Previous Articles Next Articles
LI Shibin, CHEN Anguo, LI Bo, WANG Yong, GUO Cong, LIU Huifen
Online:
Published:
李世斌, 陈安国, 李波, 郭聪, 王勇, 刘辉芬
Abstract: The determination of the age groups of Rattus norvegicus were studied with data from 1O61 rats captured from the farm area of Dongting Plain,Hunan.With the body weight without viscera as a major indicator and the characteristics of reproductive organs as references,the Rattus norvegicus, were divided into 5 age groups:Ⅰ.Junior,female<60g,male< 70g;Ⅱ. Juvenile, female 60-99g,male 7O-119g; Ⅲ. adult I,female 100— 139g,male l20— 169g;Ⅳ.adut Ⅱ,female 140- 189g,male 170-219g;Ⅴ.Old,female> 190g,male>220g.The relations between age groups and the body weight,body length,tail Iength and reproduction were studied.The characteristics of seasonal changes of the population age composition were:age group Ⅲ and Ⅳ were the dominant parts in the begining of spring,age group Ⅰ andⅡ increased obviously in the begining of summer,each age group has a certain proportion from July to September, age group Ⅱ and Ⅲ were superior in winter.
Key words: Rattus norvegicus, Age determination, Population age structure
摘要: 本文采用1986年l0月-1989年12月在洞庭平原收集的褐家鼠(Rattus norvegicus)标本,以胴体重作指标, 参考繁殖特征,将褐家鼠划分5个年龄组: I.幼体组,雌鼠<60克, 雄鼠<70克;Ⅱ.亚成体组,雌鼠60—99克,雄鼠70-119克;Ⅲ.成体I组,雌鼠100~139克,雄鼠l20—169克;Ⅳ.成体Ⅱ组,雌鼠140-189克,雄鼠170一219克;Ⅴ.老体组,雌鼠>190克,雄鼠>220克。种群年龄结构的季节动态特征是:开春时以 Ⅲ、Ⅳ组占优势,初夏时I、Ⅱ组明显增加, 7、8、9月各年龄组比例较均匀,冬季以Ⅱ、Ⅲ组为主。还探讨了年龄与体重,体长、尾长及繁殖率的相互关系。
关键词: 褐家鼠, 年龄分组, 种群年龄结构
LI Shibin, CHEN Anguo, LI Bo, WANG Yong, GUO Cong, LIU Huifen. AGE DETERMINATION AND AGE C0MPOSITION OF RATTUS NORVEGICUS POPULATION ON DONGTING PLAIN[J]. .
李世斌, 陈安国, 李波, 郭聪, 王勇, 刘辉芬. 洞庭平原褐家鼠年龄分组及种群年龄动态分析[J]. .
0 / / Recommend
Add to citation manager EndNote|Ris|BibTeX
URL: https://www.mammal.cn/EN/
https://www.mammal.cn/EN/Y1993/V13/I2/123