Evaluation of Cytochrome P&lt;SUB&gt;450&lt;/SUB&gt; Activity in Field Populations of &lt;I&gt;Cydia pomonella&lt;/I&gt; (Lepidoptera: Tortricidae) Resistant to Azinphosmethyl, Acetamiprid, and Thiacloprid

Cichón, Liliana; Soleño, Jimena; Anguiano, Olga L.; Garrido, Silvina Alejandra; Montagna, Cristina Mónica

doi:10.1603/ec12349

Cited by 20 publications

(14 citation statements)

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“…The Ncyano-imino neonicotinoids thiacloprid and acetamiprid, are relatively effective for codling moth control and have been widely adopted since their introduction. Resistance to both compounds has been reported in C. pomonella populations from Europe [92,93], the U.S. [94] and Argentina [95], with low level resistance to thiacloprid also reported in populations from Canada [96]. Surprisingly, resistance to thiacloprid in Europe has been observed in countries/regions prior to their use by growers and this is associated with cross-resistance with older compounds.…”

Section: Other Pestsmentioning

confidence: 99%

The global status of insect resistance to neonicotinoid insecticides

Bass

Denholm

Williamson

et al. 2015

Pesticide Biochemistry and Physiology

814

524

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The first neonicotinoid insecticide, imidacloprid, was launched in 1991. Today this class of insecticides comprises at least seven major compounds with a market share of more than 25% of total global insecticide sales. Neonicotinoid insecticides are highly selective agonists of insect nicotinic acetylcholine receptors and provide farmers with invaluable, highly effective tools against some of the world's most destructive crop pests. These include sucking pests such as aphids, whiteflies, and planthoppers, and also some coleopteran, dipteran and lepidopteran species. Although many insect species are still successfully controlled by neonicotinoids, their popularity has imposed a mounting selection pressure for resistance, and in several species resistance has now reached levels that compromise the efficacy of these insecticides. Research to understand the molecular basis of neonicotinoid resistance has revealed both target-site and metabolic mechanisms conferring resistance. For target-site resistance, field-evolved mutations have only been characterized in two aphid species. Metabolic resistance appears much more common, with the enhanced expression of one or more cytochrome P450s frequently reported in resistant strains. Despite the current scale of resistance, neonicotinoids remain a major component of many pest control programmes, and resistance management strategies, based on mode of action rotation, are of crucial importance in preventing resistance becoming more widespread. In this review we summarize the current status of neonicotinoid resistance, the biochemical and molecular mechanisms involved, and the implications for resistance management.

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Section: Other Pestsmentioning

confidence: 99%

The global status of insect resistance to neonicotinoid insecticides

Bass

Denholm

Williamson

et al. 2015

Pesticide Biochemistry and Physiology

814

524

View full text Add to dashboard Cite

show abstract

“…). Previous results on neonates from this FP showed increased mean ECOD activity, although not statistically significant (Cichón et al ., ). However, both FPs of diapausing larvae and neonates from the region have shown more than 4 fold higher activity than the one from LSS.…”

Section: Discussionmentioning

confidence: 97%

“…Previous research on neonates from this FP showed significant lower mortality to azinphosmethyl, acetamiprid and thiacloprid compared to the LSS. At the diagnostic concentrations (LC 99 ) of azinphosmethyl (2 mg/L), acetamiprid (0.7 mg/L) and thiacloprid (1 mg/L), the percentage of FP mortalities was 16.9, 51.1, and 14.8; respectively (Cichón et al ., ). Decreased toxicity to azinphosmethyl was also found in diapausing larvae of C. pomonella across the Río Negro and Neuquén Valley compared to the LSS (Soleño et al ., , ).…”

Section: Discussionmentioning

confidence: 99%

“…Even though large-scale farmers, who are generally fruit exporters, implement a sustainable use of pesticides, small-scale farmers do not always follow this strategy. Field populations (FPs) of codling moth from the area have shown decreased sensitivity to azinphosmethyl, acetamiprid, and thiacloprid (Soleño et al, 2008(Soleño et al, , 2012Cichón et al, 2013). Taking into account the current use of chlorpyrifos in the C. pomonella control, the first objective of this study was to evaluate whether the decreased sensitivity to azinphosmethyl might be extended to chlorpyrifos in the studied FP.…”

mentioning

confidence: 99%

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Effects of chlorpyrifos on enzymatic systems of Cydia pomonella (Lepidoptera: Tortricidae) adults

et al. 2016

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The control program of codling moth (Cydia pomonella L.) in the Río Negro and Neuquén Valley is intended to neonate larvae. However, adults may be subjected to sublethal pesticide concentrations generating stress which might enhance both mutation rates and activity of the detoxification system. This study assessed the exposure effects of chlorpyrifos on target enzyme and, both detoxifying and antioxidant systems of surviving adults from both a laboratory susceptible strain (LSS) and a field population (FP). The results showed that the FP was as susceptible to chlorpyrifos as the LSS and, both exhibited a similar chlorpyrifos-inhibitory concentration 50 (IC ) of acetylcholinesterase (AChE). The FP displayed higher carboxylesterase (CarE) and 7-ethoxycoumarine O-deethylase (ECOD) activities than LSS. Both LSS and FP showed an increase on CarE activity after the exposure to low-chlorpyrifos concentrations, followed by enzyme inhibition at higher concentrations. There were no significant differences neither in the activities of glutathione S-transferases (GST), catalase (CAT) and superoxide dismutase (SOD) nor in the reduced glutathione (GSH) content between LSS and FP. Moreover, these enzymes were unaffected by chlorpyrifos. In conclusion, control adults from the FP exhibited higher CarE and ECOD activities than control adults from the LSS. AChE and CarE activities were the most affected by chlorpyrifos. Control strategies used for C. pomonella, such as rotations of insecticides with different modes of action, will probably delay the evolution of insecticide resistance in FPs from the study area.

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“…affects mainly apple production [1]. As a result of long-term pesticide use, the codling moth has developed resistance to different insecticide modes of action and chemistries, such as neurotoxic insecticides and insect growth regulators [2][3][4][5][6][7][8][9][10][11][12][13][14][15][16][17][18], and even to C.…”

Section: Accepted Manuscriptmentioning

confidence: 99%