Effects of intrinsic and extrinsic factors on intestinal parasites in a subpopulation of screaming hairy armadillo, Chaetophractus vellerosus (Xenarthra: Chlamyphoridae) from Centr...

Autores
Pagnutti, Noralí; Lacunza, Josefina; Vercellini, María Clara; Plez Ragusa, María Carolina; Fux, Luisina; Minardi, Graciela; Abba, Agustín Manuel; Ezquiaga, María Cecilia
Año de publicación
2026
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Environmental stressors, host condition, and parasitic infections are closely linked, as adverse conditions may compromise individual health and increase susceptibility to parasitism. This study evaluated the influence of intrinsic (body condition) and extrinsic host factors (farm, mining activity, cattle load, and dog abundance) on prevalence and parasite load in the Endangered subpopulation of Chaetophractus vellerosus from eastern Buenos Aires Province, Argentina. Fecal samples from 45 individuals were analyzed using coproparasitological techniques, including modified Ritchie sedimentation combined with Ziehl–Neelsen staining and Willis flotation to estimate prevalence, and a McMaster chamber to quantify parasite load. Body condition was estimated using a weight-to-total length index. All samples were parasitized. Oocysts of Eimeria spp. and Cryptosporidium sp., as well as helminth eggs (Cestoda and Nematoda), were identified. Aspidodera spp., Eimeria sp. 1, and Eimeria sp. 4 showed the highest prevalences, while Eimeria spp. exhibited the highest parasite loads. None of the models were statistically significant; however, infections with Eimeria sp. 3 were the closest to significance, being more frequent in farms with low mining and cattle activity and high dog abundance. This pattern may reflect higher vegetation cover and soil moisture favoring oocyst survival. Further research is needed to disentangle the effects of specific anthropogenic pressures on host–parasite–environment interactions.
Centro de Estudios Parasitológicos y de Vectores
Materia
Biología
Armadillos
Cestoda
Coccidia
Livestock production
Nematoda
Soil
Nivel de accesibilidad
acceso abierto
Condiciones de uso
http://creativecommons.org/licenses/by-nc-nd/4.0/
Repositorio
SEDICI (UNLP)
Institución
Universidad Nacional de La Plata
OAI Identificador
oai:sedici.unlp.edu.ar:10915/193592
Acceder
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oai_identifier_str oai:sedici.unlp.edu.ar:10915/193592
network_acronym_str SEDICI
repository_id_str 1329
network_name_str SEDICI (UNLP)
spelling Effects of intrinsic and extrinsic factors on intestinal parasites in a subpopulation of screaming hairy armadillo, Chaetophractus vellerosus (Xenarthra: Chlamyphoridae) from Central-Eastern ArgentinaPagnutti, NoralíLacunza, JosefinaVercellini, María ClaraPlez Ragusa, María CarolinaFux, LuisinaMinardi, GracielaAbba, Agustín ManuelEzquiaga, María CeciliaBiologíaArmadillosCestodaCoccidiaLivestock productionNematodaSoilEnvironmental stressors, host condition, and parasitic infections are closely linked, as adverse conditions may compromise individual health and increase susceptibility to parasitism. This study evaluated the influence of intrinsic (body condition) and extrinsic host factors (farm, mining activity, cattle load, and dog abundance) on prevalence and parasite load in the Endangered subpopulation of Chaetophractus vellerosus from eastern Buenos Aires Province, Argentina. Fecal samples from 45 individuals were analyzed using coproparasitological techniques, including modified Ritchie sedimentation combined with Ziehl–Neelsen staining and Willis flotation to estimate prevalence, and a McMaster chamber to quantify parasite load. Body condition was estimated using a weight-to-total length index. All samples were parasitized. Oocysts of Eimeria spp. and Cryptosporidium sp., as well as helminth eggs (Cestoda and Nematoda), were identified. Aspidodera spp., Eimeria sp. 1, and Eimeria sp. 4 showed the highest prevalences, while Eimeria spp. exhibited the highest