Associations among MHC genes, latitude, and avian malaria infections in the rufous-collared sparrow (<i>Zonotrichia capensis</i>)

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dc.contributor.authorde Aguilar, Juan Rivero
dc.contributor.authorBarroso, Omar
dc.contributor.authorBonaccorso, Elisa
dc.contributor.authorCadena, Hector
dc.contributor.authorHussing, Lucas
dc.contributor.authorJorquera, Josefina
dc.contributor.authorMartinez, Javier
dc.contributor.authorMartinez-de la Puente, Josue
dc.contributor.authorMarzal, Alfonso
dc.contributor.authorMiranda, Fabiola Leon
dc.contributor.authorMerino, Santiago
dc.contributor.authorMatta, Nubia E.
dc.contributor.authorRamenofsky, Marilyn
dc.contributor.authorRozzi, Ricardo
dc.contributor.authorValeris-Chacin, Carlos E.
dc.contributor.authorVasquez, Rodrigo A.
dc.contributor.authorVianna, Juliana A.
dc.contributor.authorWingfield, John C.
dc.date.accessioned2025-01-20T16:07:50Z
dc.date.available2025-01-20T16:07:50Z
dc.date.issued2024
dc.description.abstractThe major histocompatibility complex (MHC) is a genetic region in jawed vertebrates that contains key genes involved in the immune response. Associations between the MHC and avian malaria infections in wild birds have been observed and mainly explored in the Northern Hemisphere, while a general lack of information remains in the Southern Hemisphere. Here, we investigated the associations between the MHC genes and infections with Plasmodium and Haemoproteus blood parasites along a latitudinal gradient in South America. We sampled 93 rufous-collared sparrows (Zonotrichia capensis) individuals from four countries, Colombia, Ecuador, Peru, and Chile, and estimated MHC-I and MHC-II allele diversity. We detected between 1-4 (MHC-I) and 1-6 (MHC-II) amino acidic alleles per individual, with signs of positive selection. We obtained generalized additive mixed models to explore the associations between MHC-I and MHC-II diversity and latitude. We also explored the relationship between infection status and latitude/biome. We found a non-linear association between the MHC-II amino acidic allele diversity and latitude. Individuals from north Chile presented a lower MHC genetic diversity than those from other locations. We also found an association between deserts and xeric shrublands and a lower prevalence of Haemoproteus parasites. Our results support a lower MHC genetic in arid or semi-arid habitats in the region with the lower prevalence of Haemoproteus parasites.
dc.fuente.origenWOS
dc.identifier.doi10.1002/ece3.11634
dc.identifier.issn2045-7758
dc.identifier.urihttps://doi.org/10.1002/ece3.11634
dc.identifier.urihttps://repositorio.uc.cl/handle/11534/90027
dc.identifier.wosidWOS:001271765300001
dc.issue.numero7
dc.language.isoen
dc.revistaEcology and evolution
dc.rightsacceso restringido
dc.subjecthaemosporidian parasites
dc.subjectmajor histocompatibility complex
dc.subjectparasite-mediated selection
dc.subject.ods03 Good Health and Well-being
dc.subject.odspa03 Salud y bienestar
dc.titleAssociations among MHC genes, latitude, and avian malaria infections in the rufous-collared sparrow (<i>Zonotrichia capensis</i>)
dc.typeartículo
dc.volumen14
sipa.indexWOS
sipa.trazabilidadWOS;2025-01-12
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