2021
DOI: 10.1371/journal.pone.0250016
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Potential mammalian species for investigating the past connections between Amazonia and the Atlantic Forest

Abstract: Much evidence suggests that Amazonia and the Atlantic Forest were connected through at least three dispersion routes in the past: the Eastern route, the central route, and the Western route. However, few studies have assessed the use of these routes based on multiple species. Here we present a compilation of mammal species that potentially have dispersed between the two forest regions and which may serve to investigate these connections. We evaluate the present-day geographic distributions of mammals occurring… Show more

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Cited by 11 publications
(4 citation statements)
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“…Based on the recent divergence times obtained for Cerradomys , it is likely that climatic events of the Pleistocene, yielding contraction and expansion of forests, allowed connections between the Atlantic Forest and the Amazon ( Costa, 2003 ; Batalha-Filho et al, 2013 ; Ledo & Colli, 2017 ), forming a barrier and interrupting the gene flow between populations that occupied the central open region. In addition, our results corroborate Tavares, Pessôa & Seuánez (2016) showing that the expansion of the ancestral population that gave rise to C. subflavus and C. goytaca through the Restinga formation may be facilitated by the Cerrado corridor that possibly connected the north of Rio de Janeiro to central Minas Gerais states ( Werneck et al, 2012 ; Machado et al, 2021 ). Posteriorly, climatic oscillation favoured the expansion of the Atlantic Forest, creating a barrier between the population from Restinga ( C. goytaca ) and the population from Minas Gerais ( C. subflavus ).…”
Section: Discussionsupporting
confidence: 85%
“…Based on the recent divergence times obtained for Cerradomys , it is likely that climatic events of the Pleistocene, yielding contraction and expansion of forests, allowed connections between the Atlantic Forest and the Amazon ( Costa, 2003 ; Batalha-Filho et al, 2013 ; Ledo & Colli, 2017 ), forming a barrier and interrupting the gene flow between populations that occupied the central open region. In addition, our results corroborate Tavares, Pessôa & Seuánez (2016) showing that the expansion of the ancestral population that gave rise to C. subflavus and C. goytaca through the Restinga formation may be facilitated by the Cerrado corridor that possibly connected the north of Rio de Janeiro to central Minas Gerais states ( Werneck et al, 2012 ; Machado et al, 2021 ). Posteriorly, climatic oscillation favoured the expansion of the Atlantic Forest, creating a barrier between the population from Restinga ( C. goytaca ) and the population from Minas Gerais ( C. subflavus ).…”
Section: Discussionsupporting
confidence: 85%
“…Such corridors, presently composed of relicts of the ancient large forest block, and including gallery forests of the Cerrado and the brejos of the Caatinga [10,16], changed the view that the DODL is a separated and isolated region from both the Amazon and Atlantic forests [10]. Three major corridors have been proposed (see Fig 1) [10,11,26,35]. The Eastern corridor would have connected the northern Atlantic Forest and eastern Amazon through the Caatinga region; the Central corridor would have been located in central Brazil, in the Cerrado region; and the Western corridor would have been located in southwestern South America, including the Chaco, in western Brazil, Paraguay, Bolivia, and Peru [10].…”
Section: Plos Onementioning
confidence: 99%
“…A recent study, however, suggests more ancient dispersal events through these "young pathways" in the early Miocene [27], 23 to 5 mya. The Western corridor, on the other hand, is hypothesized to be older and more relevant [34,37], despite recent discussions about its importance [35]. The emergence of this corridor was congruent to sea introgressions forming the Pebas system, between 23 and 10 mya [21,38,39], with the expansion of the Amazon basin between 10 and 7 mya [21,38], and with the emergence of the Paraná sea [40,41].…”
Section: Plos Onementioning
confidence: 99%
“…With the new records, the disjunct distribution pattern of M. macconnelli is strikingly similar to what has been observed for other forest-dependent mammals that occur in both the Amazonia and Atlantic Forest. A recent study identified 127 species of mammals that occur in both ecosystems, suggesting them as good candidates for phylogeographic studies that investigate this putative vicariant pattern, but M. macconnelli was not mentioned by the authors (Machado et al 2021).…”
Section: Introductionmentioning
confidence: 99%