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A Morphometric Analysis of the Rachis Medulla of Primary Feathers
Author(s): LIU Guanqun, LI Bing, YANG Shuhui, XU Yanchun
Pages: 139-
142,145
Year: 2012
Issue:
3
Journal: Chinese Wildlife
Keyword: Rachis; Medulla; Mechanical property; Morphometrics;
Abstract: 鸟类飞羽羽轴机械性能一部分来自髓质,但是髓质泡沫结构如何影响羽轴机械性能的问题仍未被研究。本文对5种鸟类初级飞羽羽轴的髓质形态结构进行研究,测定了腔室的大小、壁厚度等形态计量学参数,分析了这些结构参数与体重的关系以及腔室在抵抗形变的作用过程。结果显示,髓质腔室断面的平均周长(l,表示腔室的大小)介于74.26±11.27~153.02±59.01μm之间,在一些种类(如丹顶鹤和毛脚鵟),外周髓质的...
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