卵高温胁迫对木薯单爪螨发育与繁殖的影响研究  

Effect of Eggs High Temperature Exposure on the Development and Fecundity of Mononychellus tanajoa(Acari:Tetranychidae)

作　　者：卢芙萍[1,2] 符悦冠[1,2] 经福林[1,2] 赖开枕[2] 郑友枫[2] 卢辉[2] 徐雪莲[2] 陈青[2] 

机构地区：[1]海南大学环境与植物保护学院,海口570228 [2]中国热带农业科学院环境与植物保护研究所/农业部热带作物有害生物综合治理重点实验室/海南省热带农业有害生物监测与控制重点实验室/海南省热带作物病虫害生物防治工程技术研究中心,海南儋州571737

出　　处：《中国农学通报》2012年第21期229-236,共8页Chinese Agricultural Science Bulletin

基　　金：现代农业产业技术体系建设专项资金"木薯产业技术体系害虫防控岗位科学家项目"(CARS-12-hncq);中央级公益性科研院所基本科研业务费专项"重要危险性害螨无害化防控资源的收集与评价"(2011hzs1J014);公益性行业(农业)科研专项资助"入境台湾果蔬危险性有害生物防控新技术研究与示范"(200903034-5);海南省重点科技计划项目"热带作物地下害虫无害化综合防控关键技术研究与示范"(ZDXM20110032);"海南大学‘211工程’建设项目;"海南大学环境与植物保护学院研究生创新平台"

摘　　要：为探讨木薯单爪螨的生态适应性机理,揭示其种群扩散蔓延机制,开展了卵高温胁迫对木薯单爪(螨中雌处生性理长百不发分同育率时与)间及繁(后殖0.代5的、成1影、螨2响、寿4研、命8究、。1。6、结将24果木h表薯)后明单置:爪卵于螨高室卵温温在处(2梯5理℃度显)下高著饲温影养(响3,0木观℃薯、察3单3其℃爪卵、3螨孵6℃的化、发率39育、℃发与、育4繁2历℃殖期)人。、工随后气着代候温性度比箱的升高和处理时间的延长,木薯单爪螨的发育历期显著延长,卵孵化率、后代雌性百分率与后代雌成螨热寿高最温命敏处显感理著时下2h间降以。。上因温(此包度,括越卵高2高h,)温对后胁木在迫薯2显5单℃著爪下影螨均响发不木育能薯与孵单繁化爪殖和螨的完的影成生响任长越何发显发育著育与,历尤繁期其殖;对,4从2卵℃而和高可幼温能螨1影h的为响发木木育薯薯;卵单单爪经爪螨螨42种卵℃群的变化。本研究结果可为木薯单爪螨扩散蔓延范围及生态适应性提供理论依据,为科学制定中国针对木薯单爪螨的检疫政策和防控措施,以防其进一步扩散蔓延提供理论依据和前期工作基础。Temperature was one of the important ecological factors for development and reproduction of Mononychellus tanajoa.In order to learn about the ecological adaptation of M.tanajoa after its invasion into our country and provide a foundation for the monitoring early warning and effective prevention as well as analyze its invasion,diffusion and ecological adaptation mechanism,this study researched the effect of high-temperature treatment to its eggs on the development,reproduction.M.tanajoa eggs were treated for different time（0.5 h,1 h,2 h,4 h,8 h,16 h and 24 h） at a gradient of high-temperature（30℃,33℃,36℃,39℃ and 42℃） in the artificial climate incubator,followed by incubation at room temperature（25℃）.The developing periods,hatchability of the offspring eggs,offspring sex ratio（female percent） and offspring adult mites’ life were observed.The results showed that eggs in high temperature had a great effect on its development and fecundity.With the increasing of temperature and extending of treatment time,its development significantly extended and egg hatching rate,percentage of female offspring and life of female offspring significantly decreased.The higher the temperature was the more significant effects on its development and reproduction.Furthermore,the developments of its egg and larvae were much more significantly affected.Eggs in 42℃ for about more than 2 h would not hatch and finish any development in 25℃;eggs in 42℃ for about 1 h were its most heat-sensitive time.High-temperature stress to the eggs affected the growth,development and fecundity of M.tanajoa,and thereby affected the dynamic variability of the M.tanajoa population.Theses results above would be much helpful for in-deep studies on the mechanism of heat tolerance and ecological adaptation of M.tanajoa and constructed the theory basis and technical support for scientifically forming of quarantine policy and measure for M.tanajoa in China.

关 键 词：木薯单爪螨 卵 高温 发育 繁殖 生态适应性 

分 类 号：S433.2[农业科学—农业昆虫与害虫防治]