Eugenol and menthol synergize the toxicity of permethrin in the blood-sucking bug, Triatoma infestans

Reynoso, Mercedes María Noel; Zerba, Eduardo; Alzogaray, Raúl A.

doi:10.1016/j.actatropica.2023.106900

Cited by 1 publication

(1 citation statement)

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“…In addition, eugenol even showed antagonistic effects with β-cypermethrin at high concentrations. In the previous report, eugenol synergized permethrin on blood-sucking bugs but not on deltamethrin against bedbugs . This suggests a certain specificity in the potentiation of compounds against insecticides.…”

Section: Discussionmentioning

confidence: 73%

Insecticidal Activity of Essential Oils and Their Synergistic Effect on Improving the Efficacy of β-Cypermethrin against Blattella germanica

Zhu,

Lai,

et al. 2024

J. Agric. Food Chem.

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We screened the contact activity of 32 commercial essential oils (EOs) and their synergistic effect with βcypermethrin against Blattella germanica. Results showed that the most effective EOs against B. germanica were from Illicium verum, Syzygium aromaticum, and Cinnamomum camphora, with LD 50 values of less than 500 μg/insect. The most potent synergistic effects of β-cypermethrin on B. germanica were from Dysphania ambrosioides and Mentha canadensis. Both oils have a co-toxic factor of 133.33. The results of the major compound testing of the EOs showed that trans-anisaldehyde and thymol have the best insecticidal activity against B. germanica, with LD 50 values of 141.30 and 138.61 μg/insect, respectively. The compounds with the best synergistic effect on β-cypermethrin were γ-terpinene and linalool at a concentration of 0.5%. The co-toxic factors for γ-terpinene and linalool were 150 and 133.33, respectively, which were similar to the synergistic effect observed with 2% piperonyl butoxide.

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Section: Discussionmentioning

confidence: 73%