大豆荚饲养点蜂缘蝽实验种群生殖力及其种群趋势分析  

Analysis of fertility and population trend of experimental population of Riptortus pedestris fed on soybean pods

作　　者：胡英露 田鑫月 陈蕾 丁宁 李晓凤 高宇 史树森 HU Ying-lu;TIAN Xin-yue;CHEN Lei;DING Ning;LI Xiao-feng;GAO Yu;SHI Shu-sen(College of Plant Protection,Jilin Agricultural University,Changchun 130118,China)

机构地区：[1]吉林农业大学植物保护学院,吉林长春130118

出　　处：《中国油料作物学报》2022年第2期460-466,共7页Chinese Journal of Oil Crop Sciences

基　　金：国家现代农业产业技术体系建设专项(CARS-04);吉林农业大学大学生创新创业训练计划项目(2019044,2020147)。

摘　　要：点蜂缘蝽(Riptortus pedestris)是大豆生产上的重要害虫。为明确结荚期大豆对点蜂缘蝽生殖力及种群发育的影响,为了解种群发生动态、预测预报及制定综合治理措施提供科学依据,在24±1℃恒温下,采用离体豆荚饲养法,系统观测点蜂缘蝽存活和生殖等生物学指标,通过种群生命表分析,进一步探讨其种群生殖力及种群趋势。结果表明,大豆鼓粒期鲜豆荚饲养点蜂缘蝽世代历期为54.69 d;成虫平均寿命为49.18 d,雌雄成虫寿命分别为46.26 d、52.75 d;点蜂缘蝽平均产卵前期为6.60 d,平均产卵历期为36.97 d,平均单雌产卵量为116.62粒;日产卵动态符合逻辑斯蒂回归和指数函数模型,逐日累积产卵进度动态符合指数函数、三项式回归,雌成虫产卵日产卵动态为偏态分布,50%的卵集中产于产卵期前25%时段。生命表分析结果显示,大豆离体鲜豆荚饲养点蜂缘蝽实验种群内禀增长率rm为0.0717,净增值率R0为50.53,周限增长率λ为1.07 d-1,种群倍增时间为9.66 d;种群趋势指数为48.07。可见,大豆离体鲜豆荚可以充分满足点蜂缘蝽个体发育的营养需求,大豆结荚期豆荚是点蜂缘蝽田间种群的主要营养源。Riptortus pedestris is an important pest in soybean production.For further understanding the population dynamics,forecasting and formulating integrated pest management for R.pedestris in soybean fields,fecundity and population development of R.pedestris,biological parameters of viability and fertility were systematically observed using pod culture in vitro at a constant temperature of 24℃±1℃.The fecundity and population trend were further discussed through the analysis on life table of population.Results showed that the generation duration of R.pedestris fed on soybean pods lasted 54.69 d.The average adult life span was 49.18 d,and life spans of male and female adults were 46.26 d and 52.75 d respectively.The average pre-oviposition duration of R.pedestris was 6.60 d.The average oviposition duration was 36.97 d.The average fecundity per female was 116.62.The trends accorded with model of Logistic regression and exponential function.And its daily cumulative fecundity trends accorded with the model of exponential function and trinomial regression.The fecundity trends of female adults showed a skewed distribution.Fifty percent of fecundity were concentrated in the first 25%of the spawning period.The life table analysis showed that intrinsic growth rate(rm)was 0.0717,net value-added rate(R0)was 50.53,finite rate(λ)was 1.07 d-1,population doubling time was 9.66 d,and population trend index was 48.07.Therefore,the fresh soybean pods in vitro could fully meet the nutritional needs of the individual development of R.pedestris,and the pod during podding stage could be a main source of nutrition for R.pedestris population in fields.

关 键 词：点蜂缘蝽 大豆 生命表 内禀增长率 种群趋势指数 

分 类 号：S435.651[农业科学—农业昆虫与害虫防治]