Knowledge Resource Center for Ecological Environment in Arid Area
DOI | 10.1111/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
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ISSN | 0014-3820 |
EISSN | 1558-5646 |
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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