摘要
鸟类栖息行为是鸟类重要的生活习性,与鸟类后肢骨骼的形态结构之间存在密切的适应演化关系,而中生代鸟类栖息行为的分析推断也是古鸟类学研究的热点。文中通过对大量现生鸟类的后肢骨骼系统进行形态学对比、统计学分析,分别以后肢3块骨骼的长度变化、跗跖骨远端跖骨滑车的特征差异、第Ⅲ趾趾节长度变化规律和第Ⅲ脚爪爪弧的弧度大小为研究对象,并与其对应的栖息行为分别进行分析判断,然后将判断特征和有效变量运用于中生代鸟类栖息行为的推理中。通过系统的分析研究,对中生代鸟类的栖息行为得出如下的推断:大量基干鸟类的栖息习性是以攀援为主,只有少数可以树栖生活,反鸟类的栖息习性十分接近树栖鸟类,今鸟类的栖息行为兼有树栖、地栖的习性。
The avian perching behavior is crucial for birds. There are close evolutionary relationship in adaptation between the shape and structure of avian hind limb bones. In addition, the analysis and deduction for perching behavior in Mesozoic birds is a hot research field of fossil birds. In this paper, by contrasting the morphological variations and statistic analysis of the hind limb bones in abundant living birds, we focus on the length variation of hindlimbs, the characteristic diversity of metatarsal trochlea in distal tarsometatarsus, the phalangeal length variation in pedal middle digit and the claw curvature of middle digital claw and compare them with corresponded perching behavior. Then, we apply discriminative characteristic and valid variable to infer Mesozoic birds＇ perching behavior. By systematically analyzing the perching behavior of Mesozoic birds, We reach the conclusion that large numbers of basal birds with perching behavior maily belong to climbing group, and only minority species belong to arboreal life group. The perching behavior of enantiornithines is close to that of arboreal birds. The perching behavior of ornithurines could be arboreal or terrestrial.
出处
《地质论评》
CAS
CSCD
北大核心
2010年第6期875-884,共10页
Geological Review
基金
国家自然科学基金资助项目(编号40872005)
北京市自然科学基金资助项目(编号5092010)
北京市科学技术研究院"萌芽后续"人才培养计划项目(编号2009-4)
中国科学院脊椎动物进化系统学重点实验室开放课题研究基金(编号2010LESV008)的成果
关键词
形态特征
统计分析
栖息行为
后肢骨骼
中生代
古鸟类
morphological characteristics
statistic analysis
perching behavior
hindlimb bones
Mesozoic
fossil birds
