Article
 

Laboratory Bioassays to Estimate the Lethal and Sublethal Effects of Various Insecticides and Fungicides on Deraeocoris brevis (Uhler) (Hemiptera: Miridae)

Public Deposited

Downloadable Content

Download PDF
https://ir.library.oregonstate.edu/concern/articles/bk128g61w

Descriptions

Attribute NameValues
Creator
Abstract
  • This laboratory bioassay focused on lethal and sublethal effects of five insecticides (chlorantraniliprole, cyantraniliprole, spinetoram, novaluron, and lambda-cyhalothrin) and two fungicide treatments (sulfur and a mixture of copper hydroxide and mancozeb) on the predatory mired bug Deraeocoris brevis (Uhler) (Hemiptera: Miridae) using second instars and adult males and females. Formulated pesticides were tested using concentrations that were equivalent to the high label rate (1x) [high rate] and 1/10th of that amount (0.1x) [low rate] dissolved in 378.5L of water. Lambda-cyhalothrin was highly toxic to D. brevis nymphs and adults at both rates, while both rates of novaluron were highly toxic to nymphs. Cyantraniliprole, chlorantraniliprole and novaluron were less toxic to adults and chlorantraniliprole and spinetoram were less toxic to nymphs. Both rates of spinetoram caused significant mortality to adults. Fecundity of adult females was negatively affected by the high rates of either novaluron or spinetoram while the fertility was affected only by the high rate of novaluron. The high rate of spinetoram reduced survival of nymphs. Adults treated with spinetoram had reduced longevity. Cyantraniliprole caused some mortality to nymphs and affected their survival. Both rates of sulfur were toxic to nymphs and affected emergence to adults. The mixture of copper hydroxide and mancozeb was less toxic to D. brevis. Neither adult longevity nor sex ratio was affected by the fungicides. The r values for D. brevis treated with lambda-cyhalothrin, novaluron, spinetoram and sulfur were low, indicating these products may have negative impact on population growth.
  • Keywords: lethal and sublethal effects, pear psylla, generalist predator, biological control, reduced-risk insecticides
Resource Type
DOI
Date Available
Date Issued
Citation
  • Amarasekare, K., & Shearer, P. (2013). Laboratory bioassays to estimate the lethal and sublethal effects of various insecticides and fungicides on Deraeocoris brevis (Hemiptera: Miridae). Journal of Economic Entomology, 106(2), 776-785. doi:10.1603/EC12432
Journal Title
Journal Volume
  • 106
Journal Issue/Number
  • 2
Academic Affiliation
Rights Statement
Funding Statement (additional comments about funding)
  • This research was supported in part by grant 2008-04854 from the USDA-NIFA Specialty Crop Research Initiative program. Matching funds were provided by Oregon State University and growers in Hood River County, OR, USA. We thank DuPont Crop Protection, Dow Agrosciences LLC, Chemtura AgroSolutions, Syngenta LLC and Micro Flo Company LLC for providing the pesticides used for this study.
Publisher
Peer Reviewed
Language
Replaces

Relationships

Parents:

This work has no parents.

Items

Thumbnail Title Date Uploaded Visibility Actions
file details ShearerPeterHorticultureLaboratoryBioassaysEstimate.pdf 2017-10-27 Public Download