摘要
对高黎贡山高山采集的10种雀形目鸟类卵壳进行扫描电镜观察,分析鸟类物种间卵壳显微结构特征差异,探讨鸟卵显微结构特征和筑巢位置的关系。结果表明:卵壳均是由表面结晶层、栅栏层、锥体层和壳膜层构成,但是表层上的透明保护膜只在火尾绿鹛、异色树莺、火尾太阳鸟和白眉林鸲上具有,其余6种没有;火尾太阳鸟和火尾绿鹛的乳锥形状在孵化后均呈不规则状,说明这一显微结构在孵化前才有可比性;卵壳的厚度、表面气孔和蜂窝小孔孔径等可量性特征存在种间差异,树上营巢的鸟类蜂窝小孔孔径显著大于地面营巢的鸟类,而地面营巢的鸟类壳膜纤维直径和壳膜纤维密度均显著高于树上营巢鸟类;这10种鸟类的卵壳蜂窝小孔孔径与热带鸟类相当,推测与高黎贡山降雨充沛、空气湿度大有关。
We focused on 10 spp. of passerine birds that breed in the alpine habitat of Mt. Gaoligong and use scanning electron microscope to characterize eggshell ultrastructures,and the relationship between the eggshell ultrastructures and nesting position was discussed. We found that the eggshells were composed similarly, they were all characterized by crystalline, palisade, and mammillary layers as well as a shell membrane. Four of the 10 species had additional materials covering the crystalline layer. We found that the mammilary core structures of Aethopyga ignicauda and Myzornis pyrrhoura changed after the completing of incubation, indicating that comparisons of the mammilary cores could only be made on samples collected before hatching. The eggshell thickness, surface pore and vesicles were different among species.We found that tree-nesting species tend to have larger vesicles than ground-nesting species. Conversely, ground-nesting species have denser and thinner-diameter membrane fibers. The vesicles of these 10 passerine species were similar to that of tropical birds. It is speculated that this is related to the abundant rainfall and high air humidity in Mt. Gaoligong.
作者
王官胜
王晓彤
梁丹
罗旭
Wang Guansheng;Wang Xiaotong;Liang Dan;Luo Xu(Key Laboratory of Ministry of Education for Forest Resources Conservation and Utilization in the Southwest Mountains of China, Southwest Forestry University, Kunming Yunnan 650224, China;School of Life Sciences, Sun Yat-Sen University, Guangzhou Guangdong 510275, China)
出处
《西南林业大学学报（自然科学）》
CAS
北大核心
2019年第2期160-166,共7页
Journal of Southwest Forestry University：Natural Sciences
基金
国家自然科学基金(31660612)项目资助
关键词
鸟类卵壳
显微结构
生态适应
高黎贡山
bird eggshell
ultrastructure
ecological adaptation
Mt. Gaoligong
