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Sublethal Impacts of Novaluron on Tarnished Plant Bug (Hemiptera: Miridae) Adults.
J Econ Entomol. 2021 04 13; 114(2):739-746.JE

Abstract

Tarnished plant bug, Lygus lineolaris Palisot de Beauvois (Hemiptera: Miridae), has become a primary pest of cotton in the Midsouthern United States. Insect growth regulators such as novaluron are an important part of L. lineolaris management. While novaluron is lethal to nymphs, it does not kill adults, so it has been used when nymphs are the primary stage present. However, cotton yield protection was observed from an application of novaluron when adults were the predominant stage present. To explain this, a series of studies were conducted to examine sublethal impacts of novaluron to L. lineolaris adults. Novaluron ingestion by adults reduced hatch rate and sometimes reduced oviposition rate. Ingestion by either males or females reduced hatch rates, but the reduction was greater from female exposure. Contact exposure of adults with novaluron residues within 1 d of application reduced hatch rate by about 50%, but the impact on oviposition was inconsistent. A field study showed reduced hatch rate from contact exposure to mixed-age natural populations, but the overall net reproductive rate was not reduced. Surface exposure of eggs to novaluron did not reduce hatch rate. Overall, exposure of tarnished plant bug adults to novaluron, regardless of adult age or exposure route, reduced egg viability. However, the impact on oviposition rate and net reproductive rate varied with adult age and exposure route. This understanding of sublethal impacts of novaluron, in addition to lethal impacts on nymphs, should be considered when choosing application times to maximize effects on L. lineolaris populations.

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Publisher Full Text (DOI)

Authors+Show Affiliations

Catchot BD
Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi State, MS, USA.
Musser FR
Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi State, MS, USA.
Gore J
Delta Research and Extension Center, Mississippi State University, Stoneville, MS, USA.
Krishnan N
Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi State, MS, USA.
Cook DR
Delta Research and Extension Center, Mississippi State University, Stoneville, MS, USA.
Stewart SD
Department of Entomology, Plant Pathology, and Nematology, The University of Tennessee, Jackson, TN, USA.
Lorenz GM
Department of Entomology, University of Arkansas, Lonoke, AR, USA.
Brown S
LSU AgCenter, Macon Ridge Research Station, Winnsboro, LA, USA.
Seiter N
Department of Crop Sciences, University of Illinois, Urbana, IL, USA.
Catchot AL
Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi State, MS, USA.
Kerns DL
Department of Entomology, Texas A&M University, Texas A&M AgriLife Extension Service, College Station, TX, USA.
Jackson R
Syngenta, Biological Research & Development, Carrolton, MS, USA.
Knighten KS
Department of Biochemistry, Molecular Biology, Entomology, and Plant Pathology, Mississippi State University, Mississippi State, MS, USA.

MeSH

AnimalsFemaleHemipteraHeteropteraMaleNymphOvipositionPhenylurea Compounds

Pub Type(s)

Journal Article
Research Support, U.S. Gov't, Non-P.H.S.

Language

eng

PubMed ID

33576417

Citation

Catchot, Beverly D., et al. "Sublethal Impacts of Novaluron On Tarnished Plant Bug (Hemiptera: Miridae) Adults." Journal of Economic Entomology, vol. 114, no. 2, 2021, pp. 739-746.
Catchot BD, Musser FR, Gore J, et al. Sublethal Impacts of Novaluron on Tarnished Plant Bug (Hemiptera: Miridae) Adults. J Econ Entomol. 2021;114(2):739-746.
Catchot, B. D., Musser, F. R., Gore, J., Krishnan, N., Cook, D. R., Stewart, S. D., Lorenz, G. M., Brown, S., Seiter, N., Catchot, A. L., Kerns, D. L., Jackson, R., & Knighten, K. S. (2021). Sublethal Impacts of Novaluron on Tarnished Plant Bug (Hemiptera: Miridae) Adults. Journal of Economic Entomology, 114(2), 739-746. https://doi.org/10.1093/jee/toab007
Catchot BD, et al. Sublethal Impacts of Novaluron On Tarnished Plant Bug (Hemiptera: Miridae) Adults. J Econ Entomol. 2021 04 13;114(2):739-746. PubMed PMID: 33576417.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Sublethal Impacts of Novaluron on Tarnished Plant Bug (Hemiptera: Miridae) Adults. AU - Catchot,Beverly D, AU - Musser,F R, AU - Gore,J, AU - Krishnan,N, AU - Cook,D R, AU - Stewart,S D, AU - Lorenz,G M, AU - Brown,S, AU - Seiter,N, AU - Catchot,A L, AU - Kerns,D L, AU - Jackson,R, AU - Knighten,K S, PY - 2020/07/10/received PY - 2021/2/13/pubmed PY - 2021/5/22/medline PY - 2021/2/12/entrez KW - fecundity KW - insect growth regulator KW - insecticide KW - net reproductive rate KW - sublethal impact SP - 739 EP - 746 JF - Journal of economic entomology JO - J Econ Entomol VL - 114 IS - 2 N2 - Tarnished plant bug, Lygus lineolaris Palisot de Beauvois (Hemiptera: Miridae), has become a primary pest of cotton in the Midsouthern United States. Insect growth regulators such as novaluron are an important part of L. lineolaris management. While novaluron is lethal to nymphs, it does not kill adults, so it has been used when nymphs are the primary stage present. However, cotton yield protection was observed from an application of novaluron when adults were the predominant stage present. To explain this, a series of studies were conducted to examine sublethal impacts of novaluron to L. lineolaris adults. Novaluron ingestion by adults reduced hatch rate and sometimes reduced oviposition rate. Ingestion by either males or females reduced hatch rates, but the reduction was greater from female exposure. Contact exposure of adults with novaluron residues within 1 d of application reduced hatch rate by about 50%, but the impact on oviposition was inconsistent. A field study showed reduced hatch rate from contact exposure to mixed-age natural populations, but the overall net reproductive rate was not reduced. Surface exposure of eggs to novaluron did not reduce hatch rate. Overall, exposure of tarnished plant bug adults to novaluron, regardless of adult age or exposure route, reduced egg viability. However, the impact on oviposition rate and net reproductive rate varied with adult age and exposure route. This understanding of sublethal impacts of novaluron, in addition to lethal impacts on nymphs, should be considered when choosing application times to maximize effects on L. lineolaris populations. SN - 1938-291X UR - https://www.unboundmedicine.com/medline/citation/33576417/Sublethal_Impacts_of_Novaluron_on_Tarnished_Plant_Bug__Hemiptera:_Miridae__Adults_ DB - PRIME DP - Unbound Medicine ER -