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The importance of wildlife health on zoonotic bacteria transmission: interactions between Borrelia burgdorferi s.l. and its avian hosts

2019-09-27Conference object Restricted access
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dc.contributor.authorNorte, A.C.
dc.contributor.authorHeylen, D.
dc.contributor.authorAraújo, P.M.
dc.contributor.authorPascoal da Silva, L.
dc.contributor.authorSprong, H.
dc.contributor.authorKrawczyk, A.
dc.contributor.authorCostantini, D.
dc.contributor.authorEens, M.
dc.contributor.authorNúncio, M.S.
dc.contributor.authorRamos, J.A.
dc.contributor.authorLopes de Carvalho, I.
dc.date.accessioned2020-05-26T10:23:04Z
dc.date.available2020-05-26T10:23:04Z
dc.date.issued2019-09-27
dc.description.abstractBorrelia burgdorferi sensu lato (s.l.) is a tick-borne zoonotic agent maintained in enzootic cycles in nature by vertebrate reservoir hosts, including mammals, lizards and birds. To understand the eco-epidemiology of Lyme borreliosis it is necessary to evaluate the relationships between Borrelia genospecies and vertebrate reservoir hosts. We surveyed Borrelia infection prevalence in avian hosts and using wild birds as models, we assessed the physiological impact of infection in reservoir hosts and how exposure to stress could affect hosts’ infectivity to vector ticks. This helps to understand how these host-parasite interactions may affect tick-borne zoonotic agents’ circulation and transmission, and, ultimately, disease risk. Thrushes (Turdus spp.) were the most important birds in the enzootic cycle of Borrelia. The diversity of Borrelia genospecies detected in ticks feeding on birds was high, and the most common genospecies was B. garinii, a pathogenic genospecies. The ubiquitous blackbird Turdus merula successfully transmitted B. turdi, B. valaisiana and B. burgdorferi s.s. to vector ticks in laboratory conditions. There was no evidence that exposure to stress increased infectivity of wild avian hosts to vector ticks in an experiment performed in captivity. However, oxidative balance (protein carbonyls and glutathione peroxidase levels) of naïve blackbirds was affected by experimental infection with Borrelia, suggesting that these bacteria may inflict non-negligible physiological harm on its natural reservoir hosts with potential impact on transmission success.pt_PT
dc.description.versionN/Apt_PT
dc.identifier.urihttp://hdl.handle.net/10400.18/6824
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc/4.0/pt_PT
dc.subjectBorrelia burgdorferi S.I.pt_PT
dc.subjectZoonotic Bacteriapt_PT
dc.subjectavian hostspt_PT
dc.subjectInfecções Sistémicas e Zoonosespt_PT
dc.titleThe importance of wildlife health on zoonotic bacteria transmission: interactions between Borrelia burgdorferi s.l. and its avian hostspt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.citation.conferencePlaceLisboa, Portugalpt_PT
oaire.citation.titleInternational Congress on Environmental Health ( ICEH 2019) "New" Challenges for the Future, 25-27 setembro 2019pt_PT
rcaap.rightsrestrictedAccesspt_PT
rcaap.typeconferenceObjectpt_PT

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