Integrating paleodistribution models and phylogeography in the grass-cutting ant Acromyrmex striatus (Hymenoptera: Formicidae) in southern lowlands of South America.

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dc.contributor.authorCristiano, Maykon Passos
dc.contributor.authorCardoso, Danon Clemes
dc.contributor.authorSalomão, Tânia Maria Fernandes
dc.contributor.authorHeinze, Jürgen
dc.date.accessioned2016-08-01T19:16:11Z
dc.date.available2016-08-01T19:16:11Z
dc.date.issued2016
dc.description.abstractPast climate changes often have influenced the present distribution and intraspecific genetic diversity of organisms. The objective of this study was to investigate the phylogeography and historical demography of populations of Acromyrmex striatus (Roger, 1863), a leaf-cutting ant species restricted to the open plains of South America. Additionally, we modeled the distribution of this species to predict its contemporary and historic habitat. From the partial sequences of the mitochondrial gene cytochrome oxidase I of 128 A. striatus workers from 38 locations we estimated genetic diversity and inferred historical demography, divergence time, and population structure. The potential distribution areas of A. striatus for current and quaternary weather conditions were modeled using the maximum entropy algorithm. We identified a total of 58 haplotypes, divided into five main haplogroups. The analysis of molecular variance (AMOVA) revealed that the largest proportion of genetic variation is found among the groups of populations. Paleodistribution models suggest that the potential habitat of A. striatus may have decreased during the Last Interglacial Period (LIG) and expanded during the Last Maximum Glacial (LGM). Overall, the past potential distribution recovered by the model comprises the current potential distribution of the species. The general structuring pattern observed was consistent with isolation by distance, suggesting a balance between gene flow and drift. Analysis of historical demography showed that populations of A. striatus had remained constant throughout its evolutionary history. Although fluctuations in the area of their potential historic habitat occurred during quaternary climate changes, populations of A. striatus are strongly structured geographically. However, explicit barriers to gene flow have not been identified. These findings closely match those in Mycetophylax simplex, another ant species that in some areas occurs in sympatry with A. striatus. Ecophysiological traits of this species and isolation by distance may together have shaped the phylogeographic pattern.pt_BR
dc.identifier.citationCRISTIANO, M. P. et al. Integrating paleodistribution models and phylogeography in the grass-cutting ant Acromyrmex striatus (Hymenoptera: Formicidae) in southern lowlands of South America. Plos One, v. 11, p. e0146734, 2016. Disponível em: <http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0146734>. Acesso em: 11 jul. 2016.pt_BR
dc.identifier.doihttps://doi.org/10.1371/journal.pone.0146734
dc.identifier.issn1932-6203
dc.identifier.urihttp://www.repositorio.ufop.br/handle/123456789/6741
dc.language.isoen_USpt_BR
dc.rightsabertopt_BR
dc.rights.licenseThis is an Open Access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly credited. Fonte: o próprio artigo.pt_BR
dc.titleIntegrating paleodistribution models and phylogeography in the grass-cutting ant Acromyrmex striatus (Hymenoptera: Formicidae) in southern lowlands of South America.pt_BR
dc.typeArtigo publicado em periodicopt_BR
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