Arid
DOI10.1111/evo.13186
Developmental dynamics of ecomorphological convergence in a transcontinental lizard radiation
Hipsley, Christy A.1,2,3; Mueller, Johannes3
通讯作者Hipsley, Christy A.
来源期刊EVOLUTION
ISSN0014-3820
EISSN1558-5646
出版年2017
卷号71期号:4页码:936-948
英文摘要

Phenotypic convergence has confounded evolutionary biologists for centuries, explained as adaptations to shared selective pressures, or alternatively, the result of limited developmental pathways. We tested the relative roles of adaptation and constraint in generating convergent cranial morphologies across a large lizard radiation, the Lacertidae, whose members inhabit diverse environments throughout the Old World and display high amounts of homoplasy associated with ecological niche. Using 3D X-ray computed tomography, we quantified cranial shape variation associated with ontogeny, allometry, and ecology, covering all lacertid genera and one-third of species diversity. Landmark-based geometric morphometrics showed that cranial shape varied significantly among biomes, with substantial convergence among arid-dwelling lineages. Comparisons of species cranial growth trajectories between biomes revealed that allometric postdisplacement, as evidenced by decreased elevation of a constant ontogenetic slope, drives the convergent paedomorphic appearance of independent arid-dwelling forms. We hypothesize that observed heterochronic changes reflect temporal compression of ancestral life history in response to extreme environments, with associated phenotypes occurring as by-products of adaptive shifts in reproductive investment. Although allometry has long been considered a developmental constraint, our results demonstrate that allometric flexibility during early ontogeny produces convergent ecomorphologies over vast temporal and spatial scales, thus dramatically obscuring underlying phylogenetic signals.


英文关键词Allometry constraint convergence Lacertidae ontogeny
类型Article
语种英语
国家Australia ; Germany
收录类别SCI-E
WOS记录号WOS:000398545200010
WOS关键词DIMENSIONAL MULTIVARIATE DATA ; LACERTID LIZARDS ; GEOMETRIC MORPHOMETRICS ; MORPHOLOGICAL EVOLUTION ; ONTOGENIC TRAJECTORIES ; SQUAMATE REPTILES ; FOSSIL RECORD ; FORAGING MODE ; SKULL SHAPE ; HABITAT USE
WOS类目Ecology ; Evolutionary Biology ; Genetics & Heredity
WOS研究方向Environmental Sciences & Ecology ; Evolutionary Biology ; Genetics & Heredity
资源类型期刊论文
条目标识符http://119.78.100.177/qdio/handle/2XILL650/198886
作者单位1.Univ Melbourne, Sch BioSci, Parkville, Vic 3010, Australia;
2.Museum Victoria, GPO Box 666, Melbourne, Vic 3001, Australia;
3.Museum Nat Kunde, Leibniz Inst Evolut & Biodivers Sci, Invalidenstr 43, D-10115 Berlin, Germany
推荐引用方式
GB/T 7714
Hipsley, Christy A.,Mueller, Johannes. Developmental dynamics of ecomorphological convergence in a transcontinental lizard radiation[J],2017,71(4):936-948.
APA Hipsley, Christy A.,&Mueller, Johannes.(2017).Developmental dynamics of ecomorphological convergence in a transcontinental lizard radiation.EVOLUTION,71(4),936-948.
MLA Hipsley, Christy A.,et al."Developmental dynamics of ecomorphological convergence in a transcontinental lizard radiation".EVOLUTION 71.4(2017):936-948.
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