内蒙古地区两个无斑沙蜥种群形态和结构的比较

Comparison of the Morpha and Structure of Two Populations of Phrynocephalus immaculatus in Inner Mongolia

对内蒙古额济纳旗(41°58′N,101°05′E,)和乌拉特后旗(41°26′N,106°58′E,)两地无斑沙蜥(Phrynocephalus immaculatus)形态和种群结构作了比较和分析.额济纳旗种群体型小于乌拉特后旗种群,前者密度和性比(♂/♀)高于后者,但雌性生殖力低于后者,两地种群当年幼体均约占种群的50%.无论形态还是种群结构,两地种群皆显示出对各自生境的高度适应.

Morpha and population structure of spotless toad-headed agama （Phrynocephalus immaculatus） living in Ejin Qi （41°58′N, 101°05′E） and Urad Houqi （41°26′N, 106°58′E） in Inner Mongolia are compared respectively. The body size of Ejin Qi population is smaller than that of Urad Houqi population,the density and sex ratio （♂/♀）of the former are higher than that of the latter, but the female fecundity of the former is lower than that of the latter. The larvae ratio of two populations is about 50% respectively. Both the morpha and the ecological character show that the two populations adapt perfectly to their habitat.