密度对十斑大瓢虫不同虫态生存的影响  

Effect of Density on the Survival of Megalocaria dilatata in Different Stages

作　　者：梁辉 邓全 刘国[1] 陈河竹 马鹏 李斌[3] 刘东阳[1] 余佳敏 江连强[1] 蒲德强[2] LIANG Hui;DENG Quan;LIU Guo;CHEN Hezhu;MA Peng;LI Bin;LIU Dongyang;YU Jiamin;JIANG Lianqiang;PU Deqiang(Liangshan Municipal Tobacco Company,Xichang Sichuan 615000;Institute of Plant Protection,Sichuan Academy of Agricultural Sciences,Chengdu 610066;Sichuan Tobacco Company,Chengdu 610041)

机构地区：[1]四川省烟草公司凉山州公司,四川西昌615000 [2]四川省农业科学院植物保护研究所,成都610066 [3]四川省烟草公司,成都610041

出　　处：《中国农学通报》2025年第8期105-110,共6页Chinese Agricultural Science Bulletin

基　　金：四川省烟草公司科技项目“天敌昆虫防治媒介害虫技术研究与应用”(SCYC202212)。

摘　　要：为了明确不同容积-密度组合饲养对十斑大瓢虫各虫态发育历期、存活率及蛹和成虫重量的影响,在25℃、相对湿度60%~80%、光照周期10 L:14 D条件下,通过组合3种容器(A:1000 mL;B:1500 mL;C:2000 mL)和3种密度(15、20、25头),饲喂、记录、分析十斑大瓢虫各虫态发育历期、存活率以及蛹和成虫重量。研究结果表明,十斑大瓢虫的存活曲线随龄期增长呈“S”型下降趋势,各处理发育历期从长到短依次为C_(3)>C_(1)>A_(1)=C_(2)>A_(3)>A_(2)=B_(2)>B_(1)>B_(3),B组的平均发育时间最短。各处理1—2龄幼虫期和蛹期存活率较低,B_(2)处理的成蛹率为76.67%,成虫率为73.33%,高于其他处理。各处理蛹期的重量从高到低依次为A_(1)>C_(2)>C_(3)>B_(1)>A_(3)>C_(1)>B_(3)>A_(2)>B_(2),成虫的重量从高到低依次为B_(1)>B_(3)>B_(2)>C_(2)>C_(3)>C_(1)>A_(2)>A_(3)>A_(1)。综上所述,十斑大瓢虫较优饲养容器应选择B_(2)处理,即1500 mL饲养密度为20头/盒最佳。本研究为十斑大瓢虫幼虫的高效繁育提供理论基础。In order to clarify the effects of rearing with different volume-density combinations on the developmental duration,survival rate,and weight of pupae and adults of the ten-spotted ladybird beetles,under conditions of 25℃,relative humidity of 60%to 80%,and a light cycle of 10 L:14 D,three containers(A:1000 mL;B:1500 mL;C:2000 mL)and 3 densities(15 heads;20 heads;25 heads),feeding,recording and analyzing the development period,survival rate,pupal and adult weight of each insect of M.dilatata.The results showed that the survival curve of M.dilatata showed an"S"downward trend with the growth of instar,and the development duration of each treatment was C_(3)>C_(1)>A_(1)=C_(2)>A_(3)>A_(2)=B_(2)>B_(1)>B_(3),and the average development time of group B was the shortest.The survival rate of the 1st and 2nd instar larval stage and pupal stage of each treatment was lower,and the pupation rate and adult rate of B_(2)treatment were 76.67%and 73.33%,which were higher than those of the other treatments.The weight of each treatment at pupal stage from high to low was A_(1)>C_(2)>C_(3)>B_(1)>A_(3)>C_(1)>B_(3)>A_(2)>B_(2),and the weight of adults from high to low was B_(1)>B_(3)>B_(2)>C_(2)>C_(3)>C_(1)>A_(2)>A_(3)>A_(1).In summary,the best feeding container for M.dilatata should be B_(2)treatment,that is,1500 mL feeding density of 20 heads/box is the best.This study provides a theoretical basis for the efficient breeding of larvae of M.dilatata.

关 键 词：蚜虫 十斑大瓢虫 幼虫 密度 生物防治 容积-密度组合 发育历期 存活率 重量 

分 类 号：S186[农业科学—农业基础科学]