褐家鼠和黄胸鼠体型和头骨物种鉴定特征值筛选  

Screening the critical morphology and skull indices for identifying Rattus norvegicus and Rattus tanezumi

作　　者：陈燕[1] 岳亚先 王涛 甄磊 李冬慧 陶润宇 宋英 王登[1] CHEN Yan;YUE Yaxian;WANG Tao;ZHEN Lei;LI Donghui;TAO Runyu;SONG Ying;WANGDeng(College of Grassland Science and Technology,China Agricultural University,Beijing 100193,China;Agri-Service Suwan Station in Chaohu County,Chaohu 238065,China;State Key Laboratory for Biology of Plant Diseases and Insect Pest,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China)

机构地区：[1]中国农业大学草业科学与技术学院,北京100193 [2]巢湖市苏湾镇农业综合服务站,巢湖238065 [3]中国农业科学院植物保护研究所,植物病虫害生物学国家重点实验室,北京100193

出　　处：《兽类学报》2023年第3期322-332,共11页Acta Theriologica Sinica

基　　金：国家自然科学基金(32072438);科技基础资源调查专项(2019FY100303)。

摘　　要：明确能有效鉴定区分啮齿动物近似种的体型和头骨特征指标,有利于因地制宜地快速、准确鉴定近似种。我们利用一段725 bp Vkorc1基因序列鉴定了36只同域分布的褐家鼠(Rattus norvegicus)(n=31)和黄胸鼠(Rattus tanezumi)(n=5)个体,随后分别就这些样本的胴体重、体长、尾长、耳长和后足长及尾长/体长、耳长/体长、后足长/体长和肥满度等指标的21种指标组,及10只褐家鼠和3只黄胸鼠的2种头骨指标组进行了主成分分析及聚类分析,比较了这些指标组对两物种的分类鉴定结果。结果显示,尾长/体长、耳长/体长和肥满度指标组,及上颊齿列基长、下颊齿列基长、听泡长和听泡宽指标组可将两物种完全区分开。结果为使用体型或头骨指标准确鉴定区分这两物种提供了清晰依据和可靠分析手段。Clarifying the validity of characters that can classify similar rodent species can contribute to defining species quickly and accurately.We identified 36 sympatric rats into R.norvegicus(n=31)and R.tanezumi(n=5)by aligning the partial sequence of Vkorc1 gene(725 bp).Based on the identification results of Vkorc1 gene,we compared the accuracy of the classification and identification results of the two species by principal component analysis and cluster analysis of morphology and skull indices,which included 21 permutations of body weight,body length,tail length,ear length and hind foot length,tail length/body length,hind foot length/body length and fatness,and 2 combining indices of skull metrics.The body metrics combination of tail length/body length,ear length/body length,and fatness accurately classified all individuals of the two species.The skull morphology index combination of the length of the upper cheek tooth row,length of the lower cheek tooth row,length of the tympanic bulla,and width of the tympanic bulla also all individuals of the two species.These results provided the critical body or skull morphological characters and corresponding analytical approaches for classifying and identifying the two species.

关 键 词：Vkorc1基因序列 体型指标 头骨指标 褐家鼠 黄胸鼠 

分 类 号：Q954.1[生物学—动物学]