Three-dimensional morphology of the Sinocyclocheilus hyalinus (Cypriniformes: Cyprinidae) horn based on synchrotron X-ray microtomography

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	Three-dimensional morphology of the Sinocyclocheilus hyalinus (Cypriniformes: Cyprinidae) horn based on synchrotron X-ray microtomography
	He Y[]1; Chen XY 2; Xiao TQ 1; Yang JX[]2
刊名	Zoological Research
	2013
卷号	34 期号:E4−5 页码:E128−E134
关键词	Sinocyclocheilus hyalinus Cavefish Horn Troglomorphism Synchrotron X-ray microtomography
通讯作者	yangjx@mail.kiz.ac.cn ; heyou@sinap. ac.cn
合作状况	其它
中文摘要
英文摘要	Sinocyclocheilus is a cave-dwelling cyprinid genus endemic to southwest China. Several species possess a conspicuous horn on their head, which has been suggested as a constructive troglomorphic trait but lacks substantial evidence. We used non-invasive, high spatial resolution synchrotron X-ray microtomography to investigate the three-dimensional (3D) morphology of the horn of Sinocyclocheilus hyalinus, one of eight such troglobiotic species. 3D renderings demonstrated the osteological components, which were comprised of a rear wall comprised of the supraoccipital bone, a remaining frontal wall with numerous fenestrae, and the bottom continuous with the parietal and epiotic. A horn cavity occurred within the horn. The fenestrae in the frontal wall were continuous in the horn cavity and showed elaborate channeling, and were, connected to the cranial cavity by soft tissue. We tentatively called this configuration the "otocornual connection" due to its anatomic and putative functional similarity to the otolateralic connection in clupeids and loricariids, which provide an indirect pathway to enhance perception of underwater sound signals. This study provides a functional morphology context for further histological and physiological investigations of such horn structures in Sinocyclocheilus cavefish, and we suggest that the horn might enhance acoustic perception to compensate for visual loss in subterranean life, which warrants future physiological examination as lab-reared S. hyalinus become available.
收录类别	其他
资助信息	This work was partially supported by the fund of State Key Laboratory of Genetic Resources and Evolution (GREKF13-06)
语种	英语
公开日期	2014-06-03
内容类型	期刊论文
源URL	[http://159.226.149.42:8088/handle/152453/7846]
专题	昆明动物研究所_系统进化与生物地理学昆明动物研究所_遗传资源与进化国家重点实验室昆明动物研究所_东南亚野生动物多样性
作者单位	1.Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai 201204, China 2.State Key Laboratory of Genetic Resources and Evolution, Kunming Institute of Zoology, Chinese Academy of Sciences, Kunming 650223, China
推荐引用方式 GB/T 7714	He Y[*],Chen XY,Xiao TQ,et al. Three-dimensional morphology of the Sinocyclocheilus hyalinus (Cypriniformes: Cyprinidae) horn based on synchrotron X-ray microtomography[J]. Zoological Research,2013,34(E4−5):E128−E134.
APA	He Y[],Chen XY,Xiao TQ,&Yang JX[].(2013).Three-dimensional morphology of the Sinocyclocheilus hyalinus (Cypriniformes: Cyprinidae) horn based on synchrotron X-ray microtomography.Zoological Research,34(E4−5),E128−E134.
MLA	He Y[*],et al."Three-dimensional morphology of the Sinocyclocheilus hyalinus (Cypriniformes: Cyprinidae) horn based on synchrotron X-ray microtomography".Zoological Research 34.E4−5(2013):E128−E134.