Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros

Santos, Milaine Fernandes dos; Santos, Renato Lemos dos; Tomé, Hudson V. V.; Barbosa, Wagner Faria; Martins, Gustavo Ferreira; Guedes, Raul Narciso C.; Oliveira, Eugênio E.

doi:10.1007/s10340-015-0666-y

Cited by 38 publications

(36 citation statements)

References 45 publications

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“…Preliminary bioassays indicated that this concentration was the highest one with no observable effects on newly emerged adult survival of E . heros [ 44 ]. After the 48 h exposure time, females and males were kept in separate plastic containers for 10 days to reach the sexual maturity.…”

Section: Methodsmentioning

confidence: 99%

“…In Brazil, for instance, neonicotinoids have become the most common insecticides used to control several sap-sucking insects, such as the Neotropical brown stink bug Euschistus heros (F.) (Hemiptera: Heteroptera: Pentatomidae) [ 39 , 40 ], which is the most abundant and prevalent insect pest in Neotropical soybean fields [ 41 – 43 ]. In a recent investigation, Santos et al [ 44 ] demonstrated that females of E . heros sublethally exposed to imidacloprid had enhanced reproductive output, which suggests that there is a potential link between sublethal exposure to imidacloprid and recent outbreaks of E .…”

Section: Introductionmentioning

confidence: 99%

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Sexual Success after Stress? Imidacloprid-Induced Hormesis in Males of the Neotropical Stink Bug Euschistus heros

et al. 2016

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Environmental stress in newly-emerged adult insects can have dramatic consequences on their life traits (e.g., dispersion, survival and reproduction) as adults. For instance, insects sublethally exposed to environmental stressors (e.g., insecticides) can gain fitness benefits as a result of hormesis (i.e., benefits of low doses of compounds that would be toxic at higher doses). Here, we experimentally tested whether sublethal exposure to the insecticide imidacloprid would hormetically affect the sexual fitness of newly-emerged adults of the Neotropical brown stink bug Euschistus heros (Hemiptera: Heteroptera: Pentatomidae), which is the most abundant and prevalent insect pest in Neotropical soybean fields. We evaluated the sexual fitness of four couple combinations: unexposed couples, exposed females, exposed males, and exposed couples. Sublethal exposure to dry residues (i.e., contact) of imidacloprid (at 1% of recommended field rate) did not affect insect survival, but led to higher mating frequencies when at least one member of the couple was exposed. However, the average mating duration was shortened when only females were exposed to imidacloprid. Moreover, exposed males showed higher locomotory (walking) activity, lower respiration rates and induced higher fecundity rates when mated to unexposed females. Although the reproductive tracts of exposed males did not differ morphometrically from unexposed males, their accessory glands exhibited positive reactions for acidic and basic contents. Our findings suggest that males of the Neotropical brown stink bug hormetically increase their sexual fitness when cued by impending insecticidal stress in early adulthood.

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Section: Methodsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Sexual Success after Stress? Imidacloprid-Induced Hormesis in Males of the Neotropical Stink Bug Euschistus heros

et al. 2016

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“…In Brazil, neonicotinoids and pyrethroids have become the most common insecticides used to control E. heros . The restricted number of chemicals registered for control of these insects and the indiscriminate use of this control practice will certainly lead to substantial biodiversity losses in agricultural landscapes, selection for insecticide‐resistant populations, resurgence and/or outbreaks of insect pests, and impairment of non‐target organisms, including humans …”

Section: Introductionmentioning

confidence: 99%

Liposome encapsulation and EDTA formulation of dsRNA targeting essential genes increase oral RNAi‐caused mortality in the Neotropical stink bug Euschistus heros

