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Incorporating selection pressures into risk predictions of chemical resistance evolution in pest organisms

View ORCID ProfileJoshua A. Thia, View ORCID ProfileJames Maino, Alicia Kelly, View ORCID ProfileAry A. Hoffmann, View ORCID ProfilePaul A. Umina
doi: https://doi.org/10.1101/2022.04.18.488707
Joshua A. Thia
1Bio21 Institute, School of BioSciences, University of Melbourne, Parkville, VIC, Australia
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  • For correspondence: joshua.thia@unimelb.edu.au josh.thia@live.com
James Maino
1Bio21 Institute, School of BioSciences, University of Melbourne, Parkville, VIC, Australia
2Cesar Australia, Brunswick, VIC, Australia
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Alicia Kelly
1Bio21 Institute, School of BioSciences, University of Melbourne, Parkville, VIC, Australia
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Ary A. Hoffmann
1Bio21 Institute, School of BioSciences, University of Melbourne, Parkville, VIC, Australia
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Paul A. Umina
1Bio21 Institute, School of BioSciences, University of Melbourne, Parkville, VIC, Australia
2Cesar Australia, Brunswick, VIC, Australia
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ABSTRACT

The evolution of chemical resistance in pests is a global threat to food security and human health, yet resistance issues are mostly dealt with after they occur. Predictive models of resistance risk provide an opportunity for field practitioners to implement proactive strategies to manage pest species more effectively. These models require identification of variables that are associated with resistance risk. Phagy and voltinism, for example, have been previously shown as useful predictors of resistance evolution. Yet despite the importance of chemical selection pressure in resistance evolution, this predictor has been difficult to incorporate into predictive models due to incomplete and (or) poor datasets on chemical usage patterns. Here we test whether chemical registrations of pesticide products can act as a proxy for selection pressures in predictive models. We obtained pesticide product registrations from publicly available chemical databases for 427 agricultural arthropod pest species in the USA and 209 Australian species. We constructed Bayesian logistic regressions of resistance status as a function of the number of pesticide product registrations for 42 chemical Mode of Action (MoA) groups, as well as phagy and voltinism. These models were well supported by our data and cross-validation analyses and could discriminate between observations of resistance and susceptibility in both USA and Australian species sets. Moreover, we found strong support for a positive correlation between pesticide product registrations and resistance status. We propose a “registration–selection–resistance” hypothesis to explain this positive association, involving a positive feedback loop between marketing and social factors of pesticide use with the evolutionary processes of selection and adaptation. Pesticide product registrations provide a predictive variable that is specific to both pest species and chemical MoA groups. Our work aids the development of predictive models for proactive resistance management, combining ecological and operational factors, with broad applicability across a suite of agricultural pests, including weeds and fungi.

Competing Interest Statement

The authors have declared no competing interest.

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted April 19, 2022.
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Incorporating selection pressures into risk predictions of chemical resistance evolution in pest organisms
Joshua A. Thia, James Maino, Alicia Kelly, Ary A. Hoffmann, Paul A. Umina
bioRxiv 2022.04.18.488707; doi: https://doi.org/10.1101/2022.04.18.488707
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Incorporating selection pressures into risk predictions of chemical resistance evolution in pest organisms
Joshua A. Thia, James Maino, Alicia Kelly, Ary A. Hoffmann, Paul A. Umina
bioRxiv 2022.04.18.488707; doi: https://doi.org/10.1101/2022.04.18.488707

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