Amazon diversification and cross- Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae).

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dc.careerCiencias Biológicases
dc.category.authorprincipalen_US
dc.contributor.authorValencia Reyes, Luis Renato
dc.contributor.correspondingScotti-Saintagne, Caroline
dc.countryEcuadores
dc.date.accessioned2023-11-04T21:31:46Z
dc.date.available2023-11-04T21:31:46Z
dc.date.issued2012
dc.dedication.authorTCes
dc.description.abstractAim: The phylogeographical history of Neotropical species can be difficult to reconstruct because of superimposed Neogene and Quaternary histories, and because of taxonomic uncertainty. We analysed range-wide genetic diversity in a widespread pioneer tree species, Jacaranda copaia (Aubl.) D. Don, to characterize phylogeographical structure, date the evolutionary relationships among lineages, and evaluate the role of dispersal and vicariance in establishing the present geographical range. Location: Guiana Shield; central, southern and western Amazon Basin; Chocó region; Central America. Methods: We analysed nine nuclear simple sequence repeat loci (nuSSR), eight chloroplast SSRs (cpSSR), and two cpDNA intergenic sequences in 341 adult trees. Genetic differentiation at nuSSRs was inferred using Bayesian clustering. Dating of chloroplast lineage divergence was obtained using a range of published mutation rates and Bayesian coalescence analyses. Population divergence dating was performed using an isolation-with-migration model for eight loci (one cp sequence and seven nuSSRs). Results: Nuclear SSR variation identified three geographically overlapping clusters (nu-1, nu-2, nu-3). Twelve cpDNA haplotypes were clustered into two haplogroups (cp-1, cp-2) with the central Amazon harbouring the highest diversity. Molecular dating analysis suggests that cpDNA haplotype diversification started around the end of the Pliocene (2.61 Ma on average), whereas population divergence was more recent and occurred during the mid-Quaternary (point estimates between 357 and 436 ka). Main conclusions: The genetic variation of J. copaia in the Neotropics was shaped mainly by Pleistocene events. Chloroplast diversity did not display the expected cis/trans Andean disjunction, indicating recent dispersal. Nuclear variation revealed that separate regions share a recent history, with a centre of diversity in the central Amazon Basin. The geographical pattern of diversity is congruent with the distribution of the two subspecies, J. copaia copaia and J. copaia spectabilis, and evidence of nuSSR admixture between the two taxa supports their classification as subspecies.en_US
dc.facultyCiencias Exactas y Naturaleses
dc.id.author1706673199
dc.id.type1
dc.identifier.doi10.1111/j.1365-2699.2012.02797.x
dc.identifier.issn13652699 - 03050270
dc.identifier.urihttps://repositorio.puce.edu.ec/handle/123456789/4907
dc.identifier.urihttp://onlinelibrary.wiley.com/doi/10.1111/j.1365-2699.2012.02797.x/full
dc.indexed.databaseOtheres
dc.language.isoen
dc.list.authorsScotti, C., Dick, C., Caron, H., Vendramin, G., Troispoux, V., Sire, P., Casalis, M., Buonamici, A., Valencia, R., et al.
dc.magazine.pageRange707–719
dc.magazine.titleJournal of Biogeographyen_US
dc.magazine.volumeChapter40 (4)
dc.rightsClosedAccessen
dc.statepublisheden_US
dc.subjectAmazoniaes
dc.subjectBignoniaceae centre of diversityes
dc.subjectDispersales
dc.subjectHistorical biogeographyes
dc.subjectNeotropicses
dc.subjectPhylogeographyes
dc.subjectPleistocenees
dc.subjectTropical forestes
dc.subjectVicariancees
dc.subjectAmazonia
dc.subjectBignoniaceae centre of diversity
dc.subjectDispersal
dc.subjectHistorical biogeography
dc.subjectNeotropics
dc.subjectPhylogeography
dc.subjectPleistocene
dc.subjectTropical forest
dc.subjectVicariance
dc.titleAmazon diversification and cross- Andean dispersal of the widespread Neotropical tree species Jacaranda copaia (Bignoniaceae).en_US
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