scholarly journals Insecticide resistance evolution with mixtures and sequences: a model-based explanation

2018 ◽  
Vol 17 (1) ◽  
Author(s):  
Andy South ◽  
Ian M. Hastings
Keyword(s):  
Insecticide Resistance ◽  
Resistance Evolution ◽  
Model Based

Evolution of Drosophila insecticide resistance

Genome ◽  
1993 ◽  
Vol 36 (1) ◽  
pp. 1-7 ◽  
Author(s):  
R. A. Morton
Keyword(s):  
Insecticide Resistance ◽  
Quantitative Traits ◽  
Molecular Genetic ◽  
Resistance Evolution ◽  
Target Molecules ◽  
Genetic Techniques ◽  
The Cost ◽  
The Impact ◽  
The Relationship ◽  
Selection Of

The impact of insecticide resistance is well documented. It includes the toxic effects of pesticides on the environment and the cost of the increased amounts of insecticides required to effectively control resistant insects. Resistance evolves by the selection of genes that confer tolerance to insecticides. Several resistance genes have been identified and cloned in Drosophila, including genes for mutant target molecules and genes that increase insecticide degradation. Drosophila is a useful system to understand the evolution of quantitative traits in general as well as the population genetics of insecticide resistance. Through it, we may hope to understand the relationship between discrete genetic change and continuously varying characters. In addition, molecular genetic techniques developed using Drosophila can eventually be transferred to other insects in order to help control pest populations.Key words: insecticide resistance, evolution of tolerance, selection of resistant genes, molecular genetics, Drosophila.

Determinants of Insecticide Resistance Evolution: Comparative Analysis Among Heliothines

2022 ◽  
Vol 67 (1) ◽  
pp. 387-406
Author(s):  
T.K. Walsh ◽  
D.G. Heckel ◽  
Yidong Wu ◽  
S. Downes ◽  
K.H.J. Gordon ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Helicoverpa Zea ◽  
Management Practices ◽  
Ecological Factors ◽  
Comparative Approach ◽  
Pest Species ◽  
High Genetic Diversity ◽  
Helicoverpa Assulta ◽  
Genetic Characteristics ◽  
Resistance Evolution

It is increasingly clear that pest species vary widely in their propensities to develop insecticide resistance. This review uses a comparative approach to analyze the key pest management practices and ecological and biochemical or genetic characteristics of the target that contribute to this variation. We focus on six heliothine species, three of which, Helicoverpa armigera, Heliothis virescens, and Helicoverpa zea, have developed resistances to many pesticide classes. The three others, Helicoverpa punctigera, Helicoverpa assulta, and Helicoverpa gelotopoeon, also significant pests, have developed resistance to very few pesticide classes. We find that host range and movement between alternate hosts are key ecological traits that influence effective selection intensities for resistance. Operational issues are also critical; area-wide, cross-pesticide management practices that account for these ecological factors are key to reducing selection intensity. Without such management, treatment using broad-spectrum chemicals serves to multiply the effects of host plant preference, preadaptive detoxification ability, and high genetic diversity to create a pesticide treadmill for the three high-propensity species.Without rigorous ongoing management, such a treadmill could still develop for newer, more selective chemistries and insecticidal transgenic crops.

Comparisons Between Resistance Management Strategies for Insects and Weeds

1995 ◽  
Vol 9 (4) ◽  
pp. 830-839 ◽  
Author(s):  
Fred Gould
Keyword(s):  
Population Structure ◽  
Insecticide Resistance ◽  
Herbicide Resistance ◽  
Management Strategies ◽  
Resistance Management ◽  
Basic Research ◽  
Resistance Literature ◽  
Resistance Evolution ◽  
The Commons ◽  
Structure Lead

Problems with insecticide resistance have long plagued the field of economic entomology. Genetic, biochemical, and ecological information on insects has been used to develop strategies to slow the rate of insecticide resistance evolution. Documented cases of herbicide resistance have increased dramatically over the past 10 yr. This paper compares some aspects of insect and weed biology that can be used in determining whether or not resistance management strategies developed for insects are likely to be useful in combating herbicide resistance. Differences between insects and weeds in terms of genetic architecture, mating systems, and population structure lead to differences in the expected efficacy of some resistance management strategies. Because of the localized population structure of some weeds, it may be easier to get farmers to participate in herbicide resistance management programs and avoid a “tragedy of the commons.” A review of the herbicide resistance literature reveals a number of areas of basic research on ecology and genetics of weeds that could help in designing more appropriate resistance management programs.

