Geometric morphometrics: A powerful tool for the study of shape evolution in Menispermaceae endocarps

	Geometric morphometrics: A powerful tool for the study of shape evolution in Menispermaceae endocarps
	Jacques, Frederic M. B.1; Zhou, Zhekun1,2
通讯作者	zhouzk@mail.kib.ac.cn
	2010-06-01
发表期刊	TAXON
ISSN	0040-0262
卷号	59 期号:3 页码:881-895
摘要	Within Menispermaceae, endocarp shape is highly variable and often characteristic. This study applied geometric morphometrics to the investigation of horseshoe-shaped endocarps that characterized the former Menispermeae tribe. The shape of 823 endocarp specimens, representing 66 species and 16 genera, were described on the lateral face by the means of 4 landmarks and IS semilandmarks. The general Procrustes analysis was used to remove size and orientation of the specimens. Using thin-plate splines, we were able to visualize and describe the variation in shape for each genus and/or species. The main differences concern the symmetry/asymmetry of endocarp, the relative size of condyle, the relative length of ventral face and the concavity of ventral face. The results fa PCA reveal that for all genera except Diploclisia, generic variability is explained by a continuum in intra- and interspecific variability. Endocarp shape differed significantly between genera, demonstrating the potential for geometric morphometrics in fossil identification. Allometry explained only a small part of shape variation. Phylogenetic content is evaluated by comparing the results of cluster analysis with recent molecular phylogenies. Endocarp shape affinities appear to be quite different from phylogenetic relationships, demonstrating the low phylogenetic signal in endocarp shape at the family level. However, stronger variation is found in the lineages leading to modern genera. With a known phylogeny, geometric morphometrics is a good tool to understand shape evolution.
关键词	Endocarp Menispermaceae Menispermeae Morphometrics Phylogeny Shape
学科领域	Plant Sciences ; Evolutionary Biology
收录类别	SCI
语种	英语
WOS记录号	WOS:000278744000016
引用统计
文献类型	期刊论文
条目标识符	http://ir.kib.ac.cn/handle/151853/14313
专题	中国科学院东亚植物多样性与生物地理学重点实验室
作者单位	1.Chinese Acad Sci, Kunming Inst Bot, Key Lab Biodivers & Biogeog, Kunming 650204, Yunnan, Peoples R China 2.Chinese Acad Sci, Xishuangbanna Trop Bot Garden, Mengla 666303, Yunnan, Peoples R China
推荐引用方式 GB/T 7714	Jacques, Frederic M. B.,Zhou, Zhekun. Geometric morphometrics: A powerful tool for the study of shape evolution in Menispermaceae endocarps[J]. TAXON,2010,59(3):881-895.
APA	Jacques, Frederic M. B.,&Zhou, Zhekun.(2010).Geometric morphometrics: A powerful tool for the study of shape evolution in Menispermaceae endocarps.TAXON,59(3),881-895.
MLA	Jacques, Frederic M. B.,et al."Geometric morphometrics: A powerful tool for the study of shape evolution in Menispermaceae endocarps".TAXON 59.3(2010):881-895.

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