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- W2364286785 abstract "[Objective] To explore the selective predation of Harmonia axyridis(Pallas) var.spectabilis,to Chaitophorus populeti(Panzer) and C.populiabae(Boyer de Fonseolombe).[Method] Under the experimental conditions,the predation amount of the two aphids by Harmonia axyridis(Pallas) var.spectabilis at different densities was detected.[Result] When the number of the two pest populations increased synchronously,EG-S and EJ changed from +1 to 0,EI decreased gradually within the range of 0 to-1,and the decrease extent was small,indicating that the ladybird preferred preying C.populiabae to C.populeti;when the quantity of C.populeti stayed unchanged and the quantity of C.populiabae increased,EG-S and EJ changed from +1 to ∞,EI increased gradually within the range of 0 to +1,indicating that the ladybird liked to prey C.populiabae;when the quantity of C.populiabae stayed unchanged and the quantity of C.populeti increased,EG-S and EJ gradually decreased from +1 to 0,EI gradually increased within the range of 0 to-1,indicating that the ladybird prefer to prey C.populeti.The predation amount was the same to the selection index.[Conclusion] The selective predation of Harmonia axyridis(Pallas) var.spectabilis to those two aphids depended on their population quantity." @default.
- W2364286785 created "2016-06-24" @default.
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- W2364286785 date "2011-01-01" @default.
- W2364286785 modified "2023-09-27" @default.
- W2364286785 title "Study on the Selective Effect of Harmonia axyridis(Pallas) var.spectabilis to Chaitophorus populeti and C.populiabae" @default.
- W2364286785 hasPublicationYear "2011" @default.
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