scholarly journals The role of structural variants in pest adaptation and genome evolution of the Colorado potato beetle, Leptinotarsa decemlineata (Say)

2021 ◽  
Author(s):  
Zachary Cohen ◽  
D J Hawthorne ◽  
Sean Schoville
Keyword(s):  
Insecticide Resistance ◽  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
Similar Proportion ◽  
Nucleotide Polymorphisms ◽  
Structural Variations ◽  
Nucleotide Substitutions ◽  
Resistance Evolution ◽  
Potato Beetle ◽  
Leptinotarsa Decemlineata Say

Structural variations (SVs) have been associated with genetic diversity and adaptation in diverse taxa. Despite these observations, it is not yet clear what their relative importance is for microevolution, especially with respect to known drivers of diversity, e.g., nucleotide substitutions, in rapidly adapting species. Here we examine the significance of SVs in pesticide resistance evolution of the agricultural super-pest, the Colorado potato beetle, Leptinotarsa decemlineata. By employing a trio-binning procedure, we develop near chromosomal reference genomes to characterize structural variation within this species. These updated assemblies represent >100-fold improvement of contiguity and include derived pest and ancestral non-pest individuals. We identify >200,000 SVs, which appear to be non-randomly distributed across the genome as they co-occur with transposable elements. SVs intersect exons for genes associated with insecticide resistance, development, and transcription, most notably cytochrome P450 (CYP) genes. To understand the role that SVs might play in adaptation, we incorporate an additional 66 genomes among pest and non-pest populations of North America into the SV graph. Single nucleotide polymorphisms (SNPs) and SVs have a similar proportion in coding and non-coding regions of the genome, but there is a deficit of SNPs in SVs, suggesting SVs may be under selection. Using multiple lines of evidence, we identify 28 positively selected genes that include 337 SVs and 442 outlier SNPs. Among these, there are four associated with insecticide resistance. Two of these genes (CYP4g15 and glycosyltransferase-13) are physically linked by a structural variant and have previously been shown to be co-induced during insecticide exposure.

scholarly journals Forty Years of Erratic Insecticide Resistance Evolution in the Mosquito Culex pipiens

PLoS Genetics ◽  
2007 ◽  
Vol 3 (11) ◽  
pp. e205 ◽  
Author(s):  
Pierrick Labbé ◽  
Claire Berticat ◽  
Arnaud Berthomieu ◽  
Sandra Unal ◽  
Clothilde Bernard ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Culex Pipiens ◽  
Resistance Evolution

scholarly journals Selective sweeps in a nutshell; the genomic footprint of rapid insecticide resistance evolution in an insect

2019 ◽  
Author(s):  
Bernarda Calla ◽  
Mark Demkovich ◽  
Joel P. Siegel ◽  
João Paulo Gomes Viana ◽  
Kim K.O. Walden ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Pyrethroid Resistance ◽  
Insect Pest ◽  
Natural Populations ◽  
Central Valley ◽  
Agricultural Pests ◽  
Long Term Effects ◽  
Amyelois Transitella ◽  
Resistance Evolution ◽  
Gene Coding

AbstractRelatively few genome-wide population studies of field-acquired insecticide resistance have been carried out on agricultural pests. Recently acquired bifenthrin resistance in a population of the navel orangeworm (Amyelois transitella), the main insect pest of almond orchards in California, provided an opportunity to examine the short- and long-term effects of heavy insecticide usage in the population genomic landscape of this species. We re-sequenced the genomes of three contemporary A. transitella natural populations differing in bifenthrin resistance status and characterized their population genetics parameters, in the process we detected an exceptionally large selective sweep in all populations. This sweep has virtually no polymorphisms and extends up to 1.3 Mb (spanning 43 genes) in the resistant population. We analyzed the possible causes of this unusually strong population genetic signature, and found genes in the sweep that are associated with DDT and pyrethroid resistance including a cluster of cytochrome P450 coding genes and the gene coding for the small conductance sodium channel “para”. Moreover, we found that the sequence along the sweep is nearly identical in the genome assembled from a strain founded in 1966, suggesting that the underpinning for insecticide resistance may have been laid a half-century ago when the California Central Valley experienced massive area-wide applications of DDT for pest control. Our findings are consistent with a scenario whereby insecticide resistance in this species evolved as a stacking of selective pressures that started decades ago and that effectively reduced variation in a region of the genome containing several genes associated with resistance to insecticides with a shared target site and mechanism of action.

