Primary Studies of Ultrastructure and Part Element Component in Eggshell of Stachyris nonggangensis
In order to explore the characters of eggshell of Nonggang babbler (Stachyris nonggangensis) , a new described bird species in limestone area of southwestern Guangxi, scanning electron microscopy were used to observe eggshell and part element component were measured by flame atomic absorption method and spectrophotometry. The result indicates that eggshell of Nonggang babbler, average (81.50 ±3.04) μm (n =30) thick, can be divided into 4 layers including surface, palisade, cone and membrane layer from outside to inside. Surface layer, with some open pores and craquelures in outside, is very rough. Palisade layer, with a lot of vesicular holes, is the key component of eggshell. Cone layer consists of basement and mammilla layer. Furthermore, membrane layer is made up of multi-layer protein fiber with the diameter about ( 1. 28 ±0. 50) μm (n =30) in length. Calcium, with 507. 26 mg/g in density, is the main elements. Microelement as fer-rum, strontium, manganese and aluminum were found in the eggshell of Nonggang babbler. However, these structures and element component may be a special adaption to the limestone habitat and poor flight ability of Nonggang babbler.
NETL
NSTL
万方数据
维普
