摘要
为了摸清褐家鼠种群数量发生动态及繁殖规律,采用每月定时、定点在住宅区调查,收集鼠类标本,分类鉴定,体外测量,记载性别、怀孕率、胎子数、睾丸下降率、繁殖指数等数据。通过对1990-2008年19年的系统监测结果进行分析,结果表明:三都县住宅区害鼠以褐家鼠为优势种,占总鼠数的50.34%;褐家鼠不同季节均有发生,6月为种群数量最高峰,平均捕获率为3.76%;全年均可繁殖,在4月和10月出现2个繁殖高峰期,平均怀孕率为39.47%和28.46%;种群性比(♀/♂)为0.83,多年平均怀孕率为19.45%,平均胎仔数6.38只,多年平均睾丸下降率39.35%;不同年龄组种群繁殖力存在显著差异;每年春季(3月)和秋季(8-9月)是住宅区灭鼠的关键时期。
In order to find out the law of population dynamics and reproduction of Rattus norvegicus, the rat specimens were investigated and collected monthly in fixed points of residential areas then to measure in vitro and record sex, pregnancy, mean litter size, rate of scrotal testis presence and reproductive index. The 19 years monitoring results from 1990 to 2008 showed that the dominant species of residential rodents in Sandu county is R. norvegicus, accounting for 50.34% of the total rodents. R. norvegicus occurs annually and reaches a peak population in June with an average capture rate of 3. 76 %, and reaches two reproductive peaks in April and in October with the average pregnancy rate of 39.47% and 28.46%. During the research period the sex ratio, average annual pregnancy rate, an average mean litter size, annual rate of serotal testis presence are 0. 83, 19. 45%, 6. 38 and 39.35%, respectively. There are significant variations in population reproductive capacity among different age groups. The crucial periods for exterminating residential rodents are March in spring and from August to September in autumn.
出处
《贵州农业科学》
CAS
北大核心
2009年第7期83-85,共3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
种群动态
繁殖规律
三都
贵州
Rattus norvegicus
population dynamics
law of reproduction
Sandu county
Guizhou
作者简介
周朝霞（1973-），女，农艺师，从事植物保护技术推广工作。E-mail：sdxzzx7071@21cn.com
