Effects of Trialeurodes vaporariorum Fed on Transgenic Cotton on the Growth and Predation Behavior of Pardosa T-insignita

ZHANG Guang-duo et al(Nanyang Institute of Technology,Nanyang,Henan 473061)

Pardosa T-insignita;Trialeurodes vaporariorum;Transgenic cotton;Growth;Predatory functional responses

[Objective] The aim was to discuss the effects of Trialeurodes vaporariorum fed on transgenic cotton on the growth and predation behavior of Pardosa T-insignita.[Method] Effects of T.vaporariorum fed on transgenic cotton and conventional cotton on developmental duration,adult body weight,mortality rate,ratio of sex,hunger tolerance and predatory functional response of P.T-insignita were determined under laboratory condition.[Result] The results showed that there no significant difference in the development duration,adult body weight,mortality rate and ratio of sex of P.T-insignita nymphs reared on transgenic cotton fed T.vaporariorum larvae and those on conventional cotton fed ones.And the predatory functional responses results showed that the predatory functional responses by adult P.T-insignita to larvae of T.vaporariorum satisfied HollingⅡ disc equation.Compared with fed on conventional cotton,the instantaneous discovery rates and hunger tolerance of P.T-insignita were significant higher than fed on those transgenic cotton.[Conclusion] The study provides a basis for researching the effects of transgenic cotton on the natural predators in cotton field.