Optimal management strategy of insecticide resistance under various insect life histories: Heterogeneous timing of selection and interpatch dispersal

Masaaki Sudo, Daisuke Takahashi, David A. Andow, Yoshito Suzuki, Takehiko Yamanaka

Research output: Contribution to journalArticlepeer-review

31 Scopus citations

Abstract

Although theoretical studies have shown that the mixture strategy, which uses multiple toxins simultaneously, can effectively delay the evolution of insecticide resistance, whether it is the optimal management strategy under different insect life histories and insecticide types remains unknown. To test the robustness of this management strategy over different life histories, we developed a series of simulation models that cover almost all the diploid insect types and have the same basic structure describing pest population dynamics and resistance evolution with discrete time steps. For each of two insecticidal toxins, independent one-locus two-allele autosomal inheritance of resistance was assumed. The simulations demonstrated the optimality of the mixture strategy either when insecticide efficacy was incomplete or when some part of the population disperses between patches before mating. The rotation strategy, which uses one insecticide on one pest generation and a different one on the next, did not differ from sequential usage in the time to resistance, except when dominance was low. It was the optimal strategy when insecticide efficacy was high and premating selection and dispersal occur.

Original languageEnglish (US)
Pages (from-to)271-283
Number of pages13
JournalEvolutionary Applications
Volume11
Issue number2
DOIs
StatePublished - Feb 1 2018

Bibliographical note

Funding Information:
The work was supported by a grant from the Ministry of Agriculture, Forestry, and Fisheries of Japan (Genomics-based Technology for Agricultural Improvement, PRM07). We thank Dr. Satoshi Takahashi, Dr. Shun’ichi Miyai, Dr. TarD? Adati, Dr. Mika Murata, Dr. Yukie Sato, and Dr. Youichi Kobori for their valuable suggestions.

Publisher Copyright:
© 2017 The Authors. Evolutionary Applications published by John Wiley & Sons Ltd

Keywords

  • high-dose/refuge
  • interpatch dispersal
  • pesticide rotation
  • population-based model
  • pyramiding
  • selection pressure

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