Arid
DOI10.1186/s12862-015-0448-4
Past climate change on Sky Islands drives novelty in a core developmental gene network and its phenotype
Fave, Marie-Julie1; Johnson, Robert A.2; Cover, Stefan3; Handschuh, Stephan4; Metscher, Brian D.4; Mueller, Gerd B.4; Gopalan, Shyamalika1; Abouheif, Ehab1
通讯作者Abouheif, Ehab
来源期刊BMC EVOLUTIONARY BIOLOGY
ISSN1471-2148
出版年2015
卷号15
英文摘要

Background: A fundamental and enduring problem in evolutionary biology is to understand how populations differentiate in the wild, yet little is known about what role organismal development plays in this process. Organismal development integrates environmental inputs with the action of gene regulatory networks to generate the phenotype. Core developmental gene networks have been highly conserved for millions of years across all animals, and therefore, organismal development may bias variation available for selection to work on. Biased variation may facilitate repeatable phenotypic responses when exposed to similar environmental inputs and ecological changes. To gain a more complete understanding of population differentiation in the wild, we integrated evolutionary developmental biology with population genetics, morphology, paleoecology and ecology. This integration was made possible by studying how populations of the ant species Monomorium emersoni respond to climatic and ecological changes across five ` Sky Islands’ in Arizona, which are mountain ranges separated by vast ` seas’ of desert. Sky Islands represent a replicated natural experiment allowing us to determine how repeatable is the response of M. emersoni populations to climate and ecological changes at the phenotypic, developmental, and gene network levels.


Results: We show that a core developmental gene network and its phenotype has kept pace with ecological and climate change on each Sky Island over the last similar to 90,000 years before present (BP). This response has produced two types of evolutionary change within an ant species: one type is unpredictable and contingent on the pattern of isolation of Sky lsland populations by climate warming, resulting in slight changes in gene expression, organ growth, and morphology. The other type is predictable and deterministic, resulting in the repeated evolution of a novel wingless queen phenotype and its underlying gene network in response to habitat changes induced by climate warming.


Conclusion: Our findings reveal dynamics of developmental gene network evolution in wild populations. This holds important implications: (1) for understanding how phenotypic novelty is generated in the wild; (2) for providing a possible bridge between micro-and macroevolution; and (3) for understanding how development mediates the response of organisms to past, and potentially, future climate change.


类型Article
语种英语
国家Canada ; USA ; Austria
收录类别SCI-E
WOS记录号WOS:000360678100001
WOS关键词CONVERGENT EVOLUTION ; PARALLEL EVOLUTION ; DROSOPHILA EMBRYOS ; KEY INNOVATION ; EVO-DEVO ; POPULATION ; POLYMORPHISM ; RESPONSES ; ANTS ; PIGMENTATION
WOS类目Evolutionary Biology ; Genetics & Heredity
WOS研究方向Evolutionary Biology ; Genetics & Heredity
来源机构Arizona State University
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/186287
作者单位1.McGill Univ, Dept Biol, Montreal, PQ, Canada;
2.Arizona State Univ, Sch Life Sci, Tempe, AZ 85287 USA;
3.Harvard Univ, Museum Comparat Zool, Cambridge, MA 02138 USA;
4.Univ Vienna, Dept Theoret Biol, A-1090 Vienna, Austria
推荐引用方式
GB/T 7714
Fave, Marie-Julie,Johnson, Robert A.,Cover, Stefan,et al. Past climate change on Sky Islands drives novelty in a core developmental gene network and its phenotype[J]. Arizona State University,2015,15.
APA Fave, Marie-Julie.,Johnson, Robert A..,Cover, Stefan.,Handschuh, Stephan.,Metscher, Brian D..,...&Abouheif, Ehab.(2015).Past climate change on Sky Islands drives novelty in a core developmental gene network and its phenotype.BMC EVOLUTIONARY BIOLOGY,15.
MLA Fave, Marie-Julie,et al."Past climate change on Sky Islands drives novelty in a core developmental gene network and its phenotype".BMC EVOLUTIONARY BIOLOGY 15(2015).
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