Susceptibility of different life stages of Tribolium confusum to pyrethrin aerosol: effects of a flour food source on insecticidal efficacy

Kharel, Kabita; Arthur, Frank H.; Zhu, Kun Yan; Campbell, James F.; Subramanyam, Bhadriraju

doi:10.1007/s10340-013-0549-z

Cited by 22 publications

(4 citation statements)

References 15 publications

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“…One explanation is that the presence of long dense larval hairs reduces the direct body exposed to the non-thermal APPD and microwave energy. In addition, the presence of the food source provided when larvae are exposed to the non-thermal APPD and microwave powers may have helped to reduce larval exposure or provided a means for larvae to limit or escape exposure (Toews et al ., 2010; Kharel et al ., 2014). Trogoderma granarium adults were generally more susceptible than larvae.…”

Section: Discussionmentioning

confidence: 99%

Assessment of the potential of non-thermal atmospheric pressure plasma discharge and microwave energy againstTribolium castaneumandTrogoderma granarium

Abotaleb

Badr

Rashed

2021

Bull. Entomol. Res.

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This study was carried out to investigate the efficacy of the non-thermal atmospheric pressure plasma produced with dielectric barrier discharge (APPD) using air as a processing gas and microwave energy to control Tribolium castaneum and Trogoderma granarium adults and larvae in wheat grains. Insects’ mortality was found to be power and time-dependent. The results indicated that non-thermal APPD and the microwave have enough insecticidal effect on the target pests. From the bioassay, LT50's and LT90's levels were estimated, T. granarium larvae appeared more tolerant to non-thermal APPD and the microwave energy than adults 7 days post-exposure. The germination percentage of wheat grains increased as the time of exposure to the non-thermal APPD increased. On the contrary, the germination percentage of wheat grains decreased as the time of exposure to the microwave increased. In addition, changes in antioxidant enzyme activities, catalase (CAT), glutathione S-transferase (GST) and peroxidase, in adults and larvae were examined after 24 h post-treatment to non-thermal APPD at 15.9 W power level, which caused 50% mortality. The activity of CAT, GST and lipid peroxide in the treated larvae showed a significant increase post-exposure to the non-thermal APPD at 15.9 W power level. On the other hand, no significant change in GSH-Px activity was observed. Reductions in the level of glutathione (GSH) and protein content occurred in treated larvae in comparison with the control.

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Section: Discussionmentioning

confidence: 99%

Assessment of the potential of non-thermal atmospheric pressure plasma discharge and microwave energy againstTribolium castaneumandTrogoderma granarium

Abotaleb

Badr

Rashed

2021

Bull. Entomol. Res.

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“…The presence of food after insecticide exposure was associated with reductions in the numbers of affected individuals, consistent with previous research showing that food decreases the efficacy of contact insecticides. [37][38][39][40] Mechanisms for reduced efficacy of insecticides in the presence of food are not understood although it has been hypothesized as being due to increased metabolism and detoxification in the presence of food 64 or increased moisture and humidity associated with food, 65 drawing insecticide away from the cuticle. In any case, sanitation to remove residual food where LLIN will be deployed should enhance efficacy.…”

Section: Discussionmentioning

confidence: 99%

Effectiveness of long‐lasting insecticide netting on Tribolium castaneum is modulated by multiple exposures, biotic, and abiotic factors

Gerken

Scully

Campbell

et al. 2020

Pest Management Science

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BACKGROUND Prevention is the first line of defense in mitigating losses of post‐harvest crops. Long‐lasting insecticide treated (LLIN) could be used in food facilities to expose insects to insecticide at different areas within a facility. Prior research has shown that single short exposures reduce movement and longer exposures increase mortality for stored‐product insect pests, but we do not know how multiple short duration exposures and biotic and abiotic conditions affect insects exposed to LLIN. Here, we repeatedly exposed red flour beetles, Tribolium castaneum, to LLIN to assess the cumulative effects. We also examined the effects of beetle age and time of day during exposure, and temperature, humidity and food availability during recovery after a single exposure to LLIN. RESULTS We found that four repeated 10‐min exposures had similar knockdown effects as a single 30‐min exposure. We also found that beetles were more affected when aged 1–6 days versus 14–20 days or were exposed at mid‐ or late in the day versus earlier in the day. Higher recovery levels were observed with food and at higher relative humidity. In addition, older beetles were more active than younger beetles during exposure, which could reduce time in contact with netting and partially explain why older beetles tended to be less affected. CONCLUSION Some individuals can recover after exposure to LLIN, dependent on exposure duration and environmental factors, but our study shows that sublethal effects likely persist and future work should consider the physiology of T. castaneum before, during, and after exposure to LLIN. Published 2020. This article is a U.S. Government work and is in the public domain in the USA

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“…Food is considered an obstacle since it can prevent the contact of the insect with the treated surface, but also because it can absorb or even degrade the insecticide [95][96][97][98][99][100][101][102][103]. As a result, intensive cleaning is suggested to eliminate the possibility of the insecticidal efficacy reduction caused by food prior to the application, as well as during the storage period [99,104,105].…”

Section: Discussionmentioning

confidence: 99%

Five Surfaces Treated with d-Tetramethrin plus Acetamiprid for the Management of Tenebrio molitor and Alphitobius diaperinus: Which Is the Best?

Kavallieratos,

Nika,

Gounari

2023

Insects

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Tenebrio molitor L. (Coleoptera: Tenebrionidae) and Alphitobius diaperinus Panzer (Coleoptera: Tenebrionidae) are two common tenebrionids occurring in grain storages. In this study, we assessed the immediate and delayed mortalities caused by d-tetramethrin plus acetamiprid on five different surfaces, i.e., plastic, glass, metal, wood, and ceramic, against adults of the two species. The tests included two label doses of the insecticide (minimum and maximum) and two food scenarios (food and no food). Generally, the maximum dose was more efficient than the minimum dose, and the presence of food resulted in lower observed mortalities than when food was absent. Tenebrio molitor was more susceptible than A. diaperinus, at all dose, food, and surface scenarios. At delayed bioassays, both doses killed all T. molitor on plastic, while on wood, mortality ranged between 80.6 and 100.0%, regardless of the food scenario. Concerning A. diaperinus, delayed mortalities ranged among treated surfaces, food scenarios, and dose from 58.3 to 100.0%. The insecticide killed the most individuals when it was treated on glass, while when it was applied on wood caused the death of the least individuals. Concerning plastic, metal, and ceramic surfaces, no general trend was observed. The maximum dose of the tested insecticide provides elevated mortalities for both species when food is absent.

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Susceptibility of different life stages of Tribolium confusum to pyrethrin aerosol: effects of a flour food source on insecticidal efficacy

Cited by 22 publications

References 15 publications

Assessment of the potential of non-thermal atmospheric pressure plasma discharge and microwave energy againstTribolium castaneumandTrogoderma granarium

Assessment of the potential of non-thermal atmospheric pressure plasma discharge and microwave energy againstTribolium castaneumandTrogoderma granarium

Effectiveness of long‐lasting insecticide netting on Tribolium castaneum is modulated by multiple exposures, biotic, and abiotic factors

Five Surfaces Treated with d-Tetramethrin plus Acetamiprid for the Management of Tenebrio molitor and Alphitobius diaperinus: Which Is the Best?

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