Individual and combined effects of insecticides, inert dusts and high temperatures on Callosobruchus maculatus (coleoptera: Chrysomelidae)

Karimzadeh, Roghaiyeh; Javanshir, Mina; Hejazi, Mohammad Saeid

doi:10.1016/j.jspr.2020.101693

Cited by 9 publications

(4 citation statements)

References 27 publications

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“…Thermal stress has been shown to disrupt symbiosis in several insects in the orders Hymenoptera, Hemiptera, Coleoptera, and Psocoptera, leading to deregulation of metabolism and reduced fitness [19,[21][22][23][24][25]. Based on these observations, we speculate that symbionts could contribute to the temperature-dependent response to insecticides of their insect hosts, which may account for increased insecticide susceptibility at higher temperatures as have been shown in several insects [12,[26][27][28].…”

Section: Introductionsupporting

confidence: 56%

Decline in symbiont-dependent host detoxification metabolism contributes to increased insecticide susceptibility of insects under high temperature

et al. 2021

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The interactions between insects and their bacterial symbionts are shaped by a variety of abiotic factors, including temperature. As global temperatures continue to break high records, a great deal of uncertainty surrounds how agriculturally important insect pests and their symbionts may be affected by elevated temperatures, and its implications for future pest management. In this study, we examine the role of bacterial symbionts in the brown planthopper Nilaparvata lugens response to insecticide (imidacloprid) under different temperature scenarios. Our results reveal that the bacterial symbionts orchestrate host detoxification metabolism via the CncC pathway to promote host insecticide resistance, whereby the symbiont-inducible CncC pathway acts as a signaling conduit between exogenous abiotic stimuli and host metabolism. However, this insect-bacterial partnership function is vulnerable to high temperature, which causes a significant decline in host-bacterial content. In particular, we have identified the temperature-sensitive Wolbachia as a candidate player in N. lugens detoxification metabolism. Wolbachia-dependent insecticide resistance was confirmed through a series of insecticide assays and experiments comparing Wolbachia-free and Wolbachia-infected N. lugens and also Drosophila melanogaster. Together, our research reveals elevated temperatures negatively impact insect-bacterial symbiosis, triggering adverse consequences on host response to insecticide (imidacloprid) and potentially other xenobiotics.

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Section: Introductionsupporting

confidence: 56%

Decline in symbiont-dependent host detoxification metabolism contributes to increased insecticide susceptibility of insects under high temperature

et al. 2021

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“…This inhibits the sexually mature insects to find the mate and copulate as well laying eggs on seeds. Fine ash or powders, can be effectively asphyxiating the adults, and also lethal to egg or larval stages inside the seed ( Bamaiyi et al., 2007 ; Tabu et al., 2012 ) Sometimes, it also inhibit 100 % adult emergence ( Karimzadeh et al., 2020 ). Paddy husk ash, could be also used against Callosobruchus maculatus ( Ashamo et al., 2021 ; Atewoja et al., 2021 ).…”

Section: Resultsmentioning

confidence: 99%

Management of stored grain pest with special reference to Callosobruchus maculatus, a major pest of cowpea: A review

Kalpna

Hajam

Kumar

2022

Heliyon

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Bruchids are most pernicious pest of stored grain pulses, especially in the tropical and subtropical areas. They penetrate into the fully grown matured pods, grains in fields and also during post-harvest storage. Among bruchids, Callosobruchus maculatus is the prominent pest having ubiquitous distribution. Chemical/synthetic insecticides provides adequate control against the C. maculatus on the pulses. However, the use of synthetic insecticides induces adverse health outcomes in agricultural workers and many causes various diseases such as cancers, genomic damage, oxidative stress, neurological disorders and respiratory, metabolic and thyroid effects. Therefore, alternative effective, safe and sustainable pest control, integration of different compatible methods should be taken into considerations. One of the possible managements might be use of traditional as well modern pest management practices. Traditional techniques include sealed containers, inert materials, harvesting time, alternate host, intercropping, storing un-threshed pulses, cleanliness, vegetable oil etc. Modern techniques such as temperature, freezing and heating, radiation treatments, resistance varieties, natural control, botanical extracts, chemical and microbial, transgenic approach, cold plasma treatments etc. thus integrated pest management might be alternative approach to combat the effect of pest. Therefore, present review aims to considers various measures for the handling of bruchids with special reference to Callosobruchus maculatus and integrated molecular inventions to decrease bruchids populations and enhance pulse productivity in pulses.

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“…If the 95% CL included one, then the difference between LC 50 and LTe 50 values were considered insignificant 34 . Chi‐square ( χ 2 ) values were calculated and compared with χ 2 distribution table to determine synergistic or antagonistic interactions 35 …”

Section: Methodsmentioning

confidence: 99%

Individual and combined effects of contact insecticides and high temperatures on Mediterranean flour moth,Ephestia kuehniellaZeller (Lepidoptera: Pyralidae)

et al. 2021

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BACKGROUND Mediterranean flour moth or mill moth Ephestia kuehniella Zeller (Lepidoptera: Pyralidae) is a common pest of cereals and flour throughout the world. In this study, eggs, third instar larvae, pupae and adults of E. kuehniella were exposed to five elevated temperatures at a range of 45 to 65 °C for 5, 8, 10, 14, 18, 23 and 30 min. The effect of cypermethrin and dichlorvos was assessed on third instar larvae. The larvae were exposed to the insecticides on glass and concrete arenas and their mortality was recorded 24 h after treatment. To determine combination effects, the third instar larvae were transferred into the Petri dishes treated with LC25 (lethal concentration that kills 25%) of each insecticide and exposed to high temperatures for the period of time equal to LTi25 values (time needed for killing 25% of tested insects). RESULTS Exposing the eggs, third instar larvae and adults of E. kuehniella to 55 °C for 30, 18 and 30 min respectively, resulted in 100% mortality. In the pupa, exposure to 65 °C caused 100% mortality after 23 min. Based on the LTe50 values (temperature needed to cause 50% mortality in the tested population), pupa was the most tolerant life stage to the temperatures tested. The LC50 values of cypermethrin and dichlorvos were 423.1 and 2608.5 mg active ingredient (a.i.) L−l on glass, and 2525.0 and 13502.8 mg a.i. L−l on concrete, respectively. The effect of cypermethrin was synergized by high temperatures. CONCLUSION High temperatures, cypermethrin and dichlorvos were effective against E. kuehniella. Exposure to combination of lower doses of cypermethrin and high temperatures at short time intervals may have potential in managing this pest. © 2021 Society of Chemical Industry.

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Individual and combined effects of insecticides, inert dusts and high temperatures on Callosobruchus maculatus (coleoptera: Chrysomelidae)

Cited by 9 publications

References 27 publications

Decline in symbiont-dependent host detoxification metabolism contributes to increased insecticide susceptibility of insects under high temperature

Decline in symbiont-dependent host detoxification metabolism contributes to increased insecticide susceptibility of insects under high temperature

Management of stored grain pest with special reference to Callosobruchus maculatus, a major pest of cowpea: A review

Individual and combined effects of contact insecticides and high temperatures on Mediterranean flour moth,Ephestia kuehniellaZeller (Lepidoptera: Pyralidae)

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