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Molecular Screening of Sarcocystis spp. in Grazing Sheep (Ovis aries) and Shepherd Dogs (Canis lupus familiaris) from Central Portugal

2025-12-02Artigo de investigação Acesso aberto
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dc.contributor.authorGomes-Gonçalves, Sara
dc.contributor.authorFigueiredo, Ricardo J.
dc.contributor.authorRodrigues, Soraia
dc.contributor.authorBento, Jaqueline T.
dc.contributor.authorSantos-Silva, Sérgio
dc.contributor.authorAlmeida, Daniela
dc.contributor.authorCruz, Rita
dc.contributor.authorEsteve, Fernando
dc.contributor.authorEsteves, Fernando
dc.contributor.authorBaptista, Alexandra Lameira
dc.contributor.authorPereira, Maria Aires
dc.contributor.authorCardoso, Luís
dc.contributor.authorMesquita, João R.
dc.date.accessioned2026-02-06T13:48:20Z
dc.date.available2026-02-06T13:48:20Z
dc.date.issued2025-12-02en_US
dc.date.updated2026-01-31T18:18:43Z
dc.description.abstractSarcocystis spp. are cyst-forming protozoan parasites with a global distribution that infect a wide range of domestic and wild animals, impacting both animal health and livestock productivity. In sheep, infections can cause clinical disease, reproductive losses, and economic damage, articularly when pathogenic species such as Sarcocystis tenella are involved. Grazing sheep, including breeds such as the Serra da Estrela from central Portugal, are at increased risk due to frequent contact with shepherd dogs, which serve as definitive hosts. Despite their significance, data on the occurrence and distribution of Sarcocystis spp. in Portuguese sheep remain limited. This study analyzed 179 samples collected in central Portugal during 2024, including 41 brain tissues and 88 blood samples from sheep, and 50 stool samples from shepherd dogs, using conventional PCR and bidirectional Sanger sequencing. Sarcocystis sp. closely related to S. tenella was detected exclusively in sheep brain tissue, with a prevalence of 4.9% (2/41; 95% CI: 0.60–16.53), while no parasite DNA was found in blood or dog samples. These results provide the first molecular confirmation of Sarcocystis spp. closely related to S. tenella in Portuguese sheep raised for human consumption and establish baseline data for future epidemiological surveillance and control strategies.eng
dc.description.versionN/A
dc.identifier.citationGomes-Gonçalves, S.; Figueiredo, R.J.; Rodrigues, S.; Bento, J.T.; Santos-Silva, S.; Almeida, D.; Cruz, R.; Esteves, F.; Baptista, A.L.; Pereira, M.A.; et al. Molecular Screening of Sarcocystis spp. in Grazing Sheep (Ovis aries) and Shepherd Dogs (Canis lupus familiaris) from Central Portugal. Animals 2025, 15, 3479. https://doi.org/10.3390/ ani15233479
dc.identifier.doi10.3390/ani15233479en_US
dc.identifier.issn2076-2615en_US
dc.identifier.slugcv-prod-4702489
dc.identifier.urihttp://hdl.handle.net/10400.19/9661
dc.language.isoeng
dc.peerreviewedyes
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/
dc.subjectPortugal
dc.subjectSarcocystis spp
dc.subjectsheep
dc.titleMolecular Screening of Sarcocystis spp. in Grazing Sheep (Ovis aries) and Shepherd Dogs (Canis lupus familiaris) from Central Portugalen_US
dc.typeresearch articleen_US
dspace.entity.typePublication
oaire.citation.startPage3479
oaire.citation.titleAnimalsen_US
oaire.citation.volume15en_US
oaire.versionhttp://purl.org/coar/version/c_970fb48d4fbd8a85
person.familyNameCruz
person.familyNameEsteves
person.givenNameRita
person.givenNameFernando
person.identifier.ciencia-idA11E-DBFF-16E8
person.identifier.ciencia-id6E19-A3CC-897E
person.identifier.orcid0000-0002-5767-7835
person.identifier.orcid0000-0003-0589-0746
rcaap.cv.cienciaid6E19-A3CC-897E | Fernando Alexandre Almeida Esteves
rcaap.rightsopenAccessen_US
relation.isAuthorOfPublication8e60c18a-9c3f-4b0e-be9e-4378ebc1594e
relation.isAuthorOfPublication93d688a9-9716-444c-9d08-fdca593d630d
relation.isAuthorOfPublication.latestForDiscovery8e60c18a-9c3f-4b0e-be9e-4378ebc1594e

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