scholarly journals Insecticide resistance in field populations of the tomato fruitworm, Helicoverpa armigera, from Senegal

2020 ◽  
Vol 14 (1) ◽  
pp. 181-191
Author(s):  
Serigne Omar Sene ◽  
Etienne Tendeng ◽  
Mamadou Diatte ◽  
Serigne Sylla ◽  
Babacar Labou ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Helicoverpa Armigera ◽  
Cropping Systems ◽  
Resistance Mechanisms ◽  
Cross Resistance ◽  
Metabolic Resistance ◽  
Resistance Evolution ◽  
The North ◽  
Helicoverpa Armígera ◽  
Lepidoptera Noctuidae

Monitoring of the evolution of insecticide resistance in the field is crucial to prevent pest control issues. The present study was conducted to assess insecticide resistance status of the fruitworm, Helicoverpa armigera (Hübner) (Lepidoptera, Noctuidae), the most destructive pest of field-grown tomato in Senegal. A sample of 11- 15 field populations were monitored for their susceptibility to abamectin, deltamethrin, and profenofos, using a standard leaf-dip bioassay method. Resistance ratios ranged from 1- to 30-fold to abamectin (4/15 populations with RR>10), 7- to 112-fold to deltamethrin (11/12 populations with RR>10), and 1- to 29-fold to profenofos (3/11 populations with RR>10). This indicates that resistance evolution to deltamethrin was widespread among field populations of H. armigera. However, an increasing trend of resistance to deltamethrin was observed from the South to the North of Niayes. Susceptibility to abamectin and profenofos was generally high but showed that resistance might be evolving within some populations. In addition, signs of cross-resistance to abamectin were detected, suggesting possible metabolic resistance mechanisms already selected in pyrethroid-resistant populations. The recorded high levels of pyrethroids resistance are a concern for the control of H. armigera in Senegal as the country is being currently embarking into economic expansion of tomato cropping systems. © 2020 International Formulae Group. All rights reserved. Keywords: Insecticide resistance, pyrethroids, avermectins, OPs, Helicoverpa armigera, West Africa

scholarly journals Selective sweeps in a nutshell: the genomic footprint of rapid insecticide resistance evolution in the almond agroecosystem

2020 ◽  
Author(s):  
Bernarda Calla ◽  
Mark Demkovich ◽  
Joel P Siegel ◽  
João Paulo Gomes Viana ◽  
Kim K O Walden ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Central Valley ◽  
Gene Encoding ◽  
Amyelois Transitella ◽  
P450 Gene ◽  
Rapid Acquisition ◽  
Resistance Evolution ◽  
Arthropod Species ◽  
Genomic Landscape ◽  
Induced Changes

Abstract Among the most familiar forms of human-driven evolution on ecological time scales is the rapid acquisition of resistance to pesticides by insects. Since the widespread adoption of synthetic organic insecticides in the mid-twentieth century, over 500 arthropod species have evolved resistance to at least one insecticide. Efforts to determine the genetic bases of insecticide resistance have historically focused on individual loci, but the availability of genomic tools has facilitated the screening of genome-wide characteristics. We re-sequenced three contemporary populations of the navel orangeworm (Amyelois transitella), the principal pest of almond orchards in California, differing in bifenthrin resistance status to examine insecticide-induced changes in the population genomic landscape of this species. We detected an exceptionally large region with virtually no polymorphisms, extending to up to 1.3 Mb in the resistant population. This selective sweep includes genes associated with pyrethroid and DDT resistance, including a cytochrome P450 gene cluster and the gene encoding the voltage-gated sodium channel para. Moreover, the sequence along the sweep is nearly identical in the genome assembled from a population founded in 1966, suggesting that the foundation for insecticide resistance may date back a half-century, when California’s Central Valley experienced massive area-wide applications of DDT for pest control.

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