parasite loads. None of the models were statistically significant; however, infections with Eimeria sp. 3 were the closest to significance, being more frequent in farms with low mining and cattle activity and high dog abundance. This pattern may reflect higher vegetation cover and soil moisture favoring oocyst survival. Further research is needed to disentangle the effects of specific anthropogenic pressures on host–parasite–environment interactions.Centro de Estudios Parasitológicos y de Vectores2026-03-16info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfhttps://doi.org/10.1007/s00436-026-08654-whttp://sedici.unlp.edu.ar/handle/10915/193592enginfo:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00436-026-08654-w#rightslinkinfo:eu-repo/semantics/altIdentifier/issn/1432-1955info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-nd/4.0/Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2026-05-13T12:59:56Zoai:sedici.unlp.edu.ar:10915/193592Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292026-05-13 12:59:57.113SEDICI (UNLP) - Universidad Nacional de La Platafalse
dc.title.none.fl_str_mv Effects of intrinsic and extrinsic factors on intestinal parasites in a subpopulation of screaming hairy armadillo, Chaetophractus vellerosus (Xenarthra: Chlamyphoridae) from Central-Eastern Argentina
title Effects of intrinsic and extrinsic factors on intestinal parasites in a subpopulation of screaming hairy armadillo, Chaetophractus vellerosus (Xenarthra: Chlamyphoridae) from Central-Eastern Argentina
spellingShingle Effects of intrinsic and extrinsic factors on intestinal parasites in a subpopulation of screaming hairy armadillo, Chaetophractus vellerosus (Xenarthra: Chlamyphoridae) from Central-Eastern Argentina
Pagnutti, Noralí
Biología
Armadillos
Cestoda
Coccidia
Livestock production
Nematoda
Soil
title_short Effects of intrinsic and extrinsic factors on intestinal parasites in a subpopulation of screaming hairy armadillo, Chaetophractus vellerosus (Xenarthra: Chlamyphoridae) from Central-Eastern Argentina
title_full Effects of intrinsic and extrinsic factors on intestinal parasites in a subpopulation of screaming hairy armadillo, Chaetophractus vellerosus (Xenarthra: Chlamyphoridae) from Central-Eastern Argentina
title_fullStr Effects of intrinsic and extrinsic factors on intestinal parasites in a subpopulation of screaming hairy armadillo, Chaetophractus vellerosus (Xenarthra: Chlamyphoridae) from Central-Eastern Argentina
title_full_unstemmed Effects of intrinsic and extrinsic factors on intestinal parasites in a subpopulation of screaming hairy armadillo, Chaetophractus vellerosus (Xenarthra: Chlamyphoridae) from Central-Eastern Argentina
title_sort Effects of intrinsic and extrinsic factors on intestinal parasites in a subpopulation of screaming hairy armadillo, Chaetophractus vellerosus (Xenarthra: Chlamyphoridae) from Central-Eastern Argentina
dc.creator.none.fl_str_mv Pagnutti, Noralí
Lacunza, Josefina
Vercellini, María Clara
Plez Ragusa, María Carolina
Fux, Luisina
Minardi, Graciela
Abba, Agustín Manuel
Ezquiaga, María Cecilia
author Pagnutti, Noralí
author_facet Pagnutti, Noralí
Lacunza, Josefina
Vercellini, María Clara
Plez Ragusa, María Carolina
Fux, Luisina
Minardi, Graciela
Abba, Agustín Manuel
Ezquiaga, María Cecilia
author_role author
author2 Lacunza, Josefina
Vercellini, María Clara
Plez Ragusa, María Carolina
Fux, Luisina
Minardi, Graciela
Abba, Agustín Manuel
Ezquiaga, María Cecilia
author2_role author
author
author
author
author
author
author
dc.subject.none.fl_str_mv Biología
Armadillos
Cestoda
Coccidia
Livestock production
Nematoda
Soil
topic Biología
Armadillos
Cestoda
Coccidia
Livestock production
Nematoda
Soil
