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Predation of Sitobion miscanthi (Takahashi) by Chrysoperla nipponensis (Neuroptera: Chrysopidae)Reared on a Semisolid Artificial Diet

LI Guoping, FENG Hongyun, FENG Hongqiang, HUANG Bo, QIU Feng   

  1. Henan Key Laboratory of Crop Pest Control/Key Laboratory of Crop Integrated Pest Management in Southern Part of Northern China, Ministry of Agriculture/Institute of Plant Protection, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
  • Received:2015-08-11 Online:2016-04-08 Published:2016-04-08

Abstract: To evaluation the predatory capacity of Chrysoperla nipponensis reared on a semisolid artificial diet, the functional response of the larva of C. nipponensis to Sitobion miscanthi (Takahashi) and the mutual interference in the predator were investigated in the laboratory. There was a positive relationship between the preyed amount and prey density. The predatory functional response of C. nipponensis fitted well with Holling's Equation Ⅱ. The maximal theoretical predation capacities of 1st, 2nd and 3rd instars of C. nipponensis were 42, 179 and 204 per day, respectively. The mutual interference in the 2nd instar predators could be simulated by the model E=0.5074P-0.6627, indicating that the predation rate decreased with the increase of the predator density.

Key words: Chrysoperla nipponensis, artificial diet, Sitobion miscanthi, predation functional response, interference response

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