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Evidence of enhanced reproductive performance and lack-of-fitness costs among soybean aphids, Aphis glycines, with varying levels of pyrethroid resistance.
Pest Manag Sci. 2022 May; 78(5):2000-2010.PM

Abstract

BACKGROUND

Foliar application of insecticides is the main strategy to manage soybean aphid, Aphis glycines (Hemiptera: Aphididae), in the northcentral United States. Subpopulations of A. glycines have multiple nonsynonymous mutations in the voltage-gated sodium channel (vgsc) genes that are associated with pyrethroid resistance. We explored if fitness costs are associated with phenotypes conferred by vgsc mutations using life table analyses. We predicted that there would be significant differences between pyrethroid susceptibility and field-collected, parthenogenetic isofemale clones with differing, nonsynonymous mutations in vgsc genes.

RESULTS

Estimated resistance ratios for the pyrethroid-resistant clones ranged from 3.1 to 37.58 and 5.6 to 53.91 for lambda-cyhalothrin and bifenthrin, respectively. Although life table analyses revealed some biological and demographic parameters to be significantly different among the clonal lines, there was no association between levels of pyrethroid resistance and a decline in fitness. By contrast, one of the most resistant clonal lines (SBA-MN1-2017) had a significantly higher finite rate of increase, intrinsic rate of increase and greater overall fitness compared to the susceptible control and other pyrethroid-resistant clonal lines.

CONCLUSIONS

Our life history analysis suggests that there are no negative pleotropic effects associated with the pyrethroid resistance in the clonal A. glycines lines used in this study. We discuss the potential impact of these results on efficacies of insecticide resistance management (IRM) and integrated pest management (IPM) plans directed at delaying the spread of pyrethroid-resistant A. glycines.

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Authors+Show Affiliations

Valmorbida I
Department of Entomology, Iowa State University, Ames, IA, USA.
Coates BS
United States Department of Agriculture, Agricultural Research Service, Corn Insects & Crop Genetics Research, Ames, IA, USA.
Hodgson EW
Department of Entomology, Iowa State University, Ames, IA, USA.
Ryan M
Corteva Agriscience, Agriculture Division of DowDuPont, Dallas Center, IA, USA.
O'Neal ME
Department of Entomology, Iowa State University, Ames, IA, USA.

MeSH

AnimalsAphidsInsecticide ResistanceInsecticidesPyrethrinsSoybeans

Pub Type(s)

Journal Article

Language

eng

PubMed ID

35102702

Citation

Valmorbida, Ivair, et al. "Evidence of Enhanced Reproductive Performance and Lack-of-fitness Costs Among Soybean Aphids, Aphis Glycines, With Varying Levels of Pyrethroid Resistance." Pest Management Science, vol. 78, no. 5, 2022, pp. 2000-2010.
Valmorbida I, Coates BS, Hodgson EW, et al. Evidence of enhanced reproductive performance and lack-of-fitness costs among soybean aphids, Aphis glycines, with varying levels of pyrethroid resistance. Pest Manag Sci. 2022;78(5):2000-2010.
Valmorbida, I., Coates, B. S., Hodgson, E. W., Ryan, M., & O'Neal, M. E. (2022). Evidence of enhanced reproductive performance and lack-of-fitness costs among soybean aphids, Aphis glycines, with varying levels of pyrethroid resistance. Pest Management Science, 78(5), 2000-2010. https://doi.org/10.1002/ps.6820
Valmorbida I, et al. Evidence of Enhanced Reproductive Performance and Lack-of-fitness Costs Among Soybean Aphids, Aphis Glycines, With Varying Levels of Pyrethroid Resistance. Pest Manag Sci. 2022;78(5):2000-2010. PubMed PMID: 35102702.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Evidence of enhanced reproductive performance and lack-of-fitness costs among soybean aphids, Aphis glycines, with varying levels of pyrethroid resistance. AU - Valmorbida,Ivair, AU - Coates,Brad S, AU - Hodgson,Erin W, AU - Ryan,Molly, AU - O'Neal,Matthew E, Y1 - 2022/03/03/ PY - 2022/01/24/revised PY - 2021/11/26/received PY - 2022/01/27/accepted PY - 2022/2/2/pubmed PY - 2022/4/23/medline PY - 2022/2/1/entrez KW - IRM KW - bifenthrin KW - insecticide KW - lambda-cyhalothrin KW - vgsc mutations SP - 2000 EP - 2010 JF - Pest management science JO - Pest Manag Sci VL - 78 IS - 5 N2 - BACKGROUND: Foliar application of insecticides is the main strategy to manage soybean aphid, Aphis glycines (Hemiptera: Aphididae), in the northcentral United States. Subpopulations of A. glycines have multiple nonsynonymous mutations in the voltage-gated sodium channel (vgsc) genes that are associated with pyrethroid resistance. We explored if fitness costs are associated with phenotypes conferred by vgsc mutations using life table analyses. We predicted that there would be significant differences between pyrethroid susceptibility and field-collected, parthenogenetic isofemale clones with differing, nonsynonymous mutations in vgsc genes. RESULTS: Estimated resistance ratios for the pyrethroid-resistant clones ranged from 3.1 to 37.58 and 5.6 to 53.91 for lambda-cyhalothrin and bifenthrin, respectively. Although life table analyses revealed some biological and demographic parameters to be significantly different among the clonal lines, there was no association between levels of pyrethroid resistance and a decline in fitness. By contrast, one of the most resistant clonal lines (SBA-MN1-2017) had a significantly higher finite rate of increase, intrinsic rate of increase and greater overall fitness compared to the susceptible control and other pyrethroid-resistant clonal lines. CONCLUSIONS: Our life history analysis suggests that there are no negative pleotropic effects associated with the pyrethroid resistance in the clonal A. glycines lines used in this study. We discuss the potential impact of these results on efficacies of insecticide resistance management (IRM) and integrated pest management (IPM) plans directed at delaying the spread of pyrethroid-resistant A. glycines. SN - 1526-4998 UR - https://www.unboundmedicine.com/medline/citation/35102702/Evidence_of_enhanced_reproductive_performance_and_lack_of_fitness_costs_among_soybean_aphids_Aphis_glycines_with_varying_levels_of_pyrethroid_resistance_ DB - PRIME DP - Unbound Medicine ER -