摘要
（１）在耳羽簇发达程度、尾羽形状、腓肠肌外侧支腱膜内的种子骨和第二趾收肌、雄鸡间争偶和占区行为、巢址选择、新生雏形态等方面，白马鸡和藏马鸡、蓝马鸡和褐马鸡分别表现出明显不同的一致性。基于此，我们认为白马鸡和藏马鸡是原始的类型，蓝马鸡和褐马鸡有较近的亲缘关系。（２）青藏高原短暂的隆起历史和相应发生的生态环境的复杂变化，是白马鸡各亚种形态多变而不稳定的主要原因。与白马鸡相比，藏马鸡的体色特化而稳定，结合青藏高原生态环境的演化历史，认为藏马鸡可能保留了更多的原始特征。（３）依据化石、地理分布和生态适应特征，结合地质历史，我们提出马鸡的物种形成是从川、滇、藏交界地区向北、向东分化扩展的过程。
(1)It is easy to distinguish C.crossoptilon and C.harmani from C.auritum and C.mantchuricum by shapes of ear tufts and tail,sesamoid in gastrocnemius tendon and adductor digitus secundi,behaviours of fighting for mate and territory between males,nest selection,morphology of newly hatched nestling.Based on these C.crossoptilon and C.harmani are considered more primitive,and there is a closer relative relationship between them than that between C.auritum and C.mantchuricumis .(2)It is likely that the shorter history of rise of Qing Zang plateau and correspondingly its complicated change in ecological environment have been making the subspecies of C.crossoptilon vary greatly on morphology.Comparing with C.crossoptilon ,the body colour of C.harmani is specialized and stable.The development of environment of their distribution areas indicates that C.harmani could have remained more ancestral characteristics.(3)According to the fossil,geographical distribution,ecologically adaptive features along with geological history,a hypothesis has been produced that the speciation of the Eared Pheasants is a process in which their ancestral species specialized and spread from the junction of Sichuan,Yunnan and Tibet towards the north then the east.
出处
《动物学报》
SCIE
CAS
CSCD
1998年第2期131-137,共7页
ACTA ZOOLOGICA SINICA
基金
高等学校博士学科点专项科研基金