dc.description.none.fl_txt_mv Environmental stressors, host condition, and parasitic infections are closely linked, as adverse conditions may compromise individual health and increase susceptibility to parasitism. This study evaluated the influence of intrinsic (body condition) and extrinsic host factors (farm, mining activity, cattle load, and dog abundance) on prevalence and parasite load in the Endangered subpopulation of Chaetophractus vellerosus from eastern Buenos Aires Province, Argentina. Fecal samples from 45 individuals were analyzed using coproparasitological techniques, including modified Ritchie sedimentation combined with Ziehl–Neelsen staining and Willis flotation to estimate prevalence, and a McMaster chamber to quantify parasite load. Body condition was estimated using a weight-to-total length index. All samples were parasitized. Oocysts of Eimeria spp. and Cryptosporidium sp., as well as helminth eggs (Cestoda and Nematoda), were identified. Aspidodera spp., Eimeria sp. 1, and Eimeria sp. 4 showed the highest prevalences, while Eimeria spp. exhibited the highest parasite loads. None of the models were statistically significant; however, infections with Eimeria sp. 3 were the closest to significance, being more frequent in farms with low mining and cattle activity and high dog abundance. This pattern may reflect higher vegetation cover and soil moisture favoring oocyst survival. Further research is needed to disentangle the effects of specific anthropogenic pressures on host–parasite–environment interactions.
Centro de Estudios Parasitológicos y de Vectores
description Environmental stressors, host condition, and parasitic infections are closely linked, as adverse conditions may compromise individual health and increase susceptibility to parasitism. This study evaluated the influence of intrinsic (body condition) and extrinsic host factors (farm, mining activity, cattle load, and dog abundance) on prevalence and parasite load in the Endangered subpopulation of Chaetophractus vellerosus from eastern Buenos Aires Province, Argentina. Fecal samples from 45 individuals were analyzed using coproparasitological techniques, including modified Ritchie sedimentation combined with Ziehl–Neelsen staining and Willis flotation to estimate prevalence, and a McMaster chamber to quantify parasite load. Body condition was estimated using a weight-to-total length index. All samples were parasitized. Oocysts of Eimeria spp. and Cryptosporidium sp., as well as helminth eggs (Cestoda and Nematoda), were identified. Aspidodera spp., Eimeria sp. 1, and Eimeria sp. 4 showed the highest prevalences, while Eimeria spp. exhibited the highest parasite loads. None of the models were statistically significant; however, infections with Eimeria sp. 3 were the closest to significance, being more frequent in farms with low mining and cattle activity and high dog abundance. This pattern may reflect higher vegetation cover and soil moisture favoring oocyst survival. Further research is needed to disentangle the effects of specific anthropogenic pressures on host–parasite–environment interactions.
publishDate 2026
dc.date.none.fl_str_mv 2026-03-16
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
Articulo
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.1007/s00436-026-08654-w
http://sedici.unlp.edu.ar/handle/10915/193592
url https://doi.org/10.1007/s00436-026-08654-w
http://sedici.unlp.edu.ar/handle/10915/193592
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://link.springer.com/article/10.1007/s00436-026-08654-w#rightslink
info:eu-repo/semantics/altIdentifier/issn/1432-1955
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
eu_rights_str_mv openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc-nd/4.0/
Creative Commons Attribution-NonCommercial-NoDerivatives 4.0 International (CC BY-NC-ND 4.0)
dc.format.none.fl_str_mv application/pdf
dc.source.none.fl_str_mv reponame:SEDICI (UNLP)
instname:Universidad Nacional de La Plata
instacron:UNLP
reponame_str SEDICI (UNLP)
collection SEDICI (UNLP)
instname_str Universidad Nacional de La Plata
instacron_str UNLP
institution UNLP
repository.name.fl_str_mv SEDICI (UNLP) - Universidad Nacional de La Plata
repository.mail.fl_str_mv alira@sedici.unlp.edu.ar
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