Relative toxicity of ten acaricides against different developmental stages of Tetranychus cinnabarinus
Author of the article:GAO De-Liang;SONG Hua-Wen;ZHUANG Zhi-Guo;XU Na-Na;HU Zun-Ji;ZHUANG Zhan-Xing
Author's Workplace:Shandong Academy of Pesticides Sciences, Key Laboratory for Chemical Pesticide of Shandong Province, Jinan 250100, China;Shandong Academy of Pesticides Sciences, Key Laboratory for Chemical Pesticide of Shandong Province, Jinan 250100, China;Shandong Academy of Pesticides Sciences, Key Laboratory for Chemical Pesticide of Shandong Province, Jinan 250100, China;Shandong Academy of Pesticides Sciences, Key Laboratory for Chemical Pesticide of Shandong Province, Jinan 250100, China;Shandong Academy of Pesticides Sciences, Key Laboratory for Chemical Pesticide of Shandong Province, Jinan 250100, China;Shandong Academy of Pesticides Sciences, Key Laboratory for Chemical Pesticide of Shandong Province, Jinan 250100, China
Key Words:Tetranychus cinnabarinus; developmental stage; acaricide; toxicity
Abstract:
[Objectives] To determine the activity of ten acaricides to
different development stages of Tetranychus cinnabarinus. [Methods] Toxicities of these acaricides against adults, eggs and nymphs of T.
cinnabarinus were investigated using
dipping method. [Results] Results
showed that cyflumetofen, abamectin and bifenazate displayed high activity to
all three stages of T. cinnabarinus. Etoxazole and spirodiclofen showed high toxicity to eggs and nymphs of T.
cinnabarinus, but low activity to
adults. Fenpropathrin exhibited higher activity to adults or nymphs than to eggs of T. cinnabarinus. Fenpyroximate, pyridaben and azocyclotin
all had low activity to different development stages of T.
cinnabarinus. All acaricides showed
higher toxicity to nymphs than to adults or eggs. Etoxazole, spirodiclofen,
bifenazate, fenpyroximate and propargite showed higher activity to eggs than to
adults of T. cinnabarinus,
but cyflumetofen, abamectin, fenpropathrin, pyridaben and azocyclotin had
opposite results. [Conclusion]
These results indicated that the
toxicities of ten acaricides had different activities to development stages of T. cinnabarinus,
and the suitable acaricides should be selected according to the occurrence of T. cinnabarinus.