高山姬鼠种群繁殖参数的变化  

The Changes in Population Reproductive Parameters of Apodemus chevieri

作　　者：杨再学[1] 金星 郭永旺[3] 龙贵兴 刘晋 

机构地区：[1]贵州省余庆县植保植检站,贵州余庆564400 [2]贵州省植保植检站,贵阳550001 [3]全国农业技术推广服务中心,北京100026 [4]贵州省大方县植保植检站,贵州大方551600

出　　处：《中国农学通报》2010年第1期189-194,共6页Chinese Agricultural Science Bulletin

基　　金：国家"十一五"科技攻关资助项目"主要害鼠灾变规律及监控技术研究与示范"(2005BA529A05);贵州省优秀科技教育人才省长专项资金资助项目"褐家鼠;高山姬鼠监测技术研究"(黔省专合字[2007]105号);遵义市"15851人才工程"第一层次培养人才在研项目资助(遵市15851人才办[2008]9号)

摘　　要：对1996至2008年贵州省大方县高山姬鼠种群繁殖参数的变化规律研究结果表明,高山姬鼠种群繁殖具有明显的季节周期性波动,主要繁殖期在4～9月,一年中在春季4～5月和秋季8～9月出现2次妊娠高峰期。研究期间共解剖标本1080只,雌鼠556只,雄鼠524只,种群性比为1.06,10年平均怀孕率为20.63%,平均胎仔数为5.92只,平均繁殖指数为0.67,平均睾丸下降率为72.05%,雄鼠睾丸下降率季节变化与雌鼠怀孕率季节变化呈同步变动趋势。不同年度、不同月份、不同季节种群繁殖参数存在一定差异。不同年龄组之间种群繁殖参数存在显著差异,随着种群年龄的增长,种群繁殖力不断增加。种群繁殖参数具有明显的地理差异。From 1996 to 2008, we analyzed the change law of population reproductive parameters of Apodemus chevrieri in Dafang County, Guizhou Province. The results show that the population reproduction of Apodemus chevrieri has obvious seasonal periodic fluctuation. The main reproduction period is from April to September and the two peak of pregnancy are from April to May in spring and from August to September in autumn. During the study period, a total of 1080 specimens （556 females, 524 males） were anatomized. The population sex ratio （♀/♂）, average catch rate, average Litter size, average reproductive index and average rate of scrotal testis were 1.06, 20.63%, 5.92, 0.67 and 72.05%, respectively. Seasonal changes of male rate of scrotal testis and female pregnancy rate were synchronous in trend. There is variation in population reproductive parameters in different years, month and seasons. Between different age groups, there was significant variation in population reproductive parameters. With the growth of population age, population reproductive capacity increased continuously. There was significant geography variation in population reproductive parameters.

关 键 词：高山姬鼠 繁殖参数 变化规律 贵州省 

分 类 号：Q958.1[生物学—动物学] S443.3[农业科学—农业昆虫与害虫防治]