The impact of temperature on insecticide sensitivity depends on transgenerational effects

Bagni, Thibaut; Siaussat, David; Maria, Annick; Couzi, Philippe; Maı̈bèche, Martine; Massot, M.

doi:10.1016/j.scitotenv.2022.158140

Cited by 5 publications

(3 citation statements)

References 35 publications

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“…2 Elevated humidity and temperature boost pest reproductive capacity, 38 and the combined effects of insecticides and temperature alter species responses to insecticides in the context of climate warming. 39 Studies indicate the impact of temperature on insecticide sensitivity hinges on transgenerational and parental effects, influencing the interaction between temperature and pesticides. 39 While this study provides valuable insights into the attractiveness of microcapsules under simulated granary conditions, it is essential to acknowledge certain limitations.…”

Section: Discussionmentioning

confidence: 99%

“…39 Studies indicate the impact of temperature on insecticide sensitivity hinges on transgenerational and parental effects, influencing the interaction between temperature and pesticides. 39 While this study provides valuable insights into the attractiveness of microcapsules under simulated granary conditions, it is essential to acknowledge certain limitations. The simulated granaries may differ significantly from actual granary conditions, and also, we focused specifically on S. cerealella and wheat grains.…”

Section: Discussionmentioning

confidence: 99%

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Microcapsules of mesoporous silica and cyclodextrin modified loaded with nonanal and decanal for effective control of Sitotroga cerealella in grain storage environments

Shah,

Zhang,

et al. 2024

Pest Management Science

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BACKGROUNDThe Angoumois grain moth, Sitotroga cerealella, is a destructive pest of maize, wheat, and rice, causing economic losses and threatening food security. This study aimed to develop and characterize microcapsules of mesoporous silica nanospheres (MSN) and cyclodextrin‐modified mesoporous silica nanospheres (CDMSN) containing two aldehydes, nonanal and decanal, found in plant essential oils, to assess their attractiveness to S. cerealella populations.RESULTSMicrocapsules with 2:1 ratio of nonanal and decanal exhibited an average encapsulation efficiency of 39.82% for MSN loaded with nonanal and decanal (MSN‐ND) and 46.10% for CDMSN loaded with nonanal and decanal (CDMSN‐ND). They have an elliptical shape with particle sizes of 115 nm for MSN and 175 nm for CDMSN. Gas chromatography–mass spectrometry analysis revealed in vitro release of nonanal in MSN at 96.24% and decanal at 96.42% by the 36th day. CDMSN showed releases of 93.83% for nonanal and 93.74% for decanal by the 50th day. CDMSN‐ND attracted adult S. cerealella for 43 days, while MSN‐ND remained effective for 29 days. In mass trapping assays in simulated grain warehouse, both MSN‐ND and CDMSN‐ND trapped over 50% of the adult population within 7 days, significantly reducing grain infestation rates below 10% by inhibiting F1 adult emergence. At temperatures ranging from 20 °C to 35 °C, both microcapsules exhibited significant and effective attraction rates for S. cerealella. Stored wheat seeds treated with CDMSN and CDMSN‐ND over 1 year showed no significant differences in key germination parameters.CONCLUSIONMicroencapsulated nonanal and decanal offer a promising, sustainable approach for controlling S. cerealella infestation in stored grains, contributing to global food security. © 2024 Society of Chemical Industry.

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Microcapsules of mesoporous silica and cyclodextrin modified loaded with nonanal and decanal for effective control of Sitotroga cerealella in grain storage environments

Shah,

Zhang,

et al. 2024

Pest Management Science

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“…Earthworms are considered a crucial soil indicator species due to their ability to significantly alter the chemical properties of the soil and improve overall soil health ( Tondoh et al., 2007 ; Yuvaraj et al., 2019 ; Yuvaraj et al., 2020 ; Yuvaraj et al., 2021a ; Yuvaraj et al., 2021b ). Due to the widespread use of a variety of insecticides in agricultural soil, earthworm populations have been affected, which has led to a deterioration in the quality of the soil and a subsequent reduction in crop yield ( Bagni et al., 2022 ).…”

Section: Introductionmentioning

confidence: 99%

Entomopathogenic fungi based microbial insecticides and their physiological and biochemical effects on Spodoptera frugiperda (J.E. Smith)

Vivekanandhan,

Swathy,

Lucy

et al. 2023

Front. Cell. Infect. Microbiol.

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Background‘The fall armyworm, Spodoptera frugiperda’, represents a significant threat to maize production, a major staple crop in Asian countries.MethodsIn pursuit of more effective control of this insect pest, our study assessed the physiological and biochemical effects of the entomopathogenic fungus Metarhizium anisopliae against the larvae of S. frugiperda.ResultsResults revealed that, following nine days of treatment, a high concentration of conidia (1.5x107 conidia/mL-1) was toxic to all stages of larvae (second to fifth instar), resulting in 97% mortality of the second instar, 89% mortality of the third instar, 77% mortality of the fourth instar, and 72% mortality of fifth instar. All larval instars were found to have dose-dependent mortality effects. Treated S. frugiperda larvae further displayed significant physiological, morphological, and behavioral changes. Here, treated larvae displayed significantly lower levels of acetylcholinesterase, α-carboxylesterase, and β-carboxylesterase enzyme activity when compared to control groups. Treated larvae underwent an outward morphological change as the result of a decrease in the exterior cuticle of the anal papillae and a demelanization of the interior cuticle. Treated larvae also exhibited abnormal feeding behaviors as a consequence of the negative impact of conidia treatment on the neuromuscular system. Investigation into the effect of M. anisopliae on the non-target organism, the earthworm Eudrilus eugeniae, revealed that M. anisopliae conidia did not produce significant pathogenicity following three days of treatment. Furthermore, histological analysis revealed no significant effect of the entomopathogenic fungi on the gut tissue of the non-target organism.ConclusionThis study highlights the potential of M. anisopliae in the control of S. frugiperda.

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Daily temperature fluctuation interacts with the mean temperature to increase the toxicity of a pyrethroid insecticide in a moth

Bagni,

Bouanou,

Siaussat

et al. 2024

Chemosphere

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The impact of temperature on insecticide sensitivity depends on transgenerational effects

Cited by 5 publications

References 35 publications

Microcapsules of mesoporous silica and cyclodextrin modified loaded with nonanal and decanal for effective control of Sitotroga cerealella in grain storage environments

Microcapsules of mesoporous silica and cyclodextrin modified loaded with nonanal and decanal for effective control of Sitotroga cerealella in grain storage environments

Entomopathogenic fungi based microbial insecticides and their physiological and biochemical effects on Spodoptera frugiperda (J.E. Smith)

Daily temperature fluctuation interacts with the mean temperature to increase the toxicity of a pyrethroid insecticide in a moth

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