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光周期和高脂食物对横断山区高山姬鼠肥满度的影响

发表时间:2013-09-15  浏览量:769  下载量:401
全部作者: 高文荣,朱万龙,王政昆
作者单位: 云南师范大学生命科学学院
摘 要: 对分布于横断山区高山姬鼠(Apodemus chevrieri)的肥满度(relative fatness)进行测定,以探讨高山姬鼠肥满度与光周期和高脂食物之间的关系。将高山姬鼠分别驯化于长光照低脂、高脂食物和短光照低脂、高脂食物条件下,7周后测定动物的体重和体长。采用体重与体长立方的比值(K=100W/L3)作为测定肥满度的指标。结果发现:高山姬鼠雌雄鼠肥满度之间差异不显著,不同年龄组之间肥满度差异不显著。光周期极显著影响高山姬鼠的肥满度,食物质量以及光周期和食物质量的交互作用对高山姬鼠的肥满度没有显著影响。肥满度的变化趋势为:长光照组极显著大于短光照组,其中,长光低脂组最大,短光高脂组最小。高山姬鼠的肥满度在不同光周期和食物质量条件下的变化模式与其生存的低纬度高海拔、年平均温度较低、光照和食物波动大的横断山区密切相关。
关 键 词: 动物学;肥满度;高山姬鼠;光周期;高脂食物;横断山区
Title: Effects of photoperiod and high fat diet on relative fatness in Apodemus chevrieri in Hengduan mountains
Author: GAO Wenrong, ZHU Wanlong, WANG Zhengkun
Organization: School of Life Sciences, Yunnan Normal University
Abstract: Relative fatness was measured in Apodemus chevrieri in Hengduan mountains, in order to study the relationship between body status and photoperiod and high fat diet in A.chevrieri. A.chevrieri were acclimatized to one of 4 regimens as the following: long day and low fat diet; long day and high fat diet; short day and low fat diet; short day and high fat diet. After a 7-week acclimation period, we determined body mass and body size. The relative fatness in A.chevrieri was calculated by empirical formula (K=100W/L3). The results showed that there were no significant sexual differences with respect to relative fatness; the relative fatness showed no significant differences in the groups with different ages; while the changes of relative fatness were significantly affected by photoperiod, but not by diet or the interaction of photoperiod and diet. The variation trends of relative fatness were long day acclimation group greater than short-day acclimation group, thereinto, highest in long day and low fat diet and lowest in short day and high fat diet. The change patterns on relative fatness of A.chevrieri in different photoperiod and diet were related to their microenvironment such as low latitude, high elevation, lower average ambient temperature and the big change of photoperiod and food resources in Hengduan mountains.
Key words: zoology; relative fatness; Apodemus chevrieri; photoperiod; high fat diet; Hengduan mountains
发表期数: 2013年9月第17期
引用格式: 高文荣,朱万龙,王政昆. 光周期和高脂食物对横断山区高山姬鼠肥满度的影响[J]. 中国科技论文在线精品论文,2013,6(17):1657-1662.
 
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