{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,19]],"date-time":"2026-06-19T09:51:59Z","timestamp":1781862719550,"version":"3.54.5"},"reference-count":33,"publisher":"Cambridge University Press (CUP)","license":[{"start":{"date-parts":[[2025,3,13]],"date-time":"2025-03-13T00:00:00Z","timestamp":1741824000000},"content-version":"unspecified","delay-in-days":71,"URL":"https:\/\/www.cambridge.org\/core\/terms"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["J. Helminthol."],"published-print":{"date-parts":[[2025]]},"abstract":"<jats:title>Abstract<\/jats:title>\n\t  <jats:p>Gyrodactylidae Cobbold, 1864 is a monophyletic family of hyperviviparous species, with 36 genera and approximately 700 species. Here, we focused on one of these genera \u2013 namely <jats:italic>Scleroductus<\/jats:italic> Jara &amp; Cone, 1989 \u2013 characterizing its morphological variation systematically and testing its phylogenetic position in relation to other genera in the family. We collected and describe two new species of monogenean parasites of <jats:italic>Scleroductus<\/jats:italic> infecting Neotropical freshwater catfishes in Mexico. <jats:italic>Scleroductus veracruzano<\/jats:italic> n. sp. infects Guatemalan chul\u00edn, <jats:italic>Rhamdia guatemalensis<\/jats:italic> in Veracruz, while <jats:italic>Scleroductus oaxaqueno<\/jats:italic> n. sp. infects filespine chul\u00edn, <jats:italic>Rhamdia laticauda<\/jats:italic> in Oaxaca, Mexico. Sequences of the internal transcribed spacer (ITS rDNA) and 18S rDNA were generated for both species. Phylogenetic hypotheses based on maximum likelihood and Bayesian inference analyses of 18S rDNA indicate that the two new Mexican taxa are closely related to each other, and both appear as sister species to an undescribed but molecularly characterized <jats:italic>Scleroductus<\/jats:italic> sp. infecting South American catfish, <jats:italic>Rhamdia quelen<\/jats:italic> in Brazil. Our analyses confirm the placement of <jats:italic>Scleroductus<\/jats:italic> spp. within the monophyletic family Gyrodactylidae, whose sister clade is the Oogyrodactylidae. Within Gyrodactylidae, <jats:italic>Scleroductus<\/jats:italic> spp. form a clade sister to a well-supported clade composed by members of the genera <jats:italic>Ieredactylus<\/jats:italic>, <jats:italic>Gyrodactyloides<\/jats:italic> and <jats:italic>Laminiscus.<\/jats:italic><\/jats:p>","DOI":"10.1017\/s0022149x25000264","type":"journal-article","created":{"date-parts":[[2025,3,13]],"date-time":"2025-03-13T09:25:32Z","timestamp":1741857932000},"source":"Crossref","is-referenced-by-count":3,"title":["<i>Scleroductus<\/i> (Platyhelminthes: Monogenea) infecting <i>Rhamdia<\/i> spp. (Siluriformes: Heptapteridae) in Mexico, and their phylogenetic position within Gyrodactylidea"],"prefix":"10.1017","volume":"99","author":[{"ORCID":"https:\/\/orcid.org\/0000-0003-1076-2941","authenticated-orcid":false,"given":"A.","family":"Garc\u00eda-V\u00e1squez","sequence":"first","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1815-5417","authenticated-orcid":false,"given":"C.D.","family":"Pinacho-Pinacho","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-5192-2609","authenticated-orcid":false,"given":"I.","family":"Guzm\u00e1n-Valdivieso","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4409-3686","authenticated-orcid":false,"given":"M.","family":"Calixto-Rojas","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-1336-8034","authenticated-orcid":false,"given":"D.A.","family":"Pozos-Carr\u00e9","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9743-4416","authenticated-orcid":false,"given":"M.","family":"Rubio-Godoy","sequence":"additional","affiliation":[],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"56","published-online":{"date-parts":[[2025,3,13]]},"reference":[{"key":"S0022149X25000264_r26","doi-asserted-by":"publisher","DOI":"10.1093\/sysbio\/sys029"},{"key":"S0022149X25000264_r17","doi-asserted-by":"publisher","DOI":"10.1023\/A:1006413804061"},{"key":"S0022149X25000264_r6","doi-asserted-by":"publisher","DOI":"10.1007\/s11230-023-10113-4"},{"key":"S0022149X25000264_r1","doi-asserted-by":"publisher","DOI":"10.1130\/G37624.1"},{"key":"S0022149X25000264_r12","doi-asserted-by":"publisher","DOI":"10.1002\/ecy.3815"},{"key":"S0022149X25000264_r7","doi-asserted-by":"publisher","DOI":"10.1017\/S0022149X16000407"},{"key":"S0022149X25000264_r8","doi-asserted-by":"publisher","DOI":"10.1038\/nmeth.2109"},{"key":"S0022149X25000264_r31","unstructured":"Vidal-Mart\u00ednez, VM , Aguirre-Macedo, ML , Scholz, T , Gonz\u00e1lez-Sol\u00eds, D and Mendoza-Franco, EF (2001) Atlas of the Helminth Parasites of Cichlid Fish of Mexico. Praha: Academia, The Publisher of the Academy of Sciences of the Czech Republic."