Castellanos

Smagghe

Sharma

et al. 2018

Pest Management Science

104

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“…We also showed that the nymphal survival rate in F0 generation and fecundity in F1 generation of A. lucorum were decreased at LC 30 . Many insect species also have lower survival rates in their immature stages, including A. lucorum 41 , R. padi 43 , B. tabaci 15,44 , Euschistus heros 16 , and A. gossypii 45 . Additionally, the reduction in fecundity were also observed in A. lucorum with LD 40 of cycloxaprid 18 , A. gossypii exposed to LC 10 and LC 40 of cycloxaprid 34 , A. glycine with 0.20 mg L −1 of imidacloprid 42 , and N. lugens treated with imidacloprid and dinotefuran 46 .…”

Section: Discussionmentioning

confidence: 99%

Sublethal and transgenerational effects of dinotefuran on biological parameters and behavioural traits of the mirid bug Apolygus lucorum

Dong

et al. 2020

Sci Rep

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The mirid bug, Apolygus lucorum, has become a major pest of many crops and fruit trees since the widespread adoption of Bt cotton in northern China. Neonicotinoid insecticides, such as dinotefuran, applied to control this pest may show sublethal effects, but evidence for such effects is lacking. Here, we investigated the sublethal and transgenerational effects of dinotefuran on biological parameters and feeding behavioural traits of A. lucorum using the age-stage, two-sex life table and electrical penetration graphs (EPGs), respectively. The LC 10 and Lc 30 of dinotefuran against 3 rd -instar nymphs of A. lucorum were 14.72 and 62.95 mg L −1 , respectively. These two concentrations significantly extended the development duration from 3 rd -instar nymph to adult in parent generation (F0). LC 30 also increased the oviposition period and male adult longevity and reduced nymphal survival rate in the F0. For offspring generation (F1), the egg duration, preadult duration, and total preoviposition period were significantly lower at LC 10 than in the control, and the egg duration, duration of 4 th -instar nymphs, preadult duration, oviposition period, and fecundity were also decreased at LC 30 . However, the four demographic parameters of F1 generation, namely, net reproductive rate (R 0 ), intrinsic rate of increase (r), finite rate of increase (λ), and mean generation time (T), were not affected by dinotefuran. The significant differences in the number of probes and duration of each of four feeding waveforms failed to be detected when A. lucorum nymphs treated by dinotefuran feed on Bt cotton plants without insecticide exposure. Overall, the dinotefuran concentrations tested here have sublethal, but no transgenerational impacts on A. lucorum.Mirid bugs, including Apolygus lucorum, have become the key pests of cotton and fruit trees owing to the major reduction in broad-spectrum insecticide use associated with the wide-scale adoption of Bt cotton in China since 1997 1,2 . The nymphs and adults of these bugs mainly feed on the young tissues of crops, including the leaves, bolls, fruits, terminal meristems, and other tissues, resulting in the stunting of plants and dropping of bolls and fruits, and in turn causing serious yield loss 3 . Broad-spectrum insecticides, such as organophosphates and pyrethroids, have been extensively applied to reduce the infestation by these insects 4-6 . However, many environmental risks are related to the use of these conventional insecticides, e.g., insect resistance 7,8 , with negative effects to natural enemies 9,10 and on human health. Thus, it is crucial that insecticides with highly effective to pests and low-toxicity to mammals should be adopted to manage mirid bugs to reduce the environmental risks.Neonicotinoid insecticides are among the most widely used pesticides globally, with the advantages of favourable toxicological properties, flexible use, and systemic activity 11,12 . They selectively act as agonists of insect nicotinic acetylcholine receptors (nAChRs), preventing signal tr...

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Imidacloprid-mediated effects on survival and fertility of the Neotropical brown stink bug Euschistus heros

Cited by 38 publications

References 45 publications

Sexual Success after Stress? Imidacloprid-Induced Hormesis in Males of the Neotropical Stink Bug Euschistus heros

Sexual Success after Stress? Imidacloprid-Induced Hormesis in Males of the Neotropical Stink Bug Euschistus heros

Liposome encapsulation and EDTA formulation of dsRNA targeting essential genes increase oral RNAi‐caused mortality in the Neotropical stink bug Euschistus heros

Sublethal and transgenerational effects of dinotefuran on biological parameters and behavioural traits of the mirid bug Apolygus lucorum

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