Plant Protection

Effect of Different Temperatures and Spatial Scales on Predation of Coccus hesperidum by Propylaea japonica

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  • (1. Garden Institute,Xuzhou Vocational College of Bioengineering,Xuzhou 221006,China;2.Xuzhou Botanical Garden,Xuzhou 221006,China)

Received date: 2019-05-12

  Online published: 2019-12-15

Abstract

To ascertain the control potential of Propylaea japonica on Coccus hesperidum,the functional response and searching efficiency of P.japonica(4th instar larvae and adults) on C.hesperidum(1st instar nymph) were studied at different temperatures and spatial scales in a manual climatic box. The results showed that the predation efficacies of P. japonica (4th instar larvae and adults) on C. hesperidum (1st instar nymph) affected by temperature and spatial scale all confirmed to the HollingⅡdisc equation,but had different functional response parameters.The predation efficacy (a′/Th) and searching efficiency of P.japonica (4th instar larvae and adults) on C.hesperidum(1st instar nymph) had a quadratic function relationship with temperature,with the maximum at 25℃ and a suitable temperature of 21—29℃ .The predation efficacy and searching efficiency of P.japonica (4th instar larvae and adults) on C.hesperidum(1st instar nymph) decreased with the increase of test space.

Cite this article

HU Changxiao, CAO Dan, XU Wantai . Effect of Different Temperatures and Spatial Scales on Predation of Coccus hesperidum by Propylaea japonica[J]. Journal of Henan Agricultural Sciences, 2019 , 48(12) : 73 -78 . DOI: 10.15933/j.cnki.1004-3268.2019.12.011

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