嗜虫书虱种群增长模型的研究  

A population growth model for Liposcelis entomophila(Enderlein)(Psocoptera:Liposcelididae)

作　　者：王争艳[1] 何梦婷 鲁玉杰[1] WANG Zheng-Yan;HE Meng-Ting;LU Yu-Jie(School of Food Science and Technology,Henan University of Technology,Zhengzhou 450001,China)

机构地区：[1]河南工业大学粮油食品学院,郑州450001

出　　处：《应用昆虫学报》2020年第2期442-449,共8页Chinese Journal of Applied Entomology

基　　金：国家自然科学基金项目(31601890);河南省科技公关项目(202102110059);河南工业大学河南省省属高校基本科研业务费专项资金(2016XTCX01)。

摘　　要：【目的】构建嗜虫书虱Liposcelis entomophila(Enderlein)在不同环境条件下的种群增长模型,为粮库书虱种群预测预报提供基础数据和理论模型。【方法】通过构建嗜虫书虱实验种群生命表,分析温度、湿度、食物破碎率和种群初始密度对嗜虫书虱种群数量动态的影响,验证种群的指数增长模型,并拟合温湿度与内禀增长率的函数关系。【结果】在温度26-34℃,湿度65%-85%,食物破碎率4%-12%的条件下,温度和湿度对发育历期有显著影响,三者对种群数量趋势指数、净增殖率、内禀增长率的影响均不显著。三者对种群增长影响的主次顺序为:温度>湿度和食物破碎率。嗜虫书虱种群增长的最适条件为温度34℃、相对湿度85%、食物破碎率12%。当种群初始密度为0.26-1.04头/cm2时,嗜虫书虱种群数量呈指数增长。【结论】在22-34℃,相对湿度65%-85%的环境中,嗜虫书虱种群数量动态与温度和湿度的关系可以拟合为Nt=N0EXP[(0.00296T+0.02167RH-0.0372)t]。[Objectives]To provide basic data and theoretical models for the population forecasting of stored grain psocids.[Methods]Population growth models of Liposcelis entomophila(Enderlein)were built under different environmental conditions.On the basis of age-stage life tables of L.entomophila constructed in the laboratory,the effects of temperature,relative humidity,food breakage level and initial population number on population dynamics were evaluated.Exponential growth models of L.entomophila population were validated and the functional relationship between temperature,humidity and intrinsic rate of increase was modelled.[Results]Within a temperature range of 26-34℃,relative humidity of 65%-85%and a food breakage level of 4%-12%,temperature and relative humidity had significant effects on the developmental duration of L.entomophila,but not on the population trend index,net reproduction,or the intrinsic rate of increase.Temperature was the most important factor in the population growth of L.entomophila,followed by relative humidity and food breakage level.The optimum conditions for population growth are 34℃,85%relative humidity and 12%food breakage.With an initial population density of 0.26-1.04 adults/cm2,an exponential growth model can be used to describe population growth.[Conclusion]Within a temperature range of 22-34℃ and a relative humidity of 65%-85%,the relationship between temperature,humidity and population dynamics of L.entomophila can be expressed as Nt=N0 EXP[(0.00296 T+0.02167 RH-0.0372)t].

关 键 词：储粮书虱 温度 相对湿度 食物破碎率 种群初始密度 生命表 种群增长模型 

分 类 号：S379.5[农业科学—农产品加工]