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(Referência obtida automaticamente do Web of Science, por meio da informação sobre o financiamento pela FAPESP e o número do processo correspondente, incluída na publicação pelos autores.)

Phylogeography of the spider Araneus venatrix (Araneidae) suggests past connections between Amazon and Atlantic rainforests

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Peres, Elen A. ; Silva, Marcio J. ; Solferini, Vera N.
Número total de Autores: 3
Tipo de documento: Artigo Científico
Fonte: Biological Journal of the Linnean Society; v. 121, n. 4, p. 771-785, AUG 2017.
Citações Web of Science: 4

Several pieces of evidence support the hypothesis that the Amazon and Atlantic rainforests were connected in the past, but the details of this historical disjunction are poorly understood. Here, we investigated ancient events related to these biomes' biogeography by performing a phylogeographical analysis of Araneus venatrix, a spider distributed in Neotropical humid environments. We sequenced one mitochondrial and one nuclear DNA region of samples from 30 locations throughout the A. venatrix distribution and estimated the genetic structure, diversity and demographic patterns in the species. Additionally, we inferred the phylogenetic relationships, divergence times and ancestral areas of A. venatrix lineages. We detected a deep split (Late Miocene/Early Pliocene) between two A. venatrix clades, separating most of the southern Atlantic forest's populations from all other samples. Within-clade diversifications are more recent (Pleistocene), and geographically associated mitochondrial lineages were identified in the widespread clade (in the Amazon, northern Atlantic forest and south-central region of Brazil). The biogeographical analysis indicated that the widespread clade originated in Cerrado gallery forests and suggested recent dispersal events through two putative connections between rainforests (through Caatinga and through southern Cerrado). Our data suggest that both Tertiary and Quaternary events influenced rearrangements of Neotropical rainforests. Additionally, the results indicate that the processes underlying the biomes' diversification are not independent, highlighting the relevance of studying taxa broadly distributed in the Neotropics. (AU)

Processo FAPESP: 10/50624-2 - Filogeografia de Araneus guttatus (Arachnida: Araneae)
Beneficiário:Elen Arroyo Peres
Linha de fomento: Bolsas no Brasil - Doutorado
Processo FAPESP: 12/02526-7 - Filogeografia e estrutura genética populacional em espécies de aranhas (Arachnida, Araneae)
Beneficiário:Vera Nisaka Solferini
Linha de fomento: Auxílio à Pesquisa - Regular