Green lacewing Chrysoperla rufilabris(Neuroptera:Chrysopidae)is a potential biological agent for crapemyrtle bark scale(Hemiptera:Eriococcidae)pest management  

作　　者：Bin Wu Runshi Xie Mengmeng Gu Hongmin Qin 

机构地区：[1]Department of Horticultural Sciences,Texas A&M University,College Station,TX 77843,USA [2]Department of Horticultural Sciences,Texas A&M AgriLife Extension Service,College Station,TX 77843,USA [3]Department of Biology,Texas A&M University,College Station,TX 77843,USA

出　　处：《Technology in Horticulture》2022年第1期16-20,共5页园艺技术（英文）

基　　金：supported by TAMU T3246495-2019,Crop Protection and Pest Management project‘Integrated pest management strategies for crape myrtle bark scale,a new exotic pest’(No.2014-70006-22632);Specialty Crop Research Initiative project'Systematic Strategies to Manage Crapemyrtle Bark Scale,An Emerging Exotic Pest'(grant no.2017-51181-26831)from the USDA National Institute of Food and Agriculture.Any opinions,findings,conclusions,or recommendations expressed in this publication are those of the authors and do not necessarily reflect the view of the U.S.Department of Agriculture.

摘　　要：Crapemyrtle bark scale(CMBS;Acanthococcus lagerstroemiae),an invasive sap-sucking hemipteran,has spread across 16 US states.Infestation of CMBS negatively impacts the flowering and reduces the aesthetic quality of crapemyrtles.The widespread use of soil-applied neonicotinoid insecticides to suppress the CMBS infestation may be hazardous to pollinators and other beneficial insects.Natural enemies of CMBS are important agents for developing integrated environmentally friendly management strategies.This study evaluated the performance of larval green lacewing(Chrysoperla rufilabris)as a biocontrol agent of CMBS.Predatory behavior of the larval C.rufilabris upon CMBS was documented under a stereomicroscope using infested crapemyrtle samples collected from different locations in College Station(Texas,USA).Predation potential of C.rufilabris upon CMBS eggs and foraging performance using Y-maze assay were investigated under laboratory conditions.Results confirmed that larval C.rufilabris preyed on CMBS nymphs,eggs,and adult females.The evaluation of predation potential results showed that 3rd instar C.rufilabris consumed significantly more CMBS eggs(176.4±6.9)than 2^(nd)(151.5±6.6)or 1^(st)instar(11.8±1.3)in 24 hours.Results from the Y-maze assay indicated that larval C.rufilabris could target CMBS in the dark,indicating that some cues associated with olfactory response were likely involved when preying on CMBS.This study is the first report that validated C.rufilabris as a natural predator of CMBS and its potential as a biological agent to control CMBS.Future investigation about the olfactory response of larval C.rufilabris to CMBS would benefit the development of environmentally friendly strategies to manage CMBS.

关 键 词：agent POTENTIAL LIKELY 

分 类 号：S48[农业科学—农药学]