Journal of Economic Entomology (2016) 109, 62-69

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Weiwei Zhao, Yanran Wan, Wen Xie, Baoyun Xu, Youjun Zhang, Shaoli Wang, Guoshu Wei, Xiaomao Zhou and Qingjun Wu (2016)
Effect of spinosad resistance on transmission of Tomato spotted wilt virus by the western flower thrips (Thysanoptera: Thripidae)
Journal of Economic Entomology 109 (1), 62-69
Abstract: Tomato spotted wilt virus (TSWV) is transmitted by Frankliniella occidentalis (Pergande) in a persistent–propagative manner. We previously observed significant results in terms of feeding behavior of spinosad-susceptible (Ivf03) and -resistant (Spin-R) strains of F. occidentalis using electrical penetration graph. TSWV transmission by the two strains was compared in the present study. The results showed that the titer of TSWV-N RNA (a part of S RNA of TSWV and encoding the nucleocapsid protein) in Ivf03 and Spin-R strains was not significantly different after a 48-h inoculation access period. The TSWV transmission rate did not significantly differ between the two strains and was 51.0% for Ivf03 and 44.4% for Spin-R. The virus transmission rate was significantly higher for males than females of both strains. The virus transmission rate for males and females of Ivf03 was 68.1 and 33.8%, respectively; however, in case of Spin-R, it was 60 and 28.8% for males and females, respectively. Additionally, number of probes and duration of probes were generally greater for viruliferous females of Ivf03 than for viruliferous females of Spin-R but the total number and duration of noningestion probes did not significantly differ between males of the two strains. The latter finding behavior may help explain the similar transmission rates for the susceptible and resistant strains.
(The abstract is excluded from the Creative Commons licence and has been copied with permission by the publisher.)
Link to article at publishers website
Database assignments for author(s): Qing Jun Wu, Shaoli Wang

Research topic(s) for pests/diseases/weeds:
transmission/dispersal of plant diseases


Pest and/or beneficial records:

Beneficial Pest/Disease/Weed Crop/Product Country Quarant.


Frankliniella occidentalis
Tomato spotted wilt virus