Cranial shape transformation in the evolution of the giant panda (Ailuropoda melanoleuca)

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	Cranial shape transformation in the evolution of the giant panda (Ailuropoda melanoleuca)
	Figueirido, Borja 1; Palmqvist, Paul 1; Perez-Claros, Juan A.1; Dong, Wei 2; [email protected]
	2011-02-01
发表期刊	NATURWISSENSCHAFTEN
ISSN	0028-1042
卷号	98 期号:2 页码:107-116
文章类型	Article
摘要	In this study, landmark-based methods of geometric morphometrics are used for investigating the main aspects of cranial shape transformation in the evolution of the giant panda, Ailuropoda melanoleuca. Specifically, we explore if the highly derived cranial adaptations for bamboo feeding of the living panda were developed early in the panda's lineage. Results obtained show that the overall cranial morphologies of the oldest known panda, the "pygmy" Ailuropoda microta, and the late Pleistocene Ailuropoda baconi are both very similar to that of their closest living relative, A. melanoleuca, which agrees with a previous proposal based on qualitative criteria. However, we also describe several differences between the crania of A. microta, A. baconi, and A. melanoleuca, including the development of the postorbital process, the orientation of the occipital region, and the expansion of the braincase. As a result, the cranial morphology of A. microta shows a less specialized morphology toward a fibrous and durophagous diet compared to the giant panda. These results are confirmed by a comparative analysis of the dimensions of the upper teeth in bears, which has revealed differences in relative tooth size between A. microta and A. melanoleuca, most probably as a result of mosaic evolution. Therefore, we conclude that cranial shape did not remain essentially uniform in the Ailuropoda lineage, as previously thought, but underwent a number of changes during more than 2 Myr.
关键词	Ailuropoda Cranial Morphology Evolution Geometric Morphometrics
WOS标题词	Science & Technology
URL	查看原文
关键词[WOS]	GEOMETRIC MORPHOMETRICS ; CARNIVORA MAMMALIA ; BEARS CARNIVORA ; PHYLOGENY ; ADAPTATION ; URSIDAE ; SKULL ; LONG
收录类别	SCI
语种	英语
WOS研究方向	Science & Technology - Other Topics
WOS类目	Multidisciplinary Sciences
WOS记录号	WOS:000286664700003
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/4453
专题	中科院古脊椎所（2000年以后）
通讯作者	[email protected]
作者单位	1.Univ Malaga, Fac Ciencias, Area Paleontol, Dept Ecol & Geol, E-29071 Malaga, Spain 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Beijing 100044, Peoples R China
推荐引用方式 GB/T 7714	Figueirido, Borja,Palmqvist, Paul,Perez-Claros, Juan A.,et al. Cranial shape transformation in the evolution of the giant panda (Ailuropoda melanoleuca)[J]. NATURWISSENSCHAFTEN,2011,98(2):107-116.
APA	Figueirido, Borja,Palmqvist, Paul,Perez-Claros, Juan A.,Dong, Wei,[email protected].(2011).Cranial shape transformation in the evolution of the giant panda (Ailuropoda melanoleuca).NATURWISSENSCHAFTEN,98(2),107-116.
MLA	Figueirido, Borja,et al."Cranial shape transformation in the evolution of the giant panda (Ailuropoda melanoleuca)".NATURWISSENSCHAFTEN 98.2(2011):107-116.

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