Florida Entomologist (2014) 97, 1157-1166

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Shan Jiang, Naiqin Zhang, Sifang Wang, Junping Wang, Jie Li, Bin Zhang and Changying Zheng (2014)
Effects of heat shock on life parameters of Frankliniella occidentalis (Thysanoptera: Thripidae)
Florida Entomologist 97 (3), 1157-1166
Abstract: The western flower thrips (WFT), Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), an invasive insect pest in China, causes great economic losses worldwide. To understand the effects of heat shock on WFT population dynamics, we constructed life tables to quantify the effects of heat shock on the growth rate, survival, and fecundity of WFT offspring. WFT adults and 2nd instars were heat shocked at 45 °C, and the treatment was repeated after a 24-h recovery period. Heat-shocked and control insects were reared on the leaves of purple cabbage (Brassica oleracea L.; Brassicales: Brassicaceae), and various lifetable and development parameters of their F1 offspring were evaluated. The duration of the immature period of the offspring of heat-shocked adults was not significantly shorter than that of the control, whereas the duration of the immature period of the offspring of the heatshocked 2nd instars was longer than that of the other treatments, indicating that heat-shock of second instars slowed the development of their offspring. The preoviposition period during the adult stage and the total oviposition period of the F1 offspring of the heat-shocked adults were significantly longer than those of the control. The fecundities of the F1 offspring of the heat-shocked 2nd instars and adults were 81.8 and 70.6 eggs/female, respectively, both of which were significantly less than that of the control (149.1). The use of heated tents might be effective for the prevention and control of WFT infestations in greenhouses. Our life-table analysis of the effects of heat shock on F1 survival and reproduction provides a strong basis for future studies of thermal treatments for the control of WFT.
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Research topic(s) for pests/diseases/weeds:
environment - cropping system/rotation
general biology - morphology - evolution


Pest and/or beneficial records:

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


Frankliniella occidentalis Clover (Trifolium) China (NE)