Research Article

Impact of microemulsion formulations of selected botanical acaricides on the functional and numerical responses of Amblyseius swirskii Athias-Henriot, 1962 (Acari: Phytoseiidae) feeding on Tetranychus urticae Koch, 1836 (Acari: Tetranychidae)

Volume: 49 Number: 3 September 30, 2025
TR EN

Impact of microemulsion formulations of selected botanical acaricides on the functional and numerical responses of Amblyseius swirskii Athias-Henriot, 1962 (Acari: Phytoseiidae) feeding on Tetranychus urticae Koch, 1836 (Acari: Tetranychidae)

Abstract

This study investigated the functional and numerical responses of Amblyseius swirskii Athias-Henriot, 1962 (Acari: Phytoseiidae) when preying on females of Tetranychus urticae Koch, 1836 (Acari: Tetranychidae) under exposure to microemulsion formulations of a terpenoid blend, neem and orange oils compared to a microbial toxin acaricide, milbemectin. Acaricide applications were conducted on eggplant leaves, and their effects were assessed 168 h post-treatment under controlled laboratory conditions (70±5% RH, 27±1°C, and a 16 h light: 8 h dark) during the 2023-2024 experimental period in Bursa Uludag University and Adana Biological Control Research Institute. According to the logistic regression analysis, the control, orange oil, neem oil, and terpenoid blend treatments exhibited a Type II functional response, while milbemectin resulted in a Type III response. The attack rate and handling time of A. swirskii were significantly affected by treatment type. The control group exhibited the highest attack rate (1.03 h⁻¹) and the longest handling time (0.0272 h). Botanical acaricides, orange oil (0.78 h⁻¹), neem oil (0.63 h⁻¹), and the terpenoid blend (0.68 h⁻¹), reduced the attack rate and shortened handling time. Milbemectin had the most adverse effects, resulting in the lowest attack rate (0.29 h⁻¹). These findings suggest that microemulsion formulations of botanical acaricides are less disruptive to A. swirskii than milbemectin and may be better suited for incorporation into integrated pest management (IPM).

Keywords

Supporting Institution

TAGEM, Türkiye, Grant Project No: TAGEM/BSAD/A/23/A2/P5/5807

Project Number

TAGEM Grant Project No: 5807

Ethical Statement

The authors declare that they have no competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.

Thanks

The authors declare that they have no competing financial interests or personal relationships that could have appeared to influence the work reported in this paper. The research, which is the doctoral thesis of the first author, was funded by TAGEM under grant number TAGEM/BSAD/A/23/A2/P5/5807. We would like to thank Adana Biological Control Research Institute for providing laboratory facilities and giving opportunities to conduct research, and Nanomik Biotecnology Company for supplying the formulations for the biological tests.

References

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Details

Primary Language

English

Subjects

Acarology in Agriculture , Entomology in Agriculture

Journal Section

Research Article

Publication Date

September 30, 2025

Submission Date

May 15, 2025

Acceptance Date

August 31, 2025

Published in Issue

Year 2025 Volume: 49 Number: 3

APA
Mertoglu Boz, G., & Kumral, N. A. (2025). Impact of microemulsion formulations of selected botanical acaricides on the functional and numerical responses of Amblyseius swirskii Athias-Henriot, 1962 (Acari: Phytoseiidae) feeding on Tetranychus urticae Koch, 1836 (Acari: Tetranychidae). Turkish Journal of Entomology, 49(3), 321-336. https://doi.org/10.16970/entoted.1699684