Effects of Temperature on the Reproduction of Overwintering Females and the Development of the First Generation of Tetranychus viennensis

LI Ding-xu et al (Henan university of Science and Technology,Luoyang,Henan 471003)  

[Objective] The research aimed to study the reproductive behavior and growth characters of overwintering females of Tetranychus viennensis so as to improve the accuracy of forecast.[Method] Overwintering female of T.viennensis were reared by the method of leaf dish and its reproductive behavior and growth characters were observed.[Result] The temperature showed no significant effect on the fecundity of overwintering females and the longevity of the adults was shortened with the rising temperature.The reproductive rate had significant difference at different temperatures and accelerated with the rising of temperature.The linear relationship between population increasing velocity and temperature was rm=0.012 4×T-0.113.The fecundity in age-specific of T.vienennsis had significant difference under different temperatures.[Conclusion] The temperature in the early spring showed no significant effect on the fecundity of females,but it could affect the reproductive rate and longevity.The temperature had little effect on the sex ratio of the first generation.The reproduction of T.viennensis in early spring had significant difference with that in the summer population.

【Key Words】： Tetranychus viennensis Overwintering female Sex ratio Temperature
【Fund】： 河南科技大学科学研究基金资助项目
【CateGory Index】： S436.6

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