Comparative Phylogeography of Birds Across the Tocantins-Araguaia Interfluve Reveals a New Biogeographic Suture in the Amazon Far East

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dc.contributor.author Dornas, Tulio
dc.contributor.author Melo Dantas, Sidnei
dc.contributor.author Araujo-Silva, Lucas Eduardo
dc.contributor.author Morais, Fernando
dc.contributor.author Aleixo, Alexandre
dc.date.accessioned 2022-07-22T16:48:44Z
dc.date.available 2022-07-22T16:48:44Z
dc.date.issued 2022-06-24
dc.identifier.citation Dornas , T , Melo Dantas , S , Araujo-Silva , L E , Morais , F & Aleixo , A 2022 , ' Comparative Phylogeography of Birds Across the Tocantins-Araguaia Interfluve Reveals a New Biogeographic Suture in the Amazon Far East ' , Frontiers in Ecology and Evolution , vol. 10 , 826394 . https://doi.org/10.3389/fevo.2022.826394
dc.identifier.other PURE: 218378417
dc.identifier.other PURE UUID: c9843359-ac7a-4d50-90ce-f70b2f860b77
dc.identifier.other WOS: 000822620800001
dc.identifier.other Scopus: 85134057166
dc.identifier.uri http://hdl.handle.net/10138/346368
dc.description.abstract Few phylogeographic studies have focused on understanding the role of the Tocantins-Araguaia Interfluve (TAI) in the diversification of Amazonian biodiversity. Herein we evaluate the phylogeographic relationships of 14 avian lineages present in the TAI and its two neighboring Amazonian Areas of Endemism: the Xingu (XAE) and Belem (BAE). Four alternative scenarios coupling degree of genetic differentiation and area relationships were tested: (1) populations distributed in TAI, BAE, and XAE are not genetically differentiated from each other (assumed as the null hypothesis); (2) populations from TAI are more closely related to those from BAE; (3) populations from TAI are more closely related to those from XAE; and (4) TAI populations represent independent or endemic lineages not present in either the BAE or XAE. Molecular analyses considered Bayesian Inference methods and Bayesian Information Criterion (BIC) evolutionary models, haplotype sharing and genetic differentiation estimates. We found three distinct phylogeographic patterns: (i) four lineages presented no population structure across XAE, TAI and BAE; (ii) six lineages were represented in the TAI with distinct phylogroups replacing each other between XAE and BAE, but with varying degrees of contact and evidence of gene-flow within the TAI; and (iii) for four lineages, the Tocantins River acted as a barrier isolating BAE phylogroups from those inhabiting both TAI and XAE. These different patterns demonstrate a heterogeneous response to the barrier effects posed by both the Tocantins and Araguaia rivers on the local fauna. Historical geomorphological and hydromorphological factors, such as the presence and absence of paleochannels and anastomosed channel stretches and variations in sedimentation rates support a dynamic history for the Araguaia-Tocantins floodplains, likely accounting for the observed heterogeneity in species' specific responses. Finally, the scenario of phylogeographic breaks and population subdivision recovered herein along the Tocantins and Araguaia rivers, associated with the existence of contact zones and the occurrence of gene flow, define the TAI as hitherto unknown biogeographic suture zone, localized in southeasternmost Amazonia. en
dc.format.extent 14
dc.language.iso eng
dc.relation.ispartof Frontiers in Ecology and Evolution
dc.rights cc_by
dc.rights.uri info:eu-repo/semantics/openAccess
dc.subject 1181 Ecology, evolutionary biology
dc.subject 1184 Genetics, developmental biology, physiology
dc.title Comparative Phylogeography of Birds Across the Tocantins-Araguaia Interfluve Reveals a New Biogeographic Suture in the Amazon Far East en
dc.type Article
dc.contributor.organization Zoology
dc.description.reviewstatus Peer reviewed
dc.relation.doi https://doi.org/10.3389/fevo.2022.826394
dc.relation.issn 2296-701X
dc.rights.accesslevel openAccess
dc.type.version publishedVersion

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