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2011年48 No.3
The effects of tomato plants inoculated by tomato spotted wilt virus on biological characteristics of western flower thrips
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Key Words：Frankliniella occidentalis, tomato spotted wilt virus, host plant, biological characteristics
Abstract： The western flower thrip, Frankliniella occidentalis (Pergande), is an invasive pest in China.The effects of these thrips feeding on three kinds of mature excised pepper foliage; healthy (CK), mechanically damaged (MD) and mechanically damaged and inoculated with tomato spotted wilt virus (MI) was studied.Developmental periods of preadult thrips fed on CK, MI and MD foliages were 12.68, 12.99 and 11.79 d, respectively.There were no significant differences in adult longevity and female fecundity between thrips fed on the different diets (P > 0.05).The intrinsic rate of increase (rm) of thrip populations fed on CK, MI and MD were 0.1362, 0.1526, 0.1292 d-1, respectively.In conclusion, the results indicate that although infection of host plants by TSWV doesn’t shorten developmental time, prolong adult longevity, or increase the fecundity of western flower thrips, it does accelerate population growth.