应用胴体重鉴定高山姬鼠种群年龄
Identification of Population Age of Apodemus chevieri Using Body Weight without viscera
杨再学 1金星 2郭永旺 3刘晋 2龙贵兴4
作者信息
- 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,贵州贵阳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
- 折叠
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2008～2010年贵州省大方县捕获的285只高山姬鼠(雌鼠138只,雄鼠147只)胴体重数据进行了统计分析.结果表明:高山姬鼠平均胴体重为(16.29±3.41)g.根据胴体重的频次分配特征,参照繁殖状况,将高山姬鼠划分为5个年龄组,制定了各年龄组的胴体重划分标准:幼年组(Ⅰ)(≤12.0 g);亚成年组(Ⅱ)(12.1～16.0 g);成年Ⅰ组(Ⅲ)(16.1～20.0 g);成年Ⅱ组(Ⅳ)(20.1～24.0 g);老年组(V)(＞24.0 g).不同年龄组胴体重之间具有显著差异,随着种群年龄的增长而不断增加.不同年龄组种群繁殖力存在显著差异,随着种群年龄的增长,种群繁殖力不断增加,参与种群繁殖的主要群体为成年Ⅰ组、成年Ⅱ组和老年组,平均怀孕率为41.27%,平均睾丸下降率为97.78%,平均繁殖指数为0.7656.种群年龄组成具有明显的季节变化特征.
Abstract
To improve standard system of population age identification and classification of the main rural rodents in Guizhou Province, we analyzed the body weight without viscera of 285 samples of Apodemus chevieri ( 138 female, 147 male), which were captured from Dafang County of Guizhou Provience from 2008 to 2010.The average body weight without viscera was ( 16.29 ± 3.41 ) g.According to the frequency distribution of weight and reproductive status, the Apedemus chevrieri were divided into 5 age groups.The weight division standard was grouped as juvenile ( ≤12.0 g), sub-adult (12.1 ～ 16.0 g), adult Ⅰ (16.1 ～20.0 g), adult Ⅱ (20.1 ～24.0 g), and old age ( ＞24.0 g).Between groups, there were significant differences in body weight without viscera.With the growth of population age, the indicator increased continuously.Population reproductive capacity of Apodemus chevieri increased gradually with the growth of population age.Adult group Ⅰ, group Ⅱ and the old group were the main reproductive contributors.The average pregnancy rate, average descent rate of testicle and average reproduction index were 41.27％ , 97.78％ and 0.7656, respectively.There was significant seasonal variation in the population age structure.
关键词
高山姬鼠/年龄鉴定/胴体重/划分标准/繁殖/年龄组成Key words
Apodemus chevieri/age identification/body weight without viscera/group standard/reproduction/age structure引用本文复制引用
基金项目
国家农业行业科研专项经费项目(200903004-01)
贵州省优秀科技教育人才省长专项基金(黔省专合字2007105号)
遵义市"15851人才工程"第一层次培养人才在研项目(遵市15851人才办[2008]9号)
出版年
2011
NETL
NSTL
维普
万方数据