Divergence of tropical pitvipers promoted by independent colonization events of dry montane Andean habitats

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dc.careerEscuela de Ciencias Biológicases
dc.category.authorprincipales
dc.contributor.authorTorres Carvajal, Lenin Omar
dc.contributor.correspondingTorres Carvajal, Lenin Omares
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:50:03Z
dc.date.available2023-11-04T21:50:03Z
dc.date.issued2019
dc.dedication.authorTCes
dc.description.abstractAIM: A poorly explored feature of the origin and maintenance of Neotropical biodiversity is how the evolutionary dynamics of colonization and differentiation in relation to lowland and highland habitats has impacted lineage formation. Most speciation models for this region have focused on vicariant events, whereas the need to assess the influence of demographic processes has been recognized only recently. We evaluate if the origin of Andean montane lineages of terciopelo pitvipers is explained by either of two historical processes that represent distinct phylogeographic mechanisms: differentiation by isolation within the highlands or different dispersal events from the lowlands. LOCATION: Western Ecuador. TAXON: Terciopelo pitvipers (Bothrops asper species complex). METHODS: We use genomic data and genetic clustering analyses, evaluation of historical migration between genetic clusters and demographic model selection to investigate recent diversification events in South America using a vertebrate group rarely explored in phylogeographic studies: tropical Andean snakes. Specifically, the origin of two Ecuadorian montane lineages of terciopelo pitvipers was evaluated given ambiguous phylogenetic relationships with the presumably ancestral Pacific lowland lineage. RESULTS: Discrepancies of evolutionary relationships previously obtained with tree‐like methods are resolved through the use of modelling approaches. We found strong support for the independent orig in of montane lineages based on topologies inferred by maximum‐likelihood trees and modelling approaches that take into account possible gene flow. This suggests dispersal rather than in‐situ differentiation as the most likely mechanism by which the montane linages originated. MAIN CONCLUSIONS: Recent large‐scale studies have found support for identifying dispersal events as important drivers of diversification in the Neotropical region. We contribute to these ideas by identifying a fine‐scale case in a rarely studied group of animals ‐Andean snakes‐ in which river valleys acted as an entrance for the upward colonization of montane dry habitats and subsequent ecological diversification.es
dc.facultyCiencias Exactas y Naturaleses
dc.id.author1712335916es
dc.id.type1es
dc.identifier.doihttp://dx.doi.org/10.1111/jbi.13661es
dc.identifier.issn0305-0270
dc.identifier.urihttps://agris.fao.org/agris-search/search.do?recordID=US201900404841es
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/6321
dc.indexed.databaseOtheres
dc.list.authorsSalazar-Valenzuela, D., Kuch, U., Torres, O., Valencia, J., y Gibbs, H.es
dc.magazine.pageRange1-14es
dc.magazine.titleJournal of Biogeographyes
dc.magazine.volumeChapter46(8)es
dc.rightsOpenAccesses
dc.statepublishedes
dc.subjectFilogeniaes
dc.subjectBiodiversidades
dc.subjectGenómicaes
dc.subjectSerpienteses
dc.titleDivergence of tropical pitvipers promoted by independent colonization events of dry montane Andean habitatses
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