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Your Position :Home->Past Journals Catalog->2011年48 No.3

Study on predation of Stethorus punctillum and Scolothrips takahashii on Tetranychus cinnabarinus
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Key Words:Stethorus punctillum, Scolothrips takahashii, Tetranychus cinnabarinus, predation
Abstract:       The predatory abilities of Stethorus punctillum  Weise and Scolothrips takahashii  Priesener adults on Tetranychus cinnabarinus (Boisduval) adults were studied under laboratory conditions.The results showed that the functional responses of S.punctillum and S.takahashii to T.cinnabarinus both followed the Holling type Ⅱmodel; the respective fitted Holling disc equations were Na=0.7181N0/(1+0.0175N0) and Na=0.5168N0/(1+0.0136N0).The maximum daily number of T.cinnabarinus consumed by individual S.punctillum and S.takahashii were 41.11 and 38.14, respectively and the respective prey-handling times for each species were 0.0243 and 0.0262 d. The models of intraspecific interference for S.punctillum and S.takahashii were E=0.1916P-0.1805 and E=0.1535P-0.4684, respectively.S.punctillum adults were more effective predators of T.cinnabarinus adults than S.takahashii adults.
 
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