摘要
为摸清息烽县褐家鼠种群繁殖特征的变动规律,通过对息烽县1986-2008年23年系统监测资料统计分析,结果表明,共解剖褐家鼠标本2 672只,其中,雌鼠1 442只,雄鼠1 230只,全年均可繁殖,每年3-11月为主要繁殖期,3月-5月、10月出现2个繁殖高峰,12月至翌年1月出现繁殖低谷期。种群性比(♀/♂)为1.17,多年平均怀孕率为(31.17±11.68)%,平均胎仔数(6.59±0.27)只,平均繁殖指数1.01±0.39,雄鼠睾丸平均下降率为(79.53±5.73)%。可为种群数量预测预报和防治提供科学依据。
In order to provide a scientific basis for number prediction and control on Rattus norvegicus, the change law of population reproductive characteristics was studied by analysis of monitoring data in Xifeng county, Guizhou province from 1986 to 2008. The results show that 1442 female and 1230 male in 2 672 anatomized specimens can reproduce annually. The main reproductive period is from Mar. to Nov. in which two reproductive peaks emerge from Mar. to May and in Oct. , and the low reproductive period appears during Dec. to next Jan. The sex ratio （♀/♂） is 1.17 with （31.17 ±11.68）% average pregnancy rate, 6.59±0.27 average litter size, 1.01±0.39 average reproductive index and （79.53±5.73）% average descent rate of testicle.
出处
《贵州农业科学》
CAS
北大核心
2009年第7期86-89,共4页
Guizhou Agricultural Sciences
基金
贵州省优秀科技教育人才省长专项资金项目"褐家鼠
高山姬鼠监测技术研究"[黔省专合字(2007)105]
关键词
褐家鼠
繁殖特征
变动规律
息烽
贵州
Rattus norvegicus
reproductive characteristics
change law
Xifeng county
Guizhou
