The influence of Pleistocene glaciations on Chacoan fauna: Genetic structure and historical demography of an endemic frog of the South American Gran Chaco
| العنوان: | The influence of Pleistocene glaciations on Chacoan fauna: Genetic structure and historical demography of an endemic frog of the South American Gran Chaco |
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| المؤلفون: | Diego Baldo, Célio F. B. Haddad, Flavia Netto, Francisco Brusquetti |
| المساهمون: | Instituto de Investigación Biológica Del Paraguay, Dirección de Coordinación Ejecutiva, Universidad Nacional de Misiones, Universidade Estadual Paulista (Unesp) |
| المصدر: | Scopus Repositório Institucional da UNESP Universidade Estadual Paulista (UNESP) instacron:UNESP |
| سنة النشر: | 2019 |
| مصطلحات موضوعية: | Pleistocene, biology, Ecology, Leptodactylus bufonius, Fauna, Leptodactylidae, semi-arid biome, Historical demography, phylogeography, biology.organism_classification, Phylogeography, natural history, South american, Genetic structure, Anura, Ecology, Evolution, Behavior and Systematics |
| الوصف: | Made available in DSpace on 2019-10-06T16:20:37Z (GMT). No. of bitstreams: 0 Previous issue date: 2019-02-28 The Chaco is a semi-arid biome that has been influenced by Miocene marine introgressions and relatively recent glaciations. Marine introgressions have been suggested as an important driver of biodiversity for some Chacoan frog species, but the effects of Pleistocene glaciations have not previously been assessed. We used mitochondrial and nuclear markers to estimate the genetic structure and demographic history of Leptodactylus bufonius, a frog species widely distributed in the Chaco, to test if Pleistocene glaciations have had any influence on its evolutionary history. We found evidence to support recent range and demographic expansions and current gene flow among populations. Expansions may have occurred after the most extensive glaciations (Greatest Patagonian Glaciation and the coldest Pleistocene glaciation, 1-0.7 Mya) of the Late Pleistocene. Current gene flow is maintained by short-distance dispersal that follows a stepping-stone model allowing high connectivity, even among distant populations. Nevertheless, we cannot exclude some influence of large population sizes and retention of ancestral polymorphism in explaining the lack of population structure that we found. The genetic pattern of L. bufonius is concordant with the diversification of frogs in other semi-arid regions of the world. Instituto de Investigación Biológica Del Paraguay, Del Escudo 1607 Itaipu Binacional División de Áreas Protegidas Dirección de Coordinación Ejecutiva, Av. Monseñor Rodriguez 150 Instituto de Biología Subtropical (IBS CONICET-UNaM) Laboratorio de Genética Evolutiva Facultad de Ciencias Exactas Universidad Nacional de Misiones, Félix de Azara 1552 Departamento de Zoologia Instituto de Biociências e Centro de Aquicultura (CAUNESP) UNESP - Universidade Estadual Paulista, Caixa Postal 199 Departamento de Zoologia Instituto de Biociências e Centro de Aquicultura (CAUNESP) UNESP - Universidade Estadual Paulista, Caixa Postal 199 |
| اللغة: | English |
| URL الوصول: | https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c23b5796d35d86b8e8bef682fa78a13e |
| حقوق: | OPEN |
| رقم الأكسشن: | edsair.doi.dedup.....c23b5796d35d86b8e8bef682fa78a13e |
| قاعدة البيانات: | OpenAIRE |
| الوصف غير متاح. |