A secondary endochondral ossification centre in the furcula of extant birds and its significance for the evolution of the neornithine acrocoracoclavicular joint

doi:10.1080/08912963.2024.2364337

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	A secondary endochondral ossification centre in the furcula of extant birds and its significance for the evolution of the neornithine acrocoracoclavicular joint
	Wu, Qian 1,2; Zhou, Zhonghe2 ; Li, Zhiheng2
	2024-06-14
发表期刊	HISTORICAL BIOLOGY
ISSN	0891-2963
页码	10
通讯作者	Wu, Qian([email protected])
摘要	The processus acrocoracoideus claviculae on the furcular epicleidium of some extant birds has been hypothesised to have developed independently from the main body of furcula, potentially representing a secondary ossification centre within avian furcula. However, the developmental pattern of the processus acrocoracoideus claviculae remains unclear, impeding our understanding of its homology and evolution. Here, we analysed the morphology, articulation and developmental pattern of the avian furcular epicleidium through X-ray computed tomography scanning and histochemical staining in several bird exemplars. The results show that the processus acrocoracoideus claviculae is a secondary endochondral ossification in the furcula, distinct from the intramembranously ossified main furcula and separated by connective tissue. The processus acrocoracoideus claviculae fuses with the furcula during postnatal development and forms the articular surface of the acrocoracoclavicular joint. The developmental pattern suggests that the left and right processus acrocoracoideus claviculae may be formed by the fusion of a sesamoid with the respective furcular ramus and evolved convergently among different neornithine lineages. This unique structure of furcula not only increases the morphological diversity of the acrocoracoclavicular joint in neornithine birds but also lays the foundation for their complex and diverse flight styles.
关键词	Processus acrocoracoideus claviculae sesamoid neomorph furcular development
DOI	10.1080/08912963.2024.2364337
关键词[WOS]	LEG SKELETON ; CARTILAGE ; THEROPOD ; FLIGHT ; MORPHOLOGY ; ORIGIN ; CHINA ; BONE ; AVES ; MUSCULATURE
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[42302012] ; National Natural Science Foundation of China[42288201]
项目资助者	National Natural Science Foundation of China
WOS研究方向	Life Sciences & Biomedicine - Other Topics ; Paleontology
WOS类目	Biology ; Paleontology
WOS记录号	WOS:001252822000001
出版者	TAYLOR & FRANCIS LTD
引用统计
文献类型	期刊论文
条目标识符	http://119.78.100.205/handle/311034/23774
专题	中国科学院古脊椎动物与古人类研究所
通讯作者	Wu, Qian
作者单位	1.Univ Chinese Acad Sci, Yuquan Rd 19, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Vertebrate Paleontol & Paleoanthropol, Key Lab Vertebrate Evolut & Human Origins, Beijing, Peoples R China
推荐引用方式 GB/T 7714	Wu, Qian,Zhou, Zhonghe,Li, Zhiheng. A secondary endochondral ossification centre in the furcula of extant birds and its significance for the evolution of the neornithine acrocoracoclavicular joint[J]. HISTORICAL BIOLOGY,2024:10.
APA	Wu, Qian,Zhou, Zhonghe,&Li, Zhiheng.(2024).A secondary endochondral ossification centre in the furcula of extant birds and its significance for the evolution of the neornithine acrocoracoclavicular joint.HISTORICAL BIOLOGY,10.
MLA	Wu, Qian,et al."A secondary endochondral ossification centre in the furcula of extant birds and its significance for the evolution of the neornithine acrocoracoclavicular joint".HISTORICAL BIOLOGY (2024):10.