Early and dynamic colonization of Central America drives speciation in Neotropical army ants
Early and dynamic colonization of Central America drives speciation in Neotropical army ants
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中美洲的早期和动态殖民推动了新热带行军蚁的物种形成
DOI:
10.1111/mec.13846
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发表时间:
2017
影响因子:
4.9
通讯作者:
Moreau, Corrie S.
中科院分区:
文献类型:
--
作者:
Winston, Max E.;Kronauer, Daniel J.;Moreau, Corrie S.
The emergence of the Isthmus of Panama is one of the most important events in recent geological history, yet its timing and role in fundamental evolutionary processes remain controversial. While the formation of the isthmus was complete around 3 million years ago (Ma), recent studies have suggested prior intercontinental biotic exchange. In particular, the possibility of early intermittent land bridges facilitating colonization constitutes a potential mechanism for speciation and colonization before full closure of the isthmus. To test this hypothesis, we employed genomic methods to study the biogeography of the army ant genusEciton, a group of keystone arthropod predators in Neotropical rainforests. Army ant colonies are unable to disperse across water and are therefore ideally suited to study the biogeographic impact of land bridge formation. Using a reduced representation genome sequencing approach, we show that all strictly Central American lineages ofEcitondiverged from their respective South American sister lineage between 4 and 7 Ma, significantly prior to the complete closure of the isthmus. Furthermore, three of the lineage pairs form extensive and coincident secondary contact zones in Costa Rica and Nicaragua, with no evidence of gene flow. Such a discrete and repeated biogeographic pattern indicates at least two waves of army ant dispersal into Central America that were separated by significant genetic divergence times. Thus, by integrating phylogenomic, population genomic and geographic evidence, we show that early colonization of Central America across the emerging Isthmus of Panamá drove parallel speciation inEcitonarmy ants.
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DOI:
--
发表时间:
2014
期刊:
影响因子:
--
作者:
C. Moreau
通讯作者:
C. Moreau
DOI:
--
发表时间:
2003
期刊:
影响因子:
--
作者:
M. Kaspari;S. O’Donnell
通讯作者:
S. O’Donnell
DOI:
--
发表时间:
2011
期刊:
影响因子:
--
作者:
Subfamily Dolichoderinae
通讯作者:
Subfamily Dolichoderinae
DOI:
10.1073/pnas.1137809100
发表时间:
2003-05-27
影响因子:
11.1
作者:
Brady, SG
通讯作者:
Brady, SG
影响因子:
1.3
作者:
S. K. Willson;R. Sharp;I. Ramler;A. Sen
通讯作者:
A. Sen