Arid
DOI10.1186/s12862-016-0779-9
Demographical history and palaeodistribution modelling show range shift towards Amazon Basin for a Neotropical tree species in the LGM
Vitorino, Luciana Cristina1; Lima-Ribeiro, Matheus S.2; Terribile, Levi Carina2; Collevatti, Rosane G.1
通讯作者Collevatti, Rosane G.
来源期刊BMC EVOLUTIONARY BIOLOGY
ISSN1471-2148
出版年2016
卷号16
英文摘要

Background: We studied the phylogeography and demographical history of Tabebuia serratifolia (Bignoniaceae) to understand the disjunct geographical distribution of South American seasonally dry tropical forests (SDTFs). We specifically tested if the multiple and isolated patches of SDTFs are current climatic relicts of a widespread and continuously distributed dry forest during the last glacial maximum (LGM), the so called South American dry forest refugia hypothesis, using ecological niche modelling (ENM) and statistical phylogeography. We sampled 235 individuals of T. serratifolia in 17 populations in Brazil and analysed the polymorphisms at three intergenic chloroplast regions and ITS nuclear ribosomal DNA.


Results: Coalescent analyses showed a demographical expansion at the last c. 130 ka (thousand years before present). Simulations and ENM also showed that the current spatial pattern of genetic diversity is most likely due to a scenario of range expansion and range shift towards the Amazon Basin during the colder and arid climatic conditions associated with the LGM, matching the expected for the South American dry forest refugia hypothesis, although contrasting to the Pleistocene Arc hypothesis. Populations in more stable areas or with higher suitability through time showed higher genetic diversity. Postglacial range shift towards the Southeast and Atlantic coast may have led to spatial genome assortment due to leading edge colonization as the species tracks suitable environments, leading to lower genetic diversity in populations at higher distance from the distribution centroid at 21 ka.


Conclusion: Haplotype sharing or common ancestry among populations from Caatinga in Northeast Brazil, Atlantic Forest in Southeast and Cerrado biome and ENM evince the past connection among these biomes.


英文关键词Bignoniaceae Dry forest refugia Ecological niche modelling Phylogeography Pleistocene arc hypothesis Quaternary climatic changes
类型Article
语种英语
国家Brazil
收录类别SCI-E
WOS记录号WOS:000386026100003
WOS关键词DRY TROPICAL FORESTS ; MAXIMUM-LIKELIHOOD ; BRAZILIAN CERRADO ; ATLANTIC FOREST ; SOUTH-AMERICA ; VEGETATION ; CLIMATE ; PHYLOGEOGRAPHY ; UNCERTAINTIES ; CONSEQUENCES
WOS类目Evolutionary Biology ; Genetics & Heredity
WOS研究方向Evolutionary Biology ; Genetics & Heredity
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/191852
作者单位1.Univ Fed Goias, ICB, Lab Genet & Biodiversidade, Cx P 131, BR-74001970 Goiania, Go, Brazil;
2.UFG, Lab Macroecol, Campus Jatai,Cx P 03, BR-75801615 Jatai, Go, Brazil
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GB/T 7714
Vitorino, Luciana Cristina,Lima-Ribeiro, Matheus S.,Terribile, Levi Carina,et al. Demographical history and palaeodistribution modelling show range shift towards Amazon Basin for a Neotropical tree species in the LGM[J],2016,16.
APA Vitorino, Luciana Cristina,Lima-Ribeiro, Matheus S.,Terribile, Levi Carina,&Collevatti, Rosane G..(2016).Demographical history and palaeodistribution modelling show range shift towards Amazon Basin for a Neotropical tree species in the LGM.BMC EVOLUTIONARY BIOLOGY,16.
MLA Vitorino, Luciana Cristina,et al."Demographical history and palaeodistribution modelling show range shift towards Amazon Basin for a Neotropical tree species in the LGM".BMC EVOLUTIONARY BIOLOGY 16(2016).
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