Imidacloprid-mediated alterations on the salivary glands of the Neotropical brown stink bug, Euschistus heros

Castellanos, Nathaly Lara; Ferreira‐Filho, Noelio A.; Rodrigues, Hígor S.; Martínez, Luis Carlos; Serrão, José Éduardo; Oliveira, Eugênio E.

doi:10.1007/s10646-021-02388-4

Cited by 5 publications

(4 citation statements)

References 75 publications

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“…This may indicate that ingestion can facilitate the imidacloprid molecules to reach their primary targets when compared to tarsal contact exposure, especially since previous contact exposure to PBO would inhibit the detoxifying system of the insect. However, this may reinforce the relevance of imidacloprid actions to secondary targets involved in digestion (Castellanos et al, 2021;Catae et al, 2018;Martínez et al, 2019;Perez Campos et al, 2021). ImiPBOSel individuals survived significantly longer than their susceptible counterparts (ImiSusc) in feed-treated bioassays, which provides further evidence to verify that tarsal contact selection is sufficient to select imidacloprid resistant individuals, as previously described (Castellanos et al, 2019;Snodgrass et al, 2005;Sosa-G omez et al, 2009;Takeuchi & Endo, 2012).…”

Section: Discussionsupporting

confidence: 78%

“…Recently emerged adult insects (less than 2 days old) were starved for 24 h before exposure to imidacloprid at 4.2 μg a.i./cm 2 (equivalent to the field label rate) or 12.6 μg a.i./cm 2 (equivalent to threefold the field label rate). Contact exposure to imidacloprid involved tarsal interactions with dried residues on the inner sides of glass vials and food previously treated with imidacloprid solutions, as previously described by Castellanos et al (2021). Briefly, we immersed 5 cm long pieces of green bean pods in imidacloprid-containing solutions for 3 s and left them to air dry.…”

Section: Survival Bioassaysmentioning

confidence: 99%

“…However, an increasing number of reports of imidacloprid resistance have been demonstrated in Brazilian populations of E. heros (Somavilla, da Gubiani, et al, 2020; Somavilla, Reis, et al, 2020; Steinhaus et al, 2022; Tibola et al, 2021; Tuelher et al, 2018). Imidacloprid exerts its toxicity primarily by causing irreversible disruption of the functions of nicotinic acetylcholine receptor (nAChR) subtypes expressed in the insect nervous system (Jeschke & Nauen, 2008; Oliveira et al, 2010, 2011; Salgado, 2016; Salgado & Saar, 2004), although its actions at secondary targets also play pivotal roles in its efficacy (Castellanos et al, 2021; Perez Campos et al, 2021; Stamm et al, 2011; Yuan et al, 2021).…”

Section: Introductionmentioning

confidence: 99%

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Sex‐dependent body mass and respiratory responses on Euschistus heros individuals resistant to imidacloprid

Azevedo

Cunha

Mantilla‐Afanador

et al. 2022

Agri and Forest Entomology

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1. In insect-resistant populations, adaptive fitness is intimately related to the physiological responses of males and females to different stressors.2. By using laboratory-selected imidacloprid-resistant individuals of the Neotropical brown stink bug Euschistus heros, one of the most prevalent pests in soybean fields in the Neotropical region, we evaluated whether resistance to imidacloprid (synergized by piperonyl butoxide-PBO) would differentially affect the longevity, body mass and respiratory responses of E. heros males and females.3. We used an imidacloprid-susceptible E. heros strain (ImiSusc), whose individuals were reared under controlled and imidacloprid-free conditions for over a decade, to select the PBO-synergized imidacloprid-resistant strain (ImiPBOSel). 4. After eight generations using PBO-synergized imidacloprid, our results revealed that resistant individuals exposed only to dry residues of imidacloprid (tarsal contact) could survive at concentrations as high as 168 μg a.i./cm 2 , which is equivalent to 40-fold the label recommendation for field applications. Furthermore, ImiPBOSel males and females exhibited higher longevity, higher body mass and elevated respiratory activity than ImiSusc individuals. 5. Altogether, the findings described here showed that imidacloprid resistance can select E. heros individuals with better metabolic capacities, which can complicate the management of this pest under field conditions.

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Section: Discussionsupporting

confidence: 78%

Section: Survival Bioassaysmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sex‐dependent body mass and respiratory responses on Euschistus heros individuals resistant to imidacloprid

Azevedo

Cunha

Mantilla‐Afanador

et al. 2022

Agri and Forest Entomology

Self Cite

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“…Previous studies showed that a variety of pesticides can induce apoptosis in the salivary glands, midguts, ovaries and other tissues of the bees [37][38][39]. After exposure to imidacloprid, apoptosis was stimulated in the honey bees [40,41] and bugs [42,43]. Apoptosis is closely related to the oogenesis of insects.…”

Section: Introductionmentioning

confidence: 99%

Sublethal Effects of Imidacloprid on Fecundity, Apoptosis and Virus Transmission in the Small Brown Planthopper Laodelphax striatellus

Zhang

et al. 2021

Insects

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Laodelphax striatellus damages plants directly through sucking plant sap and indirectly as a vector of rice stripe virus (RSV), resulting in serious losses of rice yield. It is one of the most destructive insects of rice in East Asia. Insecticides are primarily used for pest management, but the sublethal concentrations of insecticides may benefit several insects. The present research attempted to explore the effects of sublethal concentrations of imidacloprid on the fecundity, apoptosis and RSV transmission in the viruliferous SBPH. The results showed that the fecundity of SBPH was significantly increased after treatment with the LC10 dose of imidacloprid, while the LC30 dose of imidacloprid reduced the fecundity compared with the control. To further investigate the underlying mechanism of increased fecundity after exposure to the LC10 dose of imidacloprid, we examined the expression levels of vitellogenin (Vg), Vg receptor (VgR) and caspases in the ovaries of SBPH, and observed the apoptosis by terminal deoxynucleotidyl transferase (TDT)-mediated dUTP-digoxigenin nick end labeling (TUNEL). qRT-PCR results indicated that the expression levels of Vg, VgR and four caspase genes were all significantly increased by the LC10 dose of imidacloprid, and TUNEL assays suggested that the frequency of apoptosis was significantly higher in the SBPH treated by the LC10 dose of imidacloprid, suggesting a potential correlation between the increased fecundity and the apoptosis of SBPH ovarioles. Additionally, the expression levels of RNA3 and capsid protein (CP) were both increased significantly by the LC10 dose of imidacloprid, whereas were decreased by the LC30 dose of imidacloprid compared to the control. Therefore, this study clarifies the mechanisms of sublethal effects of imidacloprid on viruliferous SBPH and could be used to optimize pest control strategies.

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Phytotoxic evaluation of neonicotinoid imidacloprid and cadmium alone and in combination on tomato (Solanum lycopersicum L.)

et al. 2021

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Imidacloprid-mediated alterations on the salivary glands of the Neotropical brown stink bug, Euschistus heros

Cited by 5 publications

References 75 publications

Sex‐dependent body mass and respiratory responses on Euschistus heros individuals resistant to imidacloprid

Sex‐dependent body mass and respiratory responses on Euschistus heros individuals resistant to imidacloprid

Sublethal Effects of Imidacloprid on Fecundity, Apoptosis and Virus Transmission in the Small Brown Planthopper Laodelphax striatellus

Phytotoxic evaluation of neonicotinoid imidacloprid and cadmium alone and in combination on tomato (Solanum lycopersicum L.)

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