisher","award":["124021900011-9"],"award-info":[{"award-number":["124021900011-9"]}],"id":[{"id":"10.13039\/501100012190","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Helminthol."],"published-print":{"date-parts":[[2026]]},"abstract":"<jats:title>Abstract<\/jats:title>\n                  <jats:p>\n                    The family Allocreadiidae comprises diverse parasites of freshwater fishes, but their evolutionary timescale remains poorly understood. We provide a molecular dating analysis based on an expanded 28S rRNA dataset and redescriptions of two East Asian species,\n                    <jats:italic>Allocreadium hasu<\/jats:italic>\n                    and A.\n                    <jats:italic>pseudaspii<\/jats:italic>\n                    , with new morphological and genetic data.\n                    <jats:italic>Allocreadium hasu<\/jats:italic>\n                    from Lake Biwa (Japan) is genetically close to Far Eastern\n                    <jats:italic>A. khankaiense<\/jats:italic>\n                    and\n                    <jats:italic>A. anastasii<\/jats:italic>\n                    (0.09\u20130.97% divergence in 28S) but has not been recorded in the Russian Far East.\n                    <jats:italic>Allocreadium pseudaspii<\/jats:italic>\n                    , first recorded in the Bolshaya Ussurka River, possesses eyespot remnants and occupies a unique position among European species, suggesting secondary eastward dispersal. Phylogenetic analyses confirm family monophyly and resolve relationships among Palaearctic genera. Divergence time estimates indicate the most recent common ancestor of Allocreadiidae originated in East Asia during the Lower Cretaceous (~110 Ma). Diversification of major genera coincides with radiation of primary fish hosts:\n                    <jats:italic>Allocreadium<\/jats:italic>\n                    with Cypriniformes (~93 Ma),\n                    <jats:italic>Bunodera<\/jats:italic>\n                    with Perciformes (~75 Ma), and\n                    <jats:italic>Crepidostomum<\/jats:italic>\n                    s. str. with Nemacheilidae (~49 Ma). The basal genus\n                    <jats:italic>Acrolichanus<\/jats:italic>\n                    , parasitic on sturgeons, diverged earlier (40\u201380 Ma). The split between the Neotropical genus\n                    <jats:italic>Margotrema<\/jats:italic>\n                    and its Palaearctic relatives is estimated at ~6.5 Ma, consistent with closure of the Panama Isthmus. Our results provide a temporal framework for Allocreadiidae evolution, linking diversification to biogeographic history of freshwater fish hosts in East Asia and subsequent dispersal to North America via the Bering land bridge and to South America through the Panama Isthmus.\n                  <\/jats:p>","DOI":"10.1017\/s0022149x26102156","type":"journal-article","created":{"date-parts":[[2026,9,17]],"date-time":"2026-09-17T08:37:25Z","timestamp":1789634245000},"source":"Crossref","is-referenced-by-count":0,"title":["Redescription of two\n                    <i>Allocreadium<\/i>\n                    species and molecular dating of the family Allocreadiidae (Trematoda: Gorgoderoidea)"],"prefix":"10.1017","volume":"100","author":[{"ORCID":"https:\/\/orcid.org\/0000-0002-0650-6374","authenticated-orcid":false,"given":"K.S.","family":"Vainutis","sequence":"first","affiliation":[{"name":"A. V. 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Papanin Institute of Biology of Inland Waters, Russian Academy of Sciences"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3546-4035","authenticated-orcid":false,"given":"M.","family":"Urabe","sequence":"additional","affiliation":[{"name":"School of Environmental Science, The University of Shiga Prefecture"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2778-0273","authenticated-orcid":false,"given":"A.","family":"Aydogdu","sequence":"additional","affiliation":[{"name":"Bursa Uludag University"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2026,9,17]]},"reference":[{"key":"S0022149X26102156_r30","doi-asserted-by":"publisher","DOI":"10.3390\/d15050645"},{"key":"S0022149X26102156_r58","first-page":"1","article-title":"Trematodes of the genus Crepidostomum (Allocreadiidae) from freshwater fishes of Japan. 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