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Bras. Parasitol. Vet."],"abstract":"<jats:p>Abstract The white-eared opossum Didelphis albiventris is widely distributed throughout Brazil and hosts several parasite species. This study aimed to analyze the influence of intrinsic (sex and age of hosts) and extrinsic (locality and type of land use) factors on the helminth communities of the white-eared opossum in areas of the Atlantic Forest. Helminth samples from 93 D. albiventris specimens from six different localities were used: Belo Horizonte, MG; Curitiba and Gua\u00edra, PR; Porto Alegre, RS; and Mamanguape and Santa Rita, PB. Fourteen species of helminths were identified: Aspidodera raillieti, Cruzia tentaculata, Turgida turgida, Viannaia hamata, Rhopalias coronatus, Rhopalias horridus, Duboisiella proloba, Travassostrongylus orloffi, Travassostrongylus sextus, Brachylaima advena, Plagiorchis didelphidis, Trichuris minuta, Trichuris didelphis, and Oligacanthorhynchus microcephalus. Female hosts and adult hosts had greater helminth species richness and abundance. The helminth species richness and abundance in D. albiventris were influenced by intrinsic (sex and age of the host) and extrinsic (locality and land use) factors with the locality being the main determinant. The structure of the helminth infracommunities varied spatially, with greater differences with increasing geographic distance, highlighting the complexity of host\u2012parasite interactions in wildlife.<\/jats:p>","DOI":"10.1590\/s1984-29612026036","type":"journal-article","created":{"date-parts":[[2026,8,3]],"date-time":"2026-08-03T11:01:23Z","timestamp":1785754883000},"source":"Crossref","is-referenced-by-count":0,"title":["Evaluation of the intrinsic and extrinsic ecological effects on the helminth communities of Didelphis albiventris (Didelphimorphia, Didelphidae) in Atlantic Forest areas"],"prefix":"10.1590","volume":"35","author":[{"ORCID":"https:\/\/orcid.org\/0009-0000-9678-3238","authenticated-orcid":false,"given":"Filipe Andrade","family":"Rangel","sequence":"first","affiliation":[{"name":"Funda\u00e7\u00e3o Oswaldo Cruz,  Brasil; Funda\u00e7\u00e3o Oswaldo Cruz,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2724-6038","authenticated-orcid":false,"given":"Thiago dos Santos","family":"Cardoso","sequence":"additional","affiliation":[{"name":"Funda\u00e7\u00e3o Oswaldo Cruz,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-0088-9343","authenticated-orcid":false,"given":"Bruna Silva","family":"Cirino","sequence":"additional","affiliation":[{"name":"Funda\u00e7\u00e3o Oswaldo Cruz,  Brasil; Funda\u00e7\u00e3o Oswaldo Cruz,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-2813-525X","authenticated-orcid":false,"given":"S\u00f3crates Fraga da","family":"Costa-Neto","sequence":"additional","affiliation":[{"name":"Funda\u00e7\u00e3o Oswaldo Cruz,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3370-7304","authenticated-orcid":false,"given":"Camila dos Santos","family":"Lucio","sequence":"additional","affiliation":[{"name":"Funda\u00e7\u00e3o Oswaldo Cruz,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-3275-2648","authenticated-orcid":false,"given":"Roberto do Val","family":"Vilela","sequence":"additional","affiliation":[{"name":"Funda\u00e7\u00e3o Oswaldo Cruz,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0003-4067-8660","authenticated-orcid":false,"given":"Arnaldo","family":"Maldonado-J\u00fanior","sequence":"additional","affiliation":[{"name":"Funda\u00e7\u00e3o Oswaldo Cruz,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"ORCID":"https:\/\/orcid.org\/0000-0001-9160-1204","authenticated-orcid":false,"given":"Rosana","family":"Gentile","sequence":"additional","affiliation":[{"name":"Funda\u00e7\u00e3o Oswaldo Cruz,  Brasil"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"530","published-online":{"date-parts":[[2026]]},"reference":[{"issue":"511","key":"ref1","first-page":"131","article-title":"Helminths of three species of opossums (Mammalia, Didelphidae) from Mexico","volume":"511","author":"Acosta-Virgen K","year":"2015","journal-title":"ZooKeys"},{"key":"ref2","series-title":"Protocolo para laborat\u00f3rio: coleta e processamento de parasitas do pescado.","author":"Amato JFR","year":"1991"},{"key":"ref3","series-title":"Keys to the nematode parasites of vertebrates: archival volume.","author":"Anderson 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