},{"key":"S0022149X25000264_r20","doi-asserted-by":"publisher","DOI":"10.1093\/molbev\/msw054"},{"key":"S0022149X25000264_r29","doi-asserted-by":"publisher","DOI":"10.14411\/fp.2004.029"},{"key":"S0022149X25000264_r11","doi-asserted-by":"publisher","DOI":"10.1051\/parasite\/2006134315"},{"key":"S0022149X25000264_r13","doi-asserted-by":"publisher","DOI":"10.1007\/s00436-015-4559-z"},{"key":"S0022149X25000264_r33","first-page":"2445","article-title":"Speciation by host switch and adaptive radiation in a fish parasite genus Gyrodactylus (Monogenea, Gyrodactylidae)","volume":"56","author":"Zi\u0119tara","year":"2002","journal-title":"Evolution"},{"key":"S0022149X25000264_r27","doi-asserted-by":"publisher","DOI":"10.1016\/j.biocon.2023.110174"},{"key":"S0022149X25000264_r5","doi-asserted-by":"publisher","DOI":"10.4067\/S0717-77122008000100009"},{"key":"S0022149X25000264_r23","doi-asserted-by":"publisher","DOI":"10.1590\/0001-3765202120190571"},{"key":"S0022149X25000264_r18","first-page":"125","article-title":"Scleroductus yuncensi gen. et sp. n. (Monogenea) from Pimelodella yuncensis (Siluriformes: Pimelodidae) in Peru","author":"Jara","year":"1989","journal-title":"Proceedings of the Helminthological Society of Washington"},{"key":"S0022149X25000264_r16","first-page":"263","article-title":"Hemibranch preference by freshwater monogeneans a function of gill area, water current, or both?","volume":"46","author":"Guti\u00e9rrez","year":"1999","journal-title":"Folia Parasitologica"},{"key":"S0022149X25000264_r32","unstructured":"WoRMS \u2013 World Register of Marine Species (2025) Gyrodactylidae Cobbold, 1864. Available at https:\/\/www.marinespecies.org\/aphia.php?p=taxdetails&id=119229 on Accessed 08 March 2025."},{"key":"S0022149X25000264_r24","doi-asserted-by":"publisher","DOI":"10.1016\/j.ijpara.2024.10.001"},{"key":"S0022149X25000264_r25","doi-asserted-by":"publisher","DOI":"10.1016\/j.ympev.2012.12.017"},{"key":"S0022149X25000264_r30","doi-asserted-by":"publisher","DOI":"10.1093\/bioinformatics\/btl446"},{"key":"S0022149X25000264_r9","doi-asserted-by":"publisher","DOI":"10.1590\/0001-3765201720160792"},{"key":"S0022149X25000264_r15","doi-asserted-by":"publisher","DOI":"10.1590\/0001-3765202020180610"},{"key":"S0022149X25000264_r22","doi-asserted-by":"publisher","DOI":"10.1007\/s11230-019-09862-y"},{"key":"S0022149X25000264_r10","first-page":"101","article-title":"Metazoan parasite fauna of Pimelodus maculatus La C\u00e9p\u00e8de","volume":"29","author":"dos Santos","year":"2007","journal-title":"Acta Scientiarum. Biological Sciences"},{"key":"S0022149X25000264_r4","doi-asserted-by":"publisher","DOI":"10.1016\/0166-6851(93)90199-8"},{"key":"S0022149X25000264_r2","doi-asserted-by":"publisher","DOI":"10.1111\/zsc.12455"},{"key":"S0022149X25000264_r14","doi-asserted-by":"publisher","DOI":"10.1017\/S0022149X22000918"},{"key":"S0022149X25000264_r3","doi-asserted-by":"publisher","DOI":"10.1006\/mpev.1995.1011"},{"key":"S0022149X25000264_r19","doi-asserted-by":"publisher","DOI":"10.1007\/s11230-012-9387-2"},{"key":"S0022149X25000264_r21","doi-asserted-by":"publisher","DOI":"10.1186\/s13071-015-0767-8"},{"key":"S0022149X25000264_r28","doi-asserted-by":"publisher","DOI":"10.1590\/S1984-29612014067"}],"container-title":["Journal of Helminthology"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/www.cambridge.org\/core\/services\/aop-cambridge-core\/content\/view\/S0022149X25000264","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2025,3,13]],"date-time":"2025-03-13T09:25:36Z","timestamp":1741857936000},"score":1,"resource":{"primary":{"URL":"https:\/\/www.cambridge.org\/core\/product\/identifier\/S0022149X25000264\/type\/journal_article"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[2025]]},"references-count":33,"alternative-id":["S0022149X25000264"],"URL":"https:\/\/doi.org\/10.1017\/s0022149x25000264","relation":{},"ISSN":["0022-149X","1475-2697"],"issn-type":[{"value":"0022-149X","type":"print"},{"value":"1475-2697","type":"electronic"}],"subject":[],"published":{"date-parts":[[2025]]},"article-number":"e47"}}