Anoxia treatment for selectively controlling spider mitesTetranychus urticaeandPanonychus citriwith little impact on the predatory miteNeoseiulus californicus

Wang, C.-H.; Suzuki, Takeshi; Ohyama, Katsumi; Ullah, Mohammad Shaef; Gotoh, Tetsuo

doi:10.1080/01647954.2016.1171899

Cited by 3 publications

(1 citation statement)

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“…Respiration is essential for T. urticae eggs; they die under anoxic (0% O 2 ) conditions at 25°C for > 8 h [22, 23]. Since two perforation organs penetrate the T. urticae chorion for taking in air [24], it was initially considered that biopesticides would block these organs and suffocate the eggs.…”

Section: Discussionmentioning

confidence: 99%

A vegetable oil–based biopesticide with ovicidal activity against the two‐spotted spider mite, Tetranychus urticae Koch

Takeda

Takata

Arai

et al. 2020

Engineering in Life Sciences

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A recently developed biopesticide made of safflower and cottonseed oils has excellent ovicidal activity against the hard‐to‐control spider mite Tetranychus urticae Koch (Acari: Tetranychidae). It has attracted attention as a sustainable treatment for controlling T. urticae because it has low potential for promoting resistance and little effect on the predatory mite Neoseiulus californicus (McGregor) (Acari: Phytoseiidae), which is an important natural enemy of spider mites. Here, we investigated the mechanism of its ovicidal activity against T. urticae. The oil droplets in the oil‐in‐water emulsion of the biopesticide strongly adhered to T. urticae eggs, seeped through the chorion being cut during hatching, and inhibited the embryonic rotational movement necessary for cutting and hatching. No adverse effect was observed on N. californicus eggs even in undiluted biopesticide. We conclude that this biopesticide and N. californicus can be used simultaneously in the integrated management of T. urticae in oily biopesticide‐tolerant plant species.

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Section: Discussionmentioning

confidence: 99%