Lethal and sublethal effects of synthetic and bioinsecticides toward the invasive ambrosia beetle Xylosandrus compactus

Pest Management Science, Journal Year: 2023, Volume and Issue: 79(5), P. 1840 - 1850

Published: Jan. 19, 2023

Exotic ambrosia beetles are emerging widespread pests of several wild and managed trees shrubs. Xylosandrus compactus (Eichhoff) is one the most invasive species causing damage to a broad range host plants. Little information available on its control, including impact insecticides. Bioassays were conducted evaluate potential four bioinsecticides seven synthetic insecticides in controlling X. compactus. Beetle mortality sublethal effects tunneling, cultivation mutualist fungus reproduction assessed.Concentration-mortality curves determined for all tested Lambda-cyhalothrin was toxic insecticide, showing lowest estimated 90% 50% lethal concentrations (LC90 LC50 ), followed by deltamethrin thiamethoxam. Acetamiprid caused highest levels brood size reduction under extended laboratory conditions. Moreover, acetamiprid, thiamethoxam lambda-cyhalothrin greatest and, together with deltamethrin, strongly affected progeny occurrence inside infested galleries beetle size. Among bioinsecticides, pyrethrins significantly survival conditions, but not bioassays. Some had significant only when exposed fresher residues, highlighting differences toxicity persistence.This study provides first baseline data different modes action origin toward compactus, evidence that can cause multiple this pest. These findings help building suitable integrated pest management packages against © 2023 The Authors. Pest Management Science published John Wiley & Sons Ltd behalf Society Chemical Industry.

Language: Английский

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Spinosad‐associated modulation of select cytochrome P450s and glutathione S‐transferases in the Colorado potato beetle, Leptinotarsa decemlineata

Archives of Insect Biochemistry and Physiology, Journal Year: 2022, Volume and Issue: 112(3)

Published: Dec. 22, 2022

Abstract The Colorado potato beetle ( Leptinotarsa decemlineata (Say)) is an insect pest that threatens crops. Multiple options exist to limit the impact of this even though insecticides remain a primary option for its control. Insecticide resistance has been reported in beetles and better understanding molecular players underlying such process utmost importance optimize tools used mitigate insect. Resistance against insecticide spinosad work thus aims at exploring expression targets previously associated with response exposed compound. Amplification quantification transcripts coding cytochrome P450s glutathione S‐transferases were conducted via qRT‐PCR insects treated varying doses different time duration. This approach notably revealed differential CYP6a23 CYP12a5 low 4 h as well modulation CYP6a13 , CYP6d4 GST GST1 GST1‐Like high same RNAi‐based targeting CYP4g15 was marked reduction transcript 7 days following dsRNA injection former had on viability. In general, results presented here provide novel information regarding relevant reveal target consider development strategies aimed pest.

Language: Английский

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Pyrethroid-induced oxidative stress and biochemical changes in the primary mussel cell cultures

Environmental Science and Pollution Research, Journal Year: 2023, Volume and Issue: 30(16), P. 48484 - 48490

Published: Feb. 10, 2023

Language: Английский

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Effects of imidacloprid on Orius similis: assessing growth, development, and reproduction through age-stage two-sex life table analysis under contact and stomach toxicity treatments

Journal of Pest Science, Journal Year: 2024, Volume and Issue: unknown

Published: May 11, 2024

Language: Английский

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Residual toxicity of pesticide active substance commonly used in tomato crop on the predator Nesidiocoris tenuis (Heteroptera: Miridae)

Journal of Applied Entomology, Journal Year: 2024, Volume and Issue: unknown

Published: June 10, 2024

Abstract Nesidiocoris tenuis (Reuter) (Heteroptera Miridae) is a key biological control agent of the tomato leaf miner Tuta absoluta (Meyrick). However, in cases prey scarcity, this predator switches into phytophagous pest causing ring injuries stems plants. The aim study was to assess side effects dry residues and explore presence target site resistance mutations 10 insecticides, two bioinsecticides, an acaricide fungicide widely applied IPM, on adults N. collected from different regions Crete; Western Eastern island during successive years. Lethal toxicity trials were performed sprayed recorded 2 h, 7 14 days after exposure. At both populations, chlorpyrifos, acetamiprid thiamethoxam moderately harmful at application day slightly application. Only chlorpyrifos maintained its for more than days. All rest tested pesticides (emamectin benzoate, abamectin, chlorantraniliprole+abamectin, chlorantraniliprole, deltamethrin, tebufenpyrad, spinosad, Bacillus thuringiensis var kurstaki , metaflumizone myclobutanil) classified as harmless. Additionally, analysis insecticide sequences indicated absence populations. Overall, our findings illustrate impact 15 their residual mortality rates adults.

Language: Английский

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