Identifying the presence of neonicotinoidresistant peach‐potato aphid (<i>Myzus persicae</i>) in the peach‐growing regions of southern France and northern Spain

Slater, Russell; Paul, Verity Laura; Andrews, M. C.; Garbay, Michel; Camblin, Philippe

doi:10.1002/ps.2307

Cited by 71 publications

(81 citation statements)

References 16 publications

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“…Indeed, studies performed on the brown planthopper Nilaparvata lugens and the aphid M. persicae showed that β1 was part of the IMI binding sites. Mutation of arginine to threonine at position 81 in this subunit induced an increase of resistance against neonicotinoids [31], [32], [33]. Moreover, recent studies demonstrated that nAChR subunit expression level was associated to neonicotinoid sensitivity [34], [35].…”

Section: Discussionmentioning

confidence: 99%

Neonicotinoid Binding, Toxicity and Expression of Nicotinic Acetylcholine Receptor Subunits in the Aphid Acyrthosiphon pisum

et al. 2014

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Neonicotinoid insecticides act on nicotinic acetylcholine receptor and are particularly effective against sucking pests. They are widely used in crops protection to fight against aphids, which cause severe damage. In the present study we evaluated the susceptibility of the pea aphid Acyrthosiphon pisum to the commonly used neonicotinoid insecticides imidacloprid (IMI), thiamethoxam (TMX) and clothianidin (CLT). Binding studies on aphid membrane preparations revealed the existence of high and low-affinity binding sites for [3H]-IMI (Kd of 0.16±0.04 nM and 41.7±5.9 nM) and for the nicotinic antagonist [125I]-α-bungarotoxin (Kd of 0.008±0.002 nM and 1.135±0.213 nM). Competitive binding experiments demonstrated that TMX displayed a higher affinity than IMI for [125I]-α-bungarotoxin binding sites while CLT affinity was similar for both [125I]-α-bungarotoxin and [3H]-IMI binding sites. Interestingly, toxicological studies revealed that at 48 h, IMI (LC50 = 0.038 µg/ml) and TMX (LC50 = 0.034 µg/ml) were more toxic than CLT (LC50 = 0.118 µg/ml). The effect of TMX could be associated to its metabolite CLT as demonstrated by HPLC/MS analysis. In addition, we found that aphid larvae treated either with IMI, TMX or CLT showed a strong variation of nAChR subunit expression. Using semi-quantitative PCR experiments, we detected for all insecticides an increase of Apisumα10 and Apisumβ1 expressions levels, whereas Apisumβ2 expression decreased. Moreover, some other receptor subunits seemed to be differently regulated according to the insecticide used. Finally, we also demonstrated that nAChR subunit expression differed during pea aphid development. Altogether these results highlight species specificity that should be taken into account in pest management strategies.

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Section: Discussionmentioning

confidence: 99%

Neonicotinoid Binding, Toxicity and Expression of Nicotinic Acetylcholine Receptor Subunits in the Aphid Acyrthosiphon pisum

et al. 2014

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“…However, there was some cross resistance with other first-generation neonicotinoids (27). Some issues have arisen in the control of other pests; however, most reported cases of resistance have been relatively manageable or geographically localized, and most targeted insects have not shown resistance problems despite the widespread use of neonicotinoids (1,11,13,17,24,25,28,36). Although resistance problems with neonicotinoids have been manageable, we need to remain vigilant about resistance to neonicotinoids.…”

