Present status and countermeasures of insecticide resistance in agricultural pests in China

1988 ◽  
Vol 23 (2) ◽  
pp. 189-198 ◽  
Author(s):  
Z. H. Tang ◽  
K. Y. Gong ◽  
Z. P. You
Keyword(s):  
Insecticide Resistance ◽  
Present Status ◽  
Agricultural Pests

Identification of a point mutation in the ace1 gene of Therioaphis trifolli maculata and detection of insecticide resistance by a diagnostic PCR–RFLP assay

2015 ◽  
Vol 105 (6) ◽  
pp. 712-716
Author(s):  
E. AlSuhaibani ◽  
C.C. Voudouris ◽  
R. Al-Atiyat ◽  
A. Kotzamumin ◽  
J. Vontas ◽  
...  
Keyword(s):  
Saudi Arabia ◽  
Insecticide Resistance ◽  
Management Strategies ◽  
Resistance Management ◽  
Resistance Mutation ◽  
Resistance Mechanisms ◽  
Effective Control ◽  
Agricultural Pests ◽  
Resistance Mutations ◽  
Diagnostic Pcr

AbstractAphids are important agricultural pests worldwide. Their control is largely based on chemical insecticides. One species that shows important invasive abilities and host-plant-related differences is Therioaphis trifolii (Monell) (Hemiptera: Aphididae). T. trifolii maculata, also known as spotted alfalfa aphid (SAA), can be very injurious to alfalfa crops in certain regions, such as in Saudi Arabia for effective control it is essential to diagnose and monitor the resistance mechanisms in the SAA populations. In the present study, we analysed acetylcholinesterase (ace) target site insensitivity mechanisms. A 650 bp length DNA containing the putative acetylcholinesterase (ace1) precursor was obtained and compared with other Hemipteran species. The sequences of many individual aphids collected from alfalfa crops in Saudi Arabia were analysed for the presence of resistance mutations: no resistance mutations were found at the resistance mutation loci 302; however, the presence of a serine–phenylalanine substitution (S431F) was identified in one individual. The S431F substitution, has been shown to confer significant levels of both organophosphate and carbamate resistance in other aphid species, and is now found for the first time in T. trifolii. We subsequently developed a simple polymerase chain reaction–restriction fragment length polymorphism assays for the S431F mutation, using a TaqI restriction site destroyed by the S431F mutation. The novel diagnostic assay may support the implementation of Insecticide Resistance Management strategies, for the control of SAA in alfalfa crops in the Kingdom of Saudi Arabia, and other countries worldwide.

scholarly journals Challenges with managing insecticide resistance in agricultural pests, exemplisfied by the whitefly Bemisia tabaci

1998 ◽  
Vol 353 (1376) ◽  
pp. 1757-1767 ◽  
Author(s):  
I. Denholm ◽  
M. Cahill ◽  
T. J. Dennehy ◽  
A. R. Horowitz
Keyword(s):  
Insecticide Resistance ◽  
Bemisia Tabaci ◽  
Management Strategies ◽  
Resistance Management ◽  
Chemical Diversity ◽  
Breeding Cycle ◽  
Agricultural Pests ◽  
Management Options ◽  
Development Of Resistance ◽  
Significant Achievement

For many key agricultural pests, successful management of insecticide resistance depends not only on modifying the way that insecticides are deployed, but also on reducing the total number of treatments applied. Both approaches benefit from a knowledge of the biological characteristics of pests that promote or may retard the development of resistance. For the whitefly Bemisia tabaci (Gennadius), these factors include a haplodiploid breeding system that encourages the rapid selection and fixation of resistance genes, its breeding cycle on a succession of treated or untreated hosts, and its occurrence on and dispersal from high–value crops in greenhouses and glasshouses. These factors, in conjunction with often intensive insecticide use, have led to severe and widespread resistance that now affects several novel as well as conventional control agents. Resistance–management strategies implemented on cotton in Israel, and subsequently in south–western USA, have nonetheless so far succeeded in arresting the resistance treadmill in B. tabaci through a combination of increased chemical diversity, voluntary or mandatory restrictions on the use of key insecticides, and careful integration of chemical control with other pest–management options. In both countries, the most significant achievement has been a dramatic reduction in the number of insecticide treatments applied against whiteflies on cotton, increasing the prospect of sustained use of existing and future insecticides.

scholarly journals A model species for agricultural pest genomics: the genome of the Colorado potato beetle, Leptinotarsa decemlineata (Coleoptera: Chrysomelidae)

2017 ◽  
Author(s):  
Sean D. Schoville ◽  
Yolanda H. Chen ◽  
Martin N. Andersson ◽  
Joshua B. Benoit ◽  
Anita Bhandari ◽  
...  
Keyword(s):  
Insecticide Resistance ◽  
Colorado Potato Beetle ◽  
Leptinotarsa Decemlineata ◽  
High Sensitivity ◽  
Evolutionary Change ◽  
Rnai Pathway ◽  
Agricultural Pests ◽  
Genomic Changes ◽  
Potato Beetle ◽  
Rapid Evolutionary Change

AbstractThe Colorado potato beetle is one of the most challenging agricultural pests to manage. It has shown a spectacular ability to adapt to a variety of solanaceaeous plants and variable climates during its global invasion, and, notably, to rapidly evolve insecticide resistance. To examine evidence of rapid evolutionary change, and to understand the genetic basis of herbivory and insecticide resistance, we tested for structural and functional genomic changes relative to other arthropod species using genome sequencing, transcriptomics, and community annotation. Two factors that might facilitate rapid evolutionary change include transposable elements, which comprise at least 17% of the genome and are rapidly evolving compared to other Coleoptera, and high levels of nucleotide diversity in rapidly growing pest populations. Adaptations to plant feeding are evident in gene expansions and differential expression of digestive enzymes in gut tissues, as well as expansions of gustatory receptors for bitter tasting. Surprisingly, the suite of genes involved in insecticide resistance is similar to other beetles. Finally, duplications in the RNAi pathway might explain why Leptinotarsa decemlineata has high sensitivity to dsRNA. The L. decemlineata genome provides opportunities to investigate a broad range of phenotypes and to develop sustainable methods to control this widely successful pest.

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 Mosquitocidal carbamates with low toxicity to agricultural pests: an advantageous property for insecticide resistance management

2014 ◽  
Vol 71 (8) ◽  
pp. 1158-1164 ◽  
Author(s):  
Daniel R Swale ◽  
Paul R Carlier ◽  
Joshua A Hartsel ◽  
Ming Ma ◽  
Jeffrey R Bloomquist
Keyword(s):  
Insecticide Resistance ◽  
Resistance Management ◽  
Agricultural Pests ◽  
Insecticide Resistance Management ◽  
Low Toxicity

Present status of radio astrometry with baselines ≤ 35 km

1978 ◽  
Vol 48 ◽  
pp. 175-178 ◽  
Author(s):  
K. J. Johnston
Keyword(s):  
Present Status ◽  
Future Work

A summary of results for radio astrometry with baselines ≤ 35 km and priorities for future work are given.

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