褐马鸡地理种群的遗传多样性研究

从分子遗传学角度对采自陕西省黄龙县和河北小五台山两个地区的褐马鸡种群进行了研究,完成了上述两个地区褐马鸡线粒体控制区的全序列测序,并与GenBank中搜索的马鸡属的其它三个种的同源序列进行比对分析.综合考虑该区域的地质历史背景和本研究得到的上述两地区褐马鸡与蓝马鸡的遗传距离分析,研究认为由于0.15 MaBP黄河切穿三门峡后东流入海以及历史上的人类活动,导致原来连续的褐马鸡分布区域分隔,并逐渐分化成不同的地理种群.研究还指出褐马鸡种群内遗传多样性极低,并建议褐马鸡和蓝马鸡应为同种不同色型.

Study on the genetic diversity in brown eared-pheasant (crossoptilon mantchuricum) populations

The genetic diversity in brown eared-pheasant (Crossoptilon mantchuricum) populations from two separated distribution areas, Huanglong County in Shaanxi province and Xiaowutai Mountain in Hebei province, are analyzed in this study. The sequencing of mitochondrial control region in the brown eared-pheasant from two areas above is performed. The homologous sequence in other three cogeneric species were acquired from GenBank and then compared with that of the brown eared-pheasants in this study. Taking the local geological history and the genetic distance between different samples acquired in this study into account, it is suggested that Yellow River running through the Sanmenxia Gorge eastward into the sea 0. 15 MaBP and the following human activities resulted in isolation of different geographical populations of C. mantchuricum. Moreover, the low genetic diversity within C. mantchuricum and the small genetic distance between C. mantchuricum and C. auritum indicate that C. mantchuricum and C. auritum should be conspecific just with different color style.