Section: Discussionmentioning

confidence: 99%

Management of Severe Curly Top in Sugar Beet with Insecticides

Strausbaugh

Wenninger

Eujayl³

2012

Plant Disease

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Curly top, caused by Curtovirus spp., is a widespread disease problem vectored by the beet leafhopper in semiarid sugar beet production areas. The insecticide seed treatment Poncho Beta has proven to be effective in controlling curly top in sugar beet but was only evaluated under light to moderate disease pressure. Thus, the insecticide seed treatments Poncho Beta, NipsIt INSIDE, and Cruiser Force were evaluated under severe curly top pressure (six viruliferous beet leafhoppers per plant) in field studies during the 2010 and 2011 growing seasons on two commercial sugar beet cultivars. In addition, the foliar insecticides Movento, Provado, and Scorpion were also evaluated. The seed treatments and Scorpion reduced curly top symptoms by 33 to 41% (P < 0.0001) and increased root yield by 55 to 95% (P < 0.0001), sucrose content by 6.5 to 7.2% (P = 0.0013 to <0.0001), and estimated recoverable sucrose by 58 to 96% (P < 0.0001) when compared with the untreated check. Movento and Provado did not improve control beyond that provided by Poncho Beta. Even under severe disease pressure 50 to 55 days after planting, neonicotinoid seed treatments can effectively reduce curly top, increase yield, and help protect against early-season insect pest pressure.Curly top in sugar beet semiarid production areas of the United States is caused by one of three Curtovirus spp. (29,35): Beet severe curly top virus (BSCTV), Beet mild curly top virus (BMCTV), and Beet curly top virus (BCTV). However, the number of Curtovirus spp. or proposed species has increased in recent years and some have been shown to occur on sugar beet in other countries (5,7,14,15,19,39). Finding more than one of the Curtovirus spp. (BCTV, BMCTV, and BSCTV) in a sugar beet plant is not uncommon (35). The virus species that cause curly top are vectored by the beet leafhopper, Circulifer tenellus Baker (Hemiptera: Cicadellidae) (3). Adult female beet leafhoppers overwinter on sagebrush steppe vegetation and weeds in desert areas and poorly managed residential areas near sugar beet fields (3,4). Overwintered females lay eggs in the spring, leading to the start of approximately three generations under Idaho conditions (3). In warmer semiarid production areas of the United States, additional beet leafhopper generations may occur. When winter host plants desiccate in the spring, the beet leafhoppers move into crop areas carrying the curly top viruses (3,4,8). Although the beet leafhopper is polyphagous and has many hosts, sugar beet is a preferred host (3,16). If the beet leafhopper migrates early in the season and a sugar beet plant is infected at an early growth stage, curly top damage is worse than if infection occurs at later growth stages (10,26,38).Sugar beet cultivars with resistance to curly top became commercially available in the mid-1930s, prior to which curly top almost eliminated the sugar beet industry in the western United States (3,4). However, resistance in sugar beet cultivars tends to be low to intermediate (31). Resistance to curly top in sugar beet is ...

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“…It should be noted that without careful management (e.g., rotating insecticides with different available modes of action, [41,42]), resistance to the above insecticides could occur for pests in UK oilseed rape, thus reducing the efficacy. Neonicotinoid resistance has already been detected in the peach—potato aphid in Southern Europe [43]. …”

Section: Discussionmentioning

confidence: 99%

Arthropod Pest Control for UK Oilseed Rape – Comparing Insecticide Efficacies, Side Effects and Alternatives

et al. 2017

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Oilseed rape (Brassica napus) is an important combinable break crop in the UK, which is largely protected from arthropod pests by insecticidal chemicals. Despite ongoing debate regarding the use of neonicotinoids, the dominant seed treatment ingredients used for this crop, there is little publicly available data comparing the efficacy of insecticides in controlling key arthropod pests or comparing the impacts on non-target species and the wider environment. To provide an insight into these matters, a UK-wide expert survey targeting agronomists and entomologists was conducted from March to June 2015. Based on the opinions of 90 respondents, an average of 20% yield loss caused by the key arthropod pests was expected to have occurred in the absence of insecticide treatments. Relatively older chemical groups were perceived to have lower efficacy for target pests than newer ones, partly due to the development of insecticide resistance. Without neonicotinoid seed treatments, a lack of good control for cabbage stem flea beetle was perceived. Wide spectrum foliar insecticide sprays were perceived to have significantly greater negative impacts than seed treatments on users’ health, natural enemies, pollinators, soil and water, and many foliar active ingredients have had potential risks for non-target arthropod species in UK oilseed rape fields for the past 25 years. Overall, 72% of respondents opposed the neonicotinoid restriction, while 10% supported it. Opposition and support of the restriction were largely based on concerns for pollinators and the wider environment, highlighting the uncertainty over the side effects of neonicotinoid use. More people from the government and research institutes leaned towards neutrality over the issue, compared to those directly involved in growing the crop. Neonicotinoid restriction was expected to result in greater effort and expenditure on pest control and lower production (0–1 t/ha less). Alternatives for future oilseed rape protection were then discussed.

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Identifying the presence of neonicotinoidresistant peach‐potato aphid (Myzus persicae) in the peach‐growing regions of southern France and northern Spain

Cited by 71 publications

References 16 publications

Neonicotinoid Binding, Toxicity and Expression of Nicotinic Acetylcholine Receptor Subunits in the Aphid Acyrthosiphon pisum

Neonicotinoid Binding, Toxicity and Expression of Nicotinic Acetylcholine Receptor Subunits in the Aphid Acyrthosiphon pisum

Management of Severe Curly Top in Sugar Beet with Insecticides

Arthropod Pest Control for UK Oilseed Rape – Comparing Insecticide Efficacies, Side Effects and Alternatives

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