Li Dee, Zhang Kai, Li Xiaoyan, Zhu Peiping, Xu Caifeng, Wu Ziyu, Zhou Hongzhang
Key Laboratory of the Zoological Systematics and Evolution, Institute of Zoology, Chinese Academy of Sciences, 1 Beichen West Road, Chao Yang, 100101 Beijing, P. R. China; Email: unknown.
Beijing Synchrotron Radiation Facility, Institute of High Energy Physics, Chinese Academy of Sciences, Beijing 100049, P. R. China; Email: unknown.
Zootaxa. 2015 May 27;3963(3):335-68. doi: 10.11646/zootaxa.3963.3.3.
The Chinese endemic water beetle Amphizoa davidi Lucas, is a rare and endangered species belonging to the monotypic family Amphizoidae (Coleoptera: Adephaga). A study of the external and internal structures of A. davidi is here presented, by using X-ray phase contrast tomography and light microscopy. Morphological details and three dimensional (3D) structures of this species are provided: skeletons, muscles, reproductive organs of male and female, nervous system, alimentary canal and pygidial gland. The reproductive organs of females are compared in two different developmental phases (ages): before copulation without mature ovaries and after copulation with mature ovaries. Such detailed 3D tomographic study based on micro-CT technology may promote our understanding of the detailed morphology in Amphizoidae and Coleoptera in general.
中国特有水生甲虫大卫两栖甲（Amphizoa davidi Lucas）是一种珍稀濒危物种，隶属于单型科两栖甲科（鞘翅目：肉食亚目）。本文通过X射线相衬断层扫描和光学显微镜，对大卫两栖甲的外部和内部结构进行了研究。提供了该物种的形态细节和三维（3D）结构：骨骼、肌肉、雌雄生殖器官、神经系统、消化道和臀腺。比较了处于两个不同发育阶段（年龄）的雌性生殖器官：交配前未成熟卵巢阶段和交配后成熟卵巢阶段。基于显微CT技术的如此详细的3D断层扫描研究，总体上可能会促进我们对两栖甲科和鞘翅目详细形态的理解。
