Bulletin of Insectology (2011) 64, 69-72

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Runqian Mao, Jihuan Zheng and Runjie Zhang (2011)
Side effects of copper fungicides on Amblyseius cucumeris by laboratory bioassays
Bulletin of Insectology 64 (1), 69-72
Abstract: The predatory mite, Amblyseius cucumeris (Oudemans) (Acari Phytoseiidae), is an important biological control agent of thrips and pest mites in many various crops. To understand the side effect of copper fungicides on A. cucumeris, the toxicity of three copper fungicides, namely 77% copper hydroxide WP, 30% DT (copper succinate + copper glutarate+ copper adipate) WP and 95% copper gluconate, on the predatory mite were determined using "Slide-dip immersion method" in the laboratory. The results showed that the LC50 of 77% copper hydroxide WP, 30% DT WP, and 95% copper gluconate to A. cucumeris was 16.5032 × 103 mg/l, 19.6118 × 103 mg/l, and 92.3287 × 103 mg/l, respectively; based on the toxicity rating and the recommended field concentration, it was suggested that the three copper formulations had low or moderate toxicity to A. cucumeris.
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Database assignments for author(s): Runjie Zhang, Jihuan Zheng

Research topic(s) for pests/diseases/weeds:
biocontrol - natural enemies
Research topic(s) for beneficials or antagonists:
resistance to pesticides


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Amphitetranychus viennensis China (NE)
Neoseiulus cucumeris (predator) Amphitetranychus viennensis