| Texto completo | |
| Autor(es): |
de Macedo Bartoleti, Luiz Filipe
[1]
;
Peres, Elen Arroyo
[2]
;
Mascarenhas Fontes, Fernanda von Hertwig
[1]
;
da Silva, Marcio Jose
[3]
;
Solferini, Vera Nisaka
[4, 1]
Número total de Autores: 5
|
| Afiliação do(s) autor(es): | [1] Univ Estadual Campinas, Inst Biol, Dept Genet Evolut Microbiol & Immunol, Campinas, SP - Brazil
[2] Univ Sao Paulo, Inst Biosci, Dept Zool, Sao Paulo - Brazil
[3] Univ Estadual Campinas, Ctr Mol Biol & Genet Engn, Campinas, SP - Brazil
[4] Univ Estadual Campinas, Ctr Computat Engn & Sci, Campinas, SP - Brazil
Número total de Afiliações: 4
|
| Tipo de documento: | Artigo Científico |
| Fonte: | Journal of Biogeography; v. 45, n. 6, p. 1246-1260, JUN 2018. |
| Citações Web of Science: | 1 |
| Resumo | |
Aim: Amazonia and Atlantic Rain Forests share a common biogeographical origin and have an interconnected history that includes the drier biomes between them. It is not clear if the establishment of the South American Dry Diagonal promoted isolation between these forests or if connections between them have occurred after this event. We sought to investigate biotic diversification and geographical evolution in these biomes with a phylogeographical study of Nephila clavipes, a rain forest dwelling spider. Location: South America. Methods: We collected 320 individuals from 49 sites and sequenced one mitochondrial and two nuclear DNA regions. We analysed the genetic diversity, structure and demography, did phylogenetic inferences, estimated divergence times, inferred ancestral areas and applied a model-based approach to test competitive hypotheses on the species' evolution. Results: An ancient split, coincident with the Central Cordillera final uplift, segregated a Trans-Andean Colombian lineage from the others. Four lineages occur in Brazil, with a Pleistocene divergence: one in Amazonia, one in the northern and southern Atlantic Forest and two associated with the Dry Diagonal, but also reaching the Southern Atlantic Forest and Amazonia. The biogeographical analysis indicated that some lineages have expanded their ranges along the Pleistocene. Main conclusions: Pleistocene connections of Amazonia and Atlantic rain forests through the central part of the Cerrado were supported. No phylogeographical break was detected along the Atlantic Forest. Geological and climatic events contributed to lineage diversification in N. clavipes. Studying widely distributed species is primary in unveiling evolutionary patterns in highly complex regions. (AU) | |
| Processo FAPESP: | 13/08293-7 - CECC - Centro de Engenharia e Ciências Computacionais |
| Beneficiário: | Munir Salomao Skaf |
| Modalidade de apoio: | Auxílio à Pesquisa - Centros de Pesquisa, Inovação e Difusão - CEPIDs |