Chines Journal of Vector Biology and Control ›› 2013, Vol. 24 ›› Issue (1): 39-42.

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Rattus tanezumi age divisions and population analysis in Cangyuan county, Yunnan province, China

LI Qiu-yang, ZHAO Xiu-lan, YANG Bin   

  1. Plant Protection Unit, Agricultural Bureau of Cangyuan County, Cangyuan 677400, Yunnan Province, China
  • Received:2012-08-19 Online:2013-02-20 Published:2013-02-20
  • Supported by:
    Supported by the Special Research Program for Agriculture(No. 200903004-01)

云南省沧源县黄胸鼠种群年龄组的划分及分析

李秋阳, 赵秀兰, 杨滨   

  1. 沧源县农业局植保植检站,云南沧源677400
  • 基金资助:
    国家公益性行业农业科研专项(200903004-01)

Abstract: Objective To establish a standard system for Rattus tanezumi age divisions in Cangyuan county, Yunnan province, China, and to provide a scientific basis for monitoring and control of R. tanezumi. Methods Trap-at-night method was used during 2010-2011 to capture R. tanezumi in all farming areas of the county. The rats were then divided into different age groups based on nes weight. Results One hundred and ninety-nine rats were collected, 170 of which had an average nes weight of (62.65±2.26) g. According to the nes weight while taking into account the reproductive status and morphological characteristics, the rats were divided into five age groups. Division standards for each group were: infancy group (Ⅰ), nes weight ≤30.0 g; junior group (Ⅱ), nes weight 30.1-55.0 g; adultⅠ group (Ⅲ), nes weight 55.1-85.0 g; adultⅡgroup (Ⅳ), nes weight 85.1-115.0 g, and senior group (V), nes weight >115.0 g. T-test showed that the difference between the mean values of each two groups was of statistical significance (P<0.01), while the nes weight and body weight showed a positive correlation with statistical significance. Conclusion Nes weight method is simple, relatively precise and easy for grassroot-level surveillance on rodents. It can be recommended as a main method for age determination of R. tanezumi in the field.

Key words: Age determination, Rattus tanezumi, Nes weight, Cangyuan county

摘要: 目的 建立沧源县黄胸鼠种群年龄鉴定划分标准体系,为监测及防制提供科学依据。方法 采用夹夜法,于2010-2011年在全县农作区捕捉黄胸鼠,用胴体重数据进行统计分析,划分年龄组成。结果 共采集到黄胸鼠标本199只,170只平均胴体重为(62.65±2.26)g;根据胴体重频次,参照繁殖状况和外形特征,将黄胸鼠划分为5个年龄组,制定各年龄组的胴体重划分标准:幼年组(Ⅰ)胴体重≤30.0 g,亚成年组(Ⅱ)(30.1~55.0)g,成年Ⅰ组(Ⅲ)(55.1~85.0)g,成年Ⅱ组(Ⅳ)(85.1~115.0)g,老年组(Ⅴ)>115.0 g;相邻两组均数之间两两比较,经t检验,各组间胴体重差异有统计学意义(P<0.01);胴体重与体重之间亦有统计学意义。结论 胴体重作为黄胸鼠年龄鉴定指标,方法简便,易于操作,结果相对准确,适于基层开展监测工作,可作为黄胸鼠年龄鉴定的主要方法。

关键词: 年龄鉴定, 黄胸鼠, 胴体重, 沧源县

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