Yamada Shinnosuke
School of Medicine, International University of Health and Welfare, Narita Campus, Kozunomori 4-3, Narita City, Chiba Prefecture, 286-8686, Japan.
J Morphol. 2017 Nov;278(11):1570-1576. doi: 10.1002/jmor.20731. Epub 2017 Jul 10.
The crescent sculpture of the so-called "Xestoleberis-spot" develops inside the calcified valve of the family Xestoleberididae. Electron microscopic observations on both, intermoult and postmoult stages of Xestoleberis species reveal that the "Xestoleberis-spot" system consists of three elements; two calcified chambers, a vesicle of electron-dense material and an uncalcified procuticle. The formation and function of the "Xestoleberis-spot" system are discussed. In conclusion, the "Xestoleberis-spot" system functions as the muscle attachment site for several antennal muscles, and provides the material for chitinous fibers in the exocuticle of outer lamella. The unique cuticular structures of the family Xestoleberididae are due to the "Xestoleberis-spot" system.
所谓“Xestoleberis斑”的新月形结构在Xestoleberididae科的钙化瓣膜内发育。对Xestoleberis属物种的蜕皮间期和蜕皮后期阶段进行的电子显微镜观察表明，“Xestoleberis斑”系统由三个元素组成：两个钙化腔室、一个电子致密物质囊泡和一个未钙化的前表皮。本文讨论了“Xestoleberis斑”系统的形成和功能。总之，“Xestoleberis斑”系统作为多条触角肌肉的肌肉附着部位，并为外层薄片外表皮中的几丁质纤维提供物质。Xestoleberididae科独特的表皮结构归因于“Xestoleberis斑”系统。
