摘要
为完善贵州省农区主要害鼠种群年龄鉴定划分标准体系建设内容,对2002—2009年贵州省余庆、三都、息烽、关岭4个县捕获的186只黄胸鼠(雌鼠105只,雄鼠81只)胴体重数据进行统计分析,结果表明:黄胸鼠平均胴体重为(72.86±32.80)g,雌、雄鼠之间胴体重差异不显著。根据胴体重的频次分配特征,参照繁殖状况,将黄胸鼠划分为5个年龄组,制定了各年龄组的胴体重划分标准:幼年组(Ⅰ),胴体重小于或等于30.0g;亚成年组(Ⅱ),30.1～60.0g;成年Ⅰ组(Ⅲ),60.1～90.0g;成年Ⅱ组(Ⅳ),90.1～120.0g;老年组(Ⅴ),120.0g以上。不同年龄组胴体重、体重、体长、尾长、后足长、耳长之间具有极显著差异,随着种群年龄的增长而不断增加。种群年龄组成具有明显的季节变化特征。
The carcass weight of 186 samples of Rattus tanezumi （105 females, and 81 males） captured from Yuqing, Sandu, Xifeng and Guanling counties of Guizhou province were statistically analyzed to improve the division standard system of age identification of main agricultural rodent populations in Guizhou. The results showed that the mean carcass weight was （72. 86 ±32. 80）g and there was no significant difference between male and female rodents. 5 age groups were divided according to the frequency distribution characteristic of carcass weight and reproduction situation to make the division standard of carcass weight of different age groups. The carcass weight of young, sub-adult, adult Ⅰ , adult Ⅱ and old-age group were≤30. 0 g,30. 1-60.0 g, 60. 1-90. 0 g, 90. 1-120. 0 g ,and〉120. 0 g respectively. There were very significant differences in carcass weight, body weight, body length, tail length, hind length and ear length between different age groups, and these indexes increased continuously with increment of population age. The composition of population age was of an obvious seasonal variation characteristic.
出处
《贵州农业科学》
CAS
北大核心
2010年第3期110-113,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资助项目"褐家鼠
高山姬鼠监测技术研究"[黔省专合字(2007)105]
合肥市"15851人才工程"第一层次培养人才在研项目[合肥市15851人才办(2008)9]
关键词
黄胸鼠
年龄鉴定
胴体重
划分标准
繁殖
年龄组成
Rattus tanezumi
age identification
carcass weight
division standard
reproduction
age composition
