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Emerging zoonotic risk: molecular detection of Trichobilharzia franki in Western Europe's largest artificial lake, Alqueva, Portugal

2026-02-03Artigo científico Acesso aberto
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dc.contributor.authorBispo, Maria Teresa
dc.contributor.authorMaurício, Isabel Larguinho
dc.contributor.authorFerreira, Pedro Manuel
dc.contributor.authorBelo, Silvana
dc.contributor.authorCalado, Manuela
dc.contributor.institutionInstituto de Higiene e Medicina Tropical (IHMT)
dc.contributor.institutionGlobal Health and Tropical Medicine (GHTM)
dc.contributor.institutionLaboratório Associado de Translacção e Inovação para a Saúde Global - LA Real (Pólo IHMT)
dc.contributor.institutionVector borne diseases and pathogens (VBD)
dc.contributor.pblElsevier BV
dc.date.accessioned2026-06-22T03:40:01Z
dc.date.available2026-06-22T03:40:01Z
dc.date.issued2026-02-03
dc.descriptionFunding information: This work is funded by national funds through FCT – Fundação para a Ciência e a Tecnologia, I.P., under the R&D unit Global Health and Tropical Medicine (DOI: 10.54499/UID/04413/2025) (UID/04413/2025) and the Associated Laboratory in Translation and Innovation Towards Global Health REAL (LA/P/0117/2020). And FCT – Fundação para a Ciência e a Tecnologia, I.P., under the Project Alqueva (PTDC-2022.01349). Publisher Copyright: © 2026 The Authors. Published by Elsevier B.V. on behalf of Shanghai Jiao Tong University. This is an open access article under the CC BY-NC-ND license. http://creativecommons.org/licenses/by-nc-nd/4.0/
dc.description.abstractBackground: Emerging parasites pose increasing challenges at the interface of human, animal, and ecosystem health. Among these, Trichobilharzia spp., schistosomatid of migratory and resident waterfowl, can cause cercarial dermatitis (CD) when its larval stage (cercaria) accidentally penetrate human skin. While this parasite has been documented in several European countries, its presence in Portugal has remained unreported, leaving a critical gap in understanding potential zoonotic risks in local freshwater ecosystems. Therefore, this study aimed to investigate the presence of Trichobilharzia spp. in freshwater snails from Lake Alqueva, providing the first insights into its potential ecological and public health implications in Portugal. Methods: Fieldwork was carried out on Lake Alqueva, considered the largest artificial reservoir in Western Europe, with ecological and public health relevance. Freshwater snails from shore locations in Lake Alqueva were examined for cercarial shedding, and molecular identification was performed by PCR amplification of the cytochrome c oxidase subunit 1 (COX1) gene and internal transcribed spacer (ITS) regions. Results: Morphological and genetic analyses confirmed Trichobilharzia franki from Radix auricularia, showing high homology with European and Asian lineages. Moreover, human infections compatible with CD were also reported in the region. Conclusions: These findings highlight the need for continued malacological surveillance, particularly in recreational freshwater bodies, to assess risk areas and implement mitigation strategies. Furthermore, this study expands the known geographical distribution of T. franki in Europe and underscores the importance of integrating ecological and public health approaches to monitor emerging zoonotic parasites.en
dc.description.versionpublishersversion
dc.description.versionpublished
dc.format.extent5538684
dc.identifier.doi10.1016/j.soh.2025.100143
dc.identifier.issn2949-7043
dc.identifier.otherPURE: 161541786
dc.identifier.otherPURE UUID: 41081301-9dc5-4505-8954-f244517b5297
dc.identifier.otherScopus: 105034173083
dc.identifier.otherWOS: 001684484300001
dc.identifier.otherPubMed: 41684463
dc.identifier.otherPubMedCentral: PMC12891867
dc.identifier.otherORCID: /0000-0002-7748-4643/work/218473494
dc.identifier.otherORCID: /0000-0001-8701-8657/work/218473508
dc.identifier.otherORCID: /0000-0003-3150-1791/work/218474010
dc.identifier.urihttp://hdl.handle.net/10362/203964
dc.identifier.urlhttps://www.scopus.com/pages/publications/105034173083
dc.language.isoeng
dc.peerreviewedyes
dc.subjectAvian schistosomes
dc.subjectCercarial dermatitis
dc.subjectLake Alqueva
dc.subjectPortugal
dc.subjectRadix auricularia
dc.subjectTrichobilharzia franki
dc.subjectGlobal and Planetary Change
dc.subjectEnvironmental Science (miscellaneous)
dc.subjectPollution
dc.subjectHealth Policy
dc.subjectPublic Health, Environmental and Occupational Health
dc.subjectManagement, Monitoring, Policy and Law
dc.subjectSDG 3 - Good Health and Well-being
dc.subjectSDG 15 - Life on Land
dc.titleEmerging zoonotic risk: molecular detection of Trichobilharzia franki in Western Europe's largest artificial lake, Alqueva, Portugalen
dc.typejournal article
degois.publication.titleScience in One Health
degois.publication.volume5
dspace.entity.typePublication
rcaap.rightsopenAccess

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