Interrelationships among feather mercury content, body condition and feather corticosterone in a Neotropical migratory bird, the Purple Martin (Progne subis subis)

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dc.contributorMuseu Biológicopt_BR
dc.contributor.authorBranco, Jonathan M.pt_BR
dc.contributor.authorHingst-Zaher, Erikapt_BR
dc.contributor.authorJordan-Ward, Reneept_BR
dc.contributor.authorDillon, Daniellept_BR
dc.contributor.authorSiegrist, Joept_BR
dc.contributor.authorFischer, Jason D.pt_BR
dc.contributor.authorSchiesari, Luispt_BR
dc.contributor.authorHippel, Frank A. vonpt_BR
dc.contributor.authorBuck, C. Lorenpt_BR
dc.identifier.citationBranco JM., Hingst-Zaher E, Jordan-Ward R, Dillon D, Siegrist J, Fischer JD., et al. Interrelationships among feather mercury content, body condition and feather corticosterone in a Neotropical migratory bird, the Purple Martin (Progne subis subis). Environ Pollut. 2022 Dec; 314:120284. doi:10.1016/j.envpol.2022.120284.pt_BR
dc.description.abstractPurple Martins (Progne subis) are migratory birds that breed in North America and overwinter and complete their molt in South America. Many of the breeding populations are declining. The eastern North American subspecies of Purple Martin (P. subis subis) comprises >90% of all Purple Martins. This subspecies overwinters and molts in the Amazon Basin, a region that is high in mercury (Hg) contamination, which raises the possibility that observed declines in Purple Martins could be linked to Hg exposure. Exposure to Hg results in numerous and systemic negative health outcomes, including endocrine disruption. Corticosterone (CORT) is a primary modulator of the stress and metabolic axes of vertebrates; thus, it is important in meeting metabolic and other challenges of migration. Because feathers accumulate Hg and hormones while growing, quantification of Hg and CORT in feathers provides an opportunity to retrospectively assess Hg exposure and adrenal activity of birds using minimally invasive methods. We evaluated interrelationships among concentrations of total Hg (THg) and CORT in feathers that grew in the Amazon Basin and body condition (mass, fat score) of these birds in North America. Concentrations of THg in Purple Martin feathers ranged from 1.103 to 8.740 μg/g dw, levels associated with negative physiological impacts in other avian species. Concentrations of CORT did not correlate with THg concentration at the time of feather growth. However, we found evidence that THg concentration may negatively impact the ability of Purple Martins to accumulate fat, which could impair migratory performance and survivorship due to the high energy requirements of migration. This finding suggests potential carryover effects of Hg contamination at the wintering grounds in the Amazon to the summer breeding grounds in North America.pt_BR
dc.description.sponsorship(CNPq) Conselho Nacional de Desenvolvimento Científico e Tecnológicopt_BR
dc.description.sponsorship(NSF) National Science Foundationpt_BR
dc.relation.ispartofEnvironmental Pollutionpt_BR
dc.rightsRestricted accesspt_BR
dc.titleInterrelationships among feather mercury content, body condition and feather corticosterone in a Neotropical migratory bird, the Purple Martin (Progne subis subis)pt_BR
dc.contributor.external(USP) Universidade de São Paulopt_BR
dc.contributor.external(NAU) Northern Arizona Universitypt_BR
dc.contributor.external(PMCA) Purple Martin Conservation Associationpt_BR
dc.contributor.externalDisney's Animals, Science and Environmentpt_BR
dc.contributor.externalUniversity of Arizonapt_BR
dc.subject.keywordAmazon basinpt_BR
dc.subject.keywordavian toxicologypt_BR
dc.subject.keywordendocrine disruptorspt_BR
dc.subject.keywordenvironmental toxicologypt_BR
dc.relation.ispartofabbreviatedEnviron Pollutpt_BR
dc.identifier.citationabntv. 314, 120284, dez. 2022pt_BR
dc.identifier.citationvancouver2022 Dec; 314:120284pt_BR
dc.contributor.butantanHingst-Zaher, Erika|:Pesquisador|:Museu Biológicopt_BR
dc.sponsorship.butantan(CNPq) Conselho Nacional de Desenvolvimento Científico e Tecnológico¦¦pt_BR
dc.sponsorship.butantan(NSF) National Science Foundation¦¦pt_BR
dc.description.internalPolítica de depósito: liberado apenas preprintpt_BR
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