根田鼠母体繁殖投入对子代质量的影响  

The Effects of Maternal Reproductive Investment on Quality of Offspring of Root Voles,Microtus Oeconomus

作　　者：都玉蓉[1] 马建滨[2] 苏建平[1] 刘季科[3] 

机构地区：[1]中国科学院西北高原生物研究所 [2]青海师范大学生命与地理科学学院,青海西宁810008 [3]浙江大学生命科学学院,浙江杭州310012

出　　处：《青海师范大学学报（自然科学版）》2007年第3期58-60,共3页Journal of Qinghai Normal University(Natural Science Edition)

摘　　要：本研究在实验室条件下,利用根田鼠母体繁殖和子代发育参数,分析其母体繁殖投入对子代质量的影响,目的在于探讨子代胎仔数与胎仔质量间的权衡理论.结果表明,母体体重与其繁殖投入不存在显著相关关系,子代胎仔数与初生窝重间存在显著的正相关关系与初生均重间存在显著的负相关关系.结论支持哺乳动物胎仔数与胎仔质量间权衡假设.By using parameters of maternal reproduction and offspring development of mot vole （Microtus oeconomus）, the effects of maternal reproductive investment on the quality of offspring were analyzed. The aims were to explore the trade-offs between litter size and quality of offspring. The results as follows： there were no correlative between maternal body mass and reproductive investment. Litter size were positive correlative with neonatal litter weight, but negative with mean neonatal body mass of offspring. The conclusion was supported the hypothesis of trade-offs on litter size and quality of offspring.

关 键 词：根田鼠(Microtus oeconomus) 母体体重 繁殖投入 胎子数 子代质量 

分 类 号：O631[理学—高分子化学] O647.11[理学—化学]