山地麻蜥生态的初步研究  

A Preliminary Study on Ecology of Eremias brenchleyi

作　　者：冯照军[1] 孙建梅[1] 赵彦禹[1] 刘缠民[1] 

机构地区：[1]徐州师范大学生命科学学院,江苏徐州221116

出　　处：《四川动物》2005年第3期359-366,共8页Sichuan Journal of Zoology

基　　金：徐州师范大学科研基金资助项目(02AXW010)

摘　　要：山地麻蜥主要栖息在市郊海拔大于100 m的山丘上部及山顶.研究结果表明,山地麻蜥正常密度大约为1只/100 m2,其数量与山丘土石状况、植被盖度及海拔高度有一定关系,与植被类型关系不大.山地麻蜥似乎有一定的'护洞'行为.主食昆虫和蜘蛛,春季食物生态位宽度大于秋季,食物生态位重叠度为0.61.性比变化较大,出蛰初期和冬眠前期雄多雌少;而5～10月份期间,性比接近1.幼体至成体发育期间,雄性生长快于雌性;但成年期后,雌性头体部分的生长快于雄性,可能与怀卵有关.山地麻蜥种群可分为4个年龄组,个体数量比约为幼年:亚成年:成年A:成年B≈1.8:1.9:3.1:1,但成体与非成体的数量比约为1.2:1,应属于稳定型种群.个体自然寿命约为5.5～6周年.人类干扰是山地麻蜥种群下降的原因之一.The habitat of Eremias Inenchleyi was mainly at the top of hills （ 〉an altitude of 100 m） in the suburbs around Xuzhou City. The results indicated that the normal density of E. brenchleyi was about 1/100 m^2, and the quantity was certain related to the state of soil and stone, the coverage and the altitude of hills, but wasn＇t related to the vegetation form. It seems that the lizard had certain “protecting-ncst behavior”. This lizard fed chiefly on insect and spider. The food niche breadth of spring was larger than that of autumn, and the food niche overlap was 0.61. The sexual ratio had taken great place, the number of the male was more than that of the female at early emergence and early hibernation, but the sexual ratio approached 1 from May to Oct. From juvenile stage to adult stage, the growth rate of the male was faster than that of the female, but afterwards the growth rate of snout-vent of female adults was faster than that of male adults. It may be related to pregnancy. The age structure of E. breuchley can be divided into 4 groups, and juvenile： suh-adault ： adauh A ： dauh B was about 1.8 ： 1.9 ： 3.1 ： 1, but adault ： non-adault was about 1.2 ： 1, and it should belong to stable population. Natural life of this lizard was 5.5～6 years. Human disturbance was one of reasons of the population decline.

关 键 词：山地麻蜥 种群生态 食物生态位 性比 年龄分组 

分 类 号：Q958.1[生物学—动物学]