兽类学报2025，Vol.45Issue(4)：468-476,9.DOI:10.16829/j.slxb.150988
贵州省黑线姬鼠生活史特征
Life history traits in Apodemus agrarius in Guizhou Province
摘要
Abstract
Understanding animal life history traits is fundamental to grasp animal biological and,ecological processes and the mechanisms associated with them.In this study,Apodemus agrarius was trapped monthly in a stationary field in Yuqing County,Guizhou Province from 2016 to 2023.All captured rodents were dissected,and their body mass,sex and reproductive condition was recorded.For pregnant females,the number of fetuses was counted.Additionally,for all ro-dents captured in 2023,the degree of wear on the right chewing surfaces of the maxillary molars and estrus condition were recorded.A criterion of body mass for the age division in A.agrarius in the region was established depending on the reproduction and development condition of each animal.Based on the body mass criterion,we analyzed the age structure in each monthly population,and inferred the generations of each animal in each monthly population combining the monthly pattern in mean body weight of the population over 12 months.We further outlined the complete life history of A.agrarius in the region.The results showed that there are three generations in a complete life cycle of A.agrarius over one year.The breeding intensity exhibited a bimodal curve throughout the year,with the highest peaks occurring in April(spring period)and August(summer and fall period).Most of the animals born in the spring died out until January of the following year,with a life span of approximately 4-9 months.Most of the animals born in the summer and fall live through the winter,and developed into the parents in the spring breeding period of the following year;most of them died out until the period from May to July,with a life span of approximately 8-12 months.The alternation of genera-tions through the cycle of reproduction,growth and development,and death in the species may represent the basic law of survival and reproduction of the population in A.agrarius distributed in the subtropical zone of China.The results pro-vide fundamental data for further ecological studies in this species.关键词
黑线姬鼠/年龄/体质量/代际/生活史Key words
Apodemus agrarius/Age/Weight/Intergeneration/Life history分类
生物科学引用本文复制引用
张一真,白智江,王涛,陈燕,王登..贵州省黑线姬鼠生活史特征[J].兽类学报,2025,45(4):468-476,9.基金项目
国家自然科学基金面上项目(32072438) （32072438）
