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2021 Volume 34 Issue 4
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MENG Baoan, ZHAO Zhengxiong, LI Yiqi, et al. Effects of Temperature and Parasitic Density of Aphidius gifuensis on Eclosion rate, Parasitism Rate and Double Parasitism of Mummified Aphid[J]. PLANT HEALTH AND MEDICINE, 2021, (4): 51-55. doi: 10.13718/j.cnki.zwys.2021.04.011
Citation: MENG Baoan, ZHAO Zhengxiong, LI Yiqi, et al. Effects of Temperature and Parasitic Density of Aphidius gifuensis on Eclosion rate, Parasitism Rate and Double Parasitism of Mummified Aphid[J]. PLANT HEALTH AND MEDICINE, 2021, (4): 51-55. doi: 10.13718/j.cnki.zwys.2021.04.011
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Effects of Temperature and Parasitic Density of Aphidius gifuensis on Eclosion rate, Parasitism Rate and Double Parasitism of Mummified Aphid

  • 1. Production Department of Huichuan District Branch of Guizhou Tobacco Company, Zunyi Guizhou 563000, China;

  • 2. Production Department of Meitan County Branch of Guizhou Tobacco Company, Zunyi Guizhou 564100, China;

  • 3. Production Department of Fenggang County Branch of Guizhou Tobacco Company, Zunyi Guizhou 564200, China;

  • 4. College of Tobacco Science, Yunnan Agricultural University, Kunming 650201, China

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  • Received Date: 07/06/2021

  • MSC: S476+.3

  • In order to clarify the effects of temperature and parasitism density of Aphidius gifuensis (Ashmead) on the emergence of mummified aphids, an experiment was carried out at Hongdajinyuan Specialized Tobacco Leaf Research and Development Base in Midu County of Yunnan, in which 5 temperature treatments and 5 parasitism density treatments of A. gifuensis were made. The results showed that with a similar parasitism density,the eclosion rate of mummified aphids was the highest at 20℃ (84.50%). The mortality rate of mummified aphid gradually increased with increasing temperature, and eclosion barely occurred in hyper-parasitoid at 10-15℃. Under the condition of 25-30℃, the emergence number of mummified aphid was the highest, and the emergence number of hyper-parasitoid was as high as 8, suggesting that high temperature promoted the emergence of hyper-parasitoid. Under the same temperature, the eclosion rate of mummified aphids decreased gradually with increasing parasitism density. When the parasitism density reached 1.81-2.10 head/cm2, the eclosion rate of mummified aphid sharply dropped to 20.50%.
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Effects of Temperature and Parasitic Density of Aphidius gifuensis on Eclosion rate, Parasitism Rate and Double Parasitism of Mummified Aphid

  • Received Date: 07/06/2021

Abstract: In order to clarify the effects of temperature and parasitism density of Aphidius gifuensis (Ashmead) on the emergence of mummified aphids, an experiment was carried out at Hongdajinyuan Specialized Tobacco Leaf Research and Development Base in Midu County of Yunnan, in which 5 temperature treatments and 5 parasitism density treatments of A. gifuensis were made. The results showed that with a similar parasitism density,the eclosion rate of mummified aphids was the highest at 20℃ (84.50%). The mortality rate of mummified aphid gradually increased with increasing temperature, and eclosion barely occurred in hyper-parasitoid at 10-15℃. Under the condition of 25-30℃, the emergence number of mummified aphid was the highest, and the emergence number of hyper-parasitoid was as high as 8, suggesting that high temperature promoted the emergence of hyper-parasitoid. Under the same temperature, the eclosion rate of mummified aphids decreased gradually with increasing parasitism density. When the parasitism density reached 1.81-2.10 head/cm2, the eclosion rate of mummified aphid sharply dropped to 20.50%.

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