The predatory mite, Phytoseius plumifer （Canestrini ＆ Fanzago）, is one of the most abundant natural enemies and efficient predator of phytophagous mites in Iran. The miticides hexythiazox （Nisorun, EC 10%）, fenpy...The predatory mite, Phytoseius plumifer （Canestrini ＆ Fanzago）, is one of the most abundant natural enemies and efficient predator of phytophagous mites in Iran. The miticides hexythiazox （Nisorun, EC 10%）, fenpyroximate （Ortus, SC 5%）, and abamectin （Vertimec, EC 1.8%） were tested in the laboratory for their side effects on P. plumifer. The miticides were applied at the highest field recommended concentration （N） to detached leaves using a Potter Tower to deposit 2 mg spray solution per cm2. Percent predator mortality was evaluated from the protonymph up to the adult stage including the first five days of the oviposition period. Analysis of data showed that the total effect values of hexythiazox were below the lower threshold, and thus it could be considered to be a harmless miticide to P. plumifer. In contrast, the total effects of fenpyroximate and abamectin were found harmful to the predatory mite at the highest field recommended concentrations.展开更多
Tibet is a biodiversity-rich area in China. But until now, no water mites have been recorded from Tibet. In this study, two water mite species, Sperchon glandulosus Koenike, 1886 and Sperchon plumifer Thor, 1902 are r...Tibet is a biodiversity-rich area in China. But until now, no water mites have been recorded from Tibet. In this study, two water mite species, Sperchon glandulosus Koenike, 1886 and Sperchon plumifer Thor, 1902 are reported for the first time from Tibet, and Sperchon glandulosus is newly recorded from China. Descriptions and illustrations of Sperchon glandulosus are given herein. DNA barcodings for the two species are also referenced. A key to the 22 species（females） in the genus Sperchon from China is presented.展开更多
基金partly supported by Iran National Science Foundation (84-63)
文摘The predatory mite, Phytoseius plumifer （Canestrini ＆ Fanzago）, is one of the most abundant natural enemies and efficient predator of phytophagous mites in Iran. The miticides hexythiazox （Nisorun, EC 10%）, fenpyroximate （Ortus, SC 5%）, and abamectin （Vertimec, EC 1.8%） were tested in the laboratory for their side effects on P. plumifer. The miticides were applied at the highest field recommended concentration （N） to detached leaves using a Potter Tower to deposit 2 mg spray solution per cm2. Percent predator mortality was evaluated from the protonymph up to the adult stage including the first five days of the oviposition period. Analysis of data showed that the total effect values of hexythiazox were below the lower threshold, and thus it could be considered to be a harmless miticide to P. plumifer. In contrast, the total effects of fenpyroximate and abamectin were found harmful to the predatory mite at the highest field recommended concentrations.
基金supported by the National Natural Science Foundation of China(31301895)the Natural Science Fund of Education Department of Anhui Province,China(KJ2018A0402)
文摘Tibet is a biodiversity-rich area in China. But until now, no water mites have been recorded from Tibet. In this study, two water mite species, Sperchon glandulosus Koenike, 1886 and Sperchon plumifer Thor, 1902 are reported for the first time from Tibet, and Sperchon glandulosus is newly recorded from China. Descriptions and illustrations of Sperchon glandulosus are given herein. DNA barcodings for the two species are also referenced. A key to the 22 species（females） in the genus Sperchon from China is presented.
