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Lethal Effects of High Temperatures on Brown Marmorated Stink Bug Adults before and after Overwintering

Department of Agronomy Food Natural Resources Animals and Environment, University of Padova, 35020 Legnaro, Padova, Italy
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Insects 2019, 10(10), 355; https://doi.org/10.3390/insects10100355
Received: 29 August 2019 / Revised: 11 October 2019 / Accepted: 15 October 2019 / Published: 18 October 2019
The invasive brown marmorated stink bug, Halyomorpha halys, is causing economic and ecological damage in invaded areas. Its overwintering behavior warrants mitigation practices in warehouses and shipping operations. The aim of this study was to characterize the mortality response curves of H. halys adults to short high-temperature exposure. Here we compared field-collected individuals entering (ENA) and exiting diapause (EXA). EXA adults displayed increased susceptibility to high temperatures compared to ENA individuals. Complete mortality of all tested individuals was obtained after 10 min exposure at 50.0 °C, and after 15 (EXA) or 20 min (ENA) at 47.5 °C. The nutritional status of these insects had no effect on high-temperature tolerance. The mortality curves obtained here may be used for the definition of cost-effective heat treatments aimed at the H. halys control. View Full-Text
Keywords: rapid heating; temperature tolerance; Halyomorpha halys; quarantine; nutrient index; heat treatment; diapause rapid heating; temperature tolerance; Halyomorpha halys; quarantine; nutrient index; heat treatment; diapause
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Scaccini, D.; Duso, C.; Pozzebon, A. Lethal Effects of High Temperatures on Brown Marmorated Stink Bug Adults before and after Overwintering. Insects 2019, 10, 355.

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