柑橘木虱及分泌物对胡瓜新小绥螨的吸引作用研究  

Responses of the predatory mite Neoseiulus cucumeris to life stages and secretions of Diaphorina citri

作　　者：张艳璇[1,2] 孙莉[1] 林坚贞[1,2] 陈霞[1,2] 季洁[1,2] 

机构地区：[1]福建省农业科学院植物保护研究所,福州350013 [2]福建省农作物害虫天敌资源工程技术研究中心,福州350013

出　　处：《应用昆虫学报》2013年第2期447-453,共7页Chinese Journal of Applied Entomology

基　　金：农业部公益性行业科研专项(201103020);农业部公益性行业科研专项(200903032);国家863项目(2011AA10A201);福建省科技创新平台建设项目(2008N2002);福建省属公益类科研院所基本科研专项(2009R10028-1);科技部农业科技成果转化资金项目(2009GB2C400173);福建省农科院创新重点项目(2007YCXZ03)

摘　　要：在25℃温度条件下，在九里香（Murraya panicuata）嫩枝条上研究柑橘木虱Diaphorina citri Kuwayama混合虫态、卵、低龄若虫、高龄若虫、柑橘木虱分泌物对胡瓜新小绥螨Neoseiulus cucumeirs（Oudemans）雌螨的吸引作用，以探索与评价捕食螨对柑橘木虱各虫态及分泌物的趋向性。研究发现：1．柑橘木虱混合虫态对胡瓜新小绥螨的吸引作用在试验后第2小时经测验达到显著水平（P〈0．05），第3小时达极显著水平（P〈0．01），表明柑橘木虱混合虫态对胡瓜新小绥螨有很强的吸引作用；2．柑橘木虱卵对胡瓜新小绥螨雌成螨无吸引作用；3．试验开始后第1—5小时在试验区胡瓜新小绥螨数量分别高于空白区25．00％、18．33％、13．33％、15．00％和23．33％，柑橘木虱低龄若虫对胡瓜新小绥螨有较强烈的吸引作用；4．柑橘木虱高龄若虫对胡瓜新小绥螨吸引作用在第1小时最高，第2—3小时最低，第4小时开始回升，第5小时可达到51．67％。可见柑橘木虱高龄若虫对胡瓜新小绥螨有一定的吸引作用；5．柑橘木虱分泌物对胡瓜新小绥螨吸引作用在第1小时最高，试验区胡瓜新小绥螨数量高于空白区33．33％、胡瓜新小绥螨不能取食柑橘木虱分泌物，第2小时胡瓜新小绥螨向外逃跑的比率增加。但胡瓜新小绥螨在试验区数量仍高于试验区，柑橘木虱分泌物对胡瓜新小绥螨也有一定的吸引作用。本试验环境开放，模拟自然状态。在柑橘木虱混合虫态发生的情况下，胡瓜新小绥螨对其具备搜寻能力。Movements of the predatory mite Neoseiulus cucumeris （Oudemans） toward different life stages and secretions of Diaphorina citri Kuwayama were investigated an open environment,simulating natural conditions. The response of adult female N. cucumeris to different life stages of D. citri and to the secretions of D. citri on Murraya panicuata shoots was studied using choice tests at 25℃. The results were：1. Female N. cucumeris showed a significant response to mixed life stages of D. cirri after two hours and a highly significant response after three hours,indicating that the response to mixed life stages of D. citri is very strong. 2. Female N. cucumersi were not attracted to D. citri eggs. 3. Hourly counts of the numbers of female N. cucumeris on shoots with young D. citri nymphs in the first five hours of the experiment were, 25.00% ,18.33% , 13.33% , 15.00% and 23.33% higher, respectively, than those on control shoots without D. citri nymphs. 4. The response of predators to old D. citri nymphs was highest at the end of the first hour of the experiment and lowest during the second and third hours. The proportion of predators began to rebound during the fourth hour and had increased to 51.67% by the end of fifth hour. This shows that old D. cirri nymphs are attractive to N. cucumeris. 5. In trials using secretions of D. citri, the number of predators on shoots with secretions was 33.33% higher than on control shoots, one hour after the start of the experiment. At the end of two hours, the proportion of predators departing the treatment shoot had increased but the number on treatment shoots remained higher than on control shoots. This result shows that females of N. cucumersi are attracted to secretions of D. citri.

关 键 词：捕食螨 柑橘木虱 胡瓜新小绥螨 吸引作用 

分 类 号：S436.66[农业科学—农业昆虫与害虫防治]