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Dissecting Tick Vectors Biosystematics and Symbionts Transmission Potential

datacite.subject.fosCiências Naturais::Ciências Biológicaspt_PT
dc.contributor.advisorDias, Deodália
dc.contributor.advisorRosa, Fernanda
dc.contributor.authorCoimbra-Dores, Maria João
dc.date.accessioned2021-09-30T17:23:32Z
dc.date.available2022-09-01T00:30:47Z
dc.date.issued2020-12
dc.date.submitted2020-04
dc.description.abstractTicks are one of the main vectors of disease to animals worldwide. Mainly due to anthropogenic impact on our planet, environmental changes are expected to impact tick and tick-borne diseases ecology and distribution. Rhipicephalus ticks are widely distributed throughout Southern Europe. Due to their unclarified taxonomic status, hidden diversity and unclear tick-host-pathogens interactions, assessments regarding the transmission potential of different species lineages and populations are not routinely performed. Following the premise that different tick species have different potential to transmit tick-borne diseases, the main aim of this study was to clarify if different Rhipicephalus sanguineus s.l. lineages or species distributed throughout Southern Europe show a differentiated potential for pathogens transmission to their hosts. First, tick collections from European and African countries were used to assess Rhipicephalus genus diversity using morphologic and genetic-based methods. Screening techniques were then applied to investigate their microbiota composition. By last, a spatio-temporal variation study of tick-borne symbionts with different transmission routes was performed in a four years database from the Netherlands to assess if the bacteria composition of ticks could affect pathogens and endosymbionts prevalence in the vector. Regarding the R. sanguineus s.l. diversity, our results evidence that the temperate lineage distributed in Southern Europe has at least two different morphotypes: “R. sanguineus” and “R. turanicus”. This result supports that a direct correlation between morphotype and transmission potential cannot be made based on the traditional paradigm, and additional methods should be used to confirm taxa identifications. Furthermore, our findings suggest that Coxiella-like endosymbiont diversity follow the Rhipicephalus species and lineages phylogeny, supporting not only a differentiated co-evolution as a different microbiota composition between lineages. By last, the results evidence significant associations between pathogens and endosymbionts, suggesting that microbiota composition can affect tick-borne pathogens prevalence within a tick, which ultimately could affect their transmission potential.pt_PT
dc.identifier.tid101522835pt_PT
dc.identifier.urihttp://hdl.handle.net/10451/49760
dc.language.isoengpt_PT
dc.relationCentre for Environmental and Marine Studies
dc.subjectRhipicephalus sanguineus s.l. lineagespt_PT
dc.subjectBiosystematicspt_PT
dc.subjectCo-phylogenypt_PT
dc.subjectStatistical modelspt_PT
dc.subjectMicrobiota compositionpt_PT
dc.titleDissecting Tick Vectors Biosystematics and Symbionts Transmission Potentialpt_PT
dc.typedoctoral thesis
dspace.entity.typePublication
oaire.awardTitleCentre for Environmental and Marine Studies
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/FARH/45983/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FAMB%2F50017%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/154761/PT
oaire.fundingStreamFARH
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream6817 - DCRRNI ID
person.familyNameCoimbra-Dores
person.givenNameMaria João
person.identifier.orcid0000-0001-8495-5995
person.identifier.ridN-8324-2015
person.identifier.scopus-author-id57191868289
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typedoctoralThesispt_PT
relation.isAuthorOfPublication071521e6-3a63-4d72-bef2-12b3605eae0a
relation.isAuthorOfPublication.latestForDiscovery071521e6-3a63-4d72-bef2-12b3605eae0a
relation.isProjectOfPublication70c5b3ae-2087-46a2-bfc2-31eabe963141
relation.isProjectOfPublicatione002c5de-670c-47f3-a432-01e9ea62df4f
relation.isProjectOfPublication3bfb378a-6432-44c2-a78b-1d6914aa34b5
relation.isProjectOfPublication.latestForDiscovery70c5b3ae-2087-46a2-bfc2-31eabe963141
thesis.degree.nameTese de doutoramento, Biologia e Ecologia das Alterações Globais (Biologia Ambiental e Saúde), Universidade de Lisboa, Faculdade de Ciências, 2020pt_PT

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