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Title: Evolutionary history of the little fire ant Wasmannia auropunctata before global invasion: Inferring dispersal patterns, niche requirements and past and present distribution within its native range
Authors: Chifflet, Lucila
Rodriguero, Marcela S.
Calcaterra, Luis Alberto
Rey, Olivier
Dinghi, Pablo A.
Baccaro, Fabricio Beggiato
Souza, Jorge Luiz Pereira
Follett, Peter A.
Confalonieri, Viviana Andrea
Keywords: Adaptation
Bayesian Analysis
Biological Invasion
Common Ancestry
Genetic Differentiation
Invasive Species
Dna, Mitochondrial
Niche Partitioning
Range Expansion
Wasmannia Auropunctata
Genetic Marker
Dna, Mitochondrial
Behavior, Animals
Animals Dispersal
Genetic Marker
Introduced Species
Animals Distribution
Biological Evolution
Dna, Mitochondrial
Genetic Markers
Homing Behavior
Introduced Species
Issue Date: 2016
metadata.dc.publisher.journal: Journal of Evolutionary Biology
metadata.dc.relation.ispartof: Volume 29, Número 4, Pags. 790-809
Abstract: The evolutionary history of invasive species within their native range may involve key processes that allow them to colonize new habitats. Therefore, phylogeographic studies of invasive species within their native ranges are useful to understand invasion biology in an evolutionary context. Here we integrated classical and Bayesian phylogeographic methods using mitochondrial and nuclear DNA markers with a palaeodistribution modelling approach, to infer the phylogeographic history of the invasive ant Wasmannia auropunctata across its native distribution in South America. We discuss our results in the context of the recent establishment of this mostly tropical species in the Mediterranean region. Our Bayesian phylogeographic analysis suggests that the common ancestor of the two main clades of W. auropunctata occurred in central Brazil during the Pliocene. Clade A would have differentiated northward and clade B southward, followed by a secondary contact beginning about 380 000 years ago in central South America. There were differences in the most suitable habitats among clades when considering three distinct climatic periods, suggesting that genetic differentiation was accompanied by changes in niche requirements, clade A being a tropical lineage and clade B a subtropical and temperate lineage. Only clade B reached more southern latitudes, with a colder climate than that of northern South America. This is concordant with the adaptation of this originally tropical ant species to temperate climates prior to its successful establishment in the Mediterranean region. This study highlights the usefulness of exploring the evolutionary history of invasive species within their native ranges to better understand biological invasions. © 2016 European Society for Evolutionary Biology.
metadata.dc.identifier.doi: 10.1111/jeb.12827
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