{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,23]],"date-time":"2026-10-23T22:38:44Z","timestamp":1792795124367,"version":"4.5.0"},"reference-count":48,"publisher":"Cambridge University Press (CUP)","issue":"14","license":[{"start":{"date-parts":[[2020,7,30]],"date-time":"2020-07-30T00:00:00Z","timestamp":1596067200000},"content-version":"unspecified","delay-in-days":0,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":["cambridge.org"],"crossmark-restriction":true},"short-container-title":["Parasitology"],"published-print":{"date-parts":[[2020,12]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>Gyrodactylid parasites were observed on non-native populations of North-American freshwater catfishes,<jats:italic>Ameiurus nebulosus<\/jats:italic>and<jats:italic>Ameiurus melas<\/jats:italic>(Siluriformes: Ictaluridae), at several sites in the Elbe River basin, Czech Republic, Europe. Using a combination of morphological and genetic analyses, the parasites infecting<jats:italic>A. nebulosus<\/jats:italic>were determined to be<jats:italic>Gyrodactylus nebulosus<\/jats:italic>, a North American parasite co-introduced to Europe along with its<jats:italic>Ameiurus<\/jats:italic>fish hosts. Subtle morphometrical differences, as well as seasonal variations, were observed among parasites collected from<jats:italic>A. nebulosus<\/jats:italic>and<jats:italic>A. melas<\/jats:italic>. The host-related variation was further supported through genetic analysis of the partial 18S rDNA, ITS1-5.8S-ITS2 and COI, showing 0.2, 3.0 and 4.8% divergence, respectively. Consistent genetic differences indicated there were two distinct genotypes. Subtle morphological differences associated with the shape of sickle toe, anchor root and ventral bar membrane, according to host species, also supported the description of a new cryptic species,<jats:italic>Gyrodactylus melas<\/jats:italic>n. sp., infecting<jats:italic>A. melas<\/jats:italic>. Multivariate morphometrical analysis of haptoral hard parts showed significant differences between the anchor lengths of<jats:italic>G. nebulosus<\/jats:italic>and<jats:italic>G. melas<\/jats:italic>n. sp. However, the measurements of the haptoral hard structures partially overlapped between species, limiting the usage of these parameters for species delineation.<\/jats:p>","DOI":"10.1017\/s0031182020001195","type":"journal-article","created":{"date-parts":[[2020,7,30]],"date-time":"2020-07-30T08:42:14Z","timestamp":1596098534000},"page":"1700-1711","update-policy":"https:\/\/doi.org\/10.1017\/policypage","source":"Crossref","is-referenced-by-count":21,"title":["Morphometric and genetic evidence for cryptic diversity in<i>Gyrodactylus<\/i>(Monogenea) infecting non-native European populations of<i>Ameiurus nebulosus<\/i>and<i>A. melas<\/i>"],"prefix":"10.1017","volume":"147","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-0933-806X","authenticated-orcid":false,"given":"Mark\u00e9ta","family":"Ondra\u010dkov\u00e1","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"M\u00e1ria","family":"Seifertov\u00e1","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Anna","family":"Bryjov\u00e1","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Eric","family":"Leis","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pavel","family":"Jurajda","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2020,7,30]]},"reference":[{"key":"S0031182020001195_ref6","doi-asserted-by":"publisher","DOI":"10.1007\/s00436-005-1311-0"},{"key":"S0031182020001195_ref17","doi-asserted-by":"publisher","DOI":"10.1093\/molbev\/msy096"},{"key":"S0031182020001195_ref31","doi-asserted-by":"publisher","DOI":"10.1111\/j.1439-0426.2010.01500.x"},{"key":"S0031182020001195_ref9","doi-asserted-by":"publisher","DOI":"10.1007\/s00436-015-4559-z"},{"key":"S0031182020001195_ref41","unstructured":"Shinn, AP , Harris, PD , Cable, J , Bakke, TA , Paladini, G and Bron, JE (2010) GyroDb. World Wide Web electronic publication. http:\/\/www.gyrodb.net, version (06\/2010)."},{"key":"S0031182020001195_ref30","doi-asserted-by":"publisher","DOI":"10.1007\/BF00009730"},{"key":"S0031182020001195_ref12","doi-asserted-by":"publisher","DOI":"10.1016\/j.pt.2007.06.007"},{"key":"S0031182020001195_ref37","doi-asserted-by":"publisher","DOI":"10.1016\/j.parint.2016.05.009"},{"key":"S0031182020001195_ref8","doi-asserted-by":"publisher","DOI":"10.2478\/s11686-011-0005-2"},{"key":"S0031182020001195_ref38","doi-asserted-by":"publisher","DOI":"10.2478\/s11686-007-0060-x"},{"key":"S0031182020001195_ref19","doi-asserted-by":"publisher","DOI":"10.3354\/dao02990"},{"key":"S0031182020001195_ref24","doi-asserted-by":"publisher","DOI":"10.25225\/fozo.v59.i1.a9.2010"},{"key":"S0031182020001195_ref44","doi-asserted-by":"publisher","DOI":"10.3897\/zookeys.365.5776"},{"key":"S0031182020001195_ref40","doi-asserted-by":"publisher","DOI":"10.14411\/fp.2004.029"},{"key":"S0031182020001195_ref29","doi-asserted-by":"publisher","DOI":"10.1007\/BF00009707"},{"key":"S0031182020001195_ref34","doi-asserted-by":"publisher","DOI":"10.1186\/1756-3305-4-100"},{"key":"S0031182020001195_ref47","doi-asserted-by":"publisher","DOI":"10.1111\/j.0014-3820.2002.tb00170.x"},{"key":"S0031182020001195_ref46","doi-asserted-by":"publisher","DOI":"10.1371\/journal.pone.0117096"},{"key":"S0031182020001195_ref43","doi-asserted-by":"publisher","DOI":"10.1007\/s00436-020-06699-z"},{"key":"S0031182020001195_ref1","doi-asserted-by":"publisher","DOI":"10.1093\/nar\/25.17.3389"},{"key":"S0031182020001195_ref35","doi-asserted-by":"crossref","first-page":"76","DOI":"10.1111\/j.1365-2699.2007.01794.x","article-title":"Colonization of Pacific islands by parasites of low dispersal ability: phylogeography of two monogenean species parasitizing butterflyfishes in the South Pacific Ocean","volume":"35","author":"Plaisance","year":"2008","journal-title":"Journal of Biogeography"},{"key":"S0031182020001195_ref7","volume-title":"Guide to Monogenoidea of Freshwater Fish of Palaearctic and Amur Regions","author":"Galli","year":"2010"},{"key":"S0031182020001195_ref27","first-page":"1","article-title":"The excretory systems and the marginal hooks as a basis for the systematics of Gyrodactylus (Trematoda, Monogenea)","volume":"23","author":"Malmberg","year":"1970","journal-title":"Arkiv f\u00fcr Zoology"},{"key":"S0031182020001195_ref26","doi-asserted-by":"publisher","DOI":"10.1111\/j.1461-0248.2010.01446.x"},{"key":"S0031182020001195_ref14","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-7519(02)00026-7"},{"key":"S0031182020001195_ref32","unstructured":"Muzzal, PM and Whelan, G (2011) Parasites of fish from the Great Lakes: a synopsis and review of the literature, 1871\u20132010. Great Lakes Fishery Commission Miscellaneous Publication 2011-01."},{"key":"S0031182020001195_ref10","doi-asserted-by":"publisher","DOI":"10.1139\/z2012-040"},{"key":"S0031182020001195_ref48","doi-asserted-by":"publisher","DOI":"10.1023\/A:1023938415148"},{"key":"S0031182020001195_ref18","doi-asserted-by":"publisher","DOI":"10.2478\/s11686-008-0015-x"},{"key":"S0031182020001195_ref20","doi-asserted-by":"publisher","DOI":"10.1007\/s00436-019-06483-8"},{"key":"S0031182020001195_ref33","doi-asserted-by":"publisher","DOI":"10.12782\/sd.20.1.095"},{"key":"S0031182020001195_ref22","doi-asserted-by":"publisher","DOI":"10.1007\/s00436-019-06598-y"},{"key":"S0031182020001195_ref2","doi-asserted-by":"publisher","DOI":"10.7717\/peerj.2804"},{"key":"S0031182020001195_ref23","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-7519(97)00086-6"},{"key":"S0031182020001195_ref13","doi-asserted-by":"publisher","DOI":"10.7591\/9781501735059"},{"key":"S0031182020001195_ref15","first-page":"189","volume-title":"Parasitic Diseases of Fish","author":"Kennedy","year":"1994"},{"key":"S0031182020001195_ref25","first-page":"171","article-title":"Co-invaders: the effects of alien parasites on native hosts","volume":"3","author":"Lymbery","year":"2014","journal-title":"International Journal for Parasitology: Parasites and Wildlife"},{"key":"S0031182020001195_ref21","doi-asserted-by":"publisher","DOI":"10.1007\/s00436-018-5763-4"},{"key":"S0031182020001195_ref42","volume-title":"Faune de France. No. 65, Poissons d'Eau Douce","author":"Spillman","year":"1961"},{"key":"S0031182020001195_ref3","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijpara.2011.01.002"},{"key":"S0031182020001195_ref16","doi-asserted-by":"publisher","DOI":"10.2307\/2423166"},{"key":"S0031182020001195_ref39","doi-asserted-by":"publisher","DOI":"10.1007\/s11160-012-9274-6"},{"key":"S0031182020001195_ref11","volume-title":"Fishes and Lampreys of the Czech Republic: Distribution and Conservation","author":"Hanel","year":"2005"},{"key":"S0031182020001195_ref28","doi-asserted-by":"publisher","DOI":"10.1016\/S0020-7519(01)00176-X"},{"key":"S0031182020001195_ref36","first-page":"315","article-title":"Fish Monogenoidea of Poland. II. Parasites of Ictalurus nebulosus (Le Sueur). Revision of genera Cleidodiscus Mueller, 1934 and Urocleidus Mueller, 1934","volume":"21","author":"Prost","year":"1973","journal-title":"Acta Parasitologica Polonica"},{"key":"S0031182020001195_ref4","doi-asserted-by":"publisher","DOI":"10.2307\/3284227"},{"key":"S0031182020001195_ref45","doi-asserted-by":"publisher","DOI":"10.1007\/s12686-014-0161-4"},{"key":"S0031182020001195_ref5","doi-asserted-by":"publisher","DOI":"10.2307\/3284442"}],"container-title":["Parasitology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0031182020001195","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2023,10,5]],"date-time":"2023-10-05T02:01:11Z","timestamp":1696471271000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0031182020001195\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2020,7,30]]},"references-count":48,"journal-issue":{"issue":"14","published-print":{"date-parts":[[2020,12]]}},"alternative-id":["S0031182020001195"],"URL":"https:\/\/doi.org\/10.1017\/s0031182020001195","relation":{},"ISSN":["0031-1820","1469-8161"],"issn-type":[{"value":"0031-1820","type":"print"},{"value":"1469-8161","type":"electronic"}],"subject":[],"published":{"date-parts":[[2020,7,30]]},"assertion":[{"value":"Copyright \u00a9 The Author(s), 2020. Published by Cambridge University Press","name":"copyright","label":"Copyright","group":{"name":"copyright_and_licensing","label":"Copyright and Licensing"}}]}}