Journal article
Thermal resistance of different life stages of codling moth (Lepidoptera: Tortricidae)
Journal of stored products research, Vol.40(5), pp.565-574
2004
Handle:
https://hdl.handle.net/2376/109707
Abstract
Phytosanitation regulations in several international markets require postharvest treatments to control codling moth,
Cydia pomonella (L.) (Lepidoptera: Tortricidae), in various commodities. Thermal treatments are gaining acceptance to replace chemical fumigation. Determining the most thermal-tolerant life stage is essential in the development of effective postharvest insect control protocols based on thermal energy. A heating block system was used to evaluate relative heat resistance of five different life stages of codling moth: white-ring eggs, black-head eggs, third-instar, fifth-instar, and diapausing larvae, at a heating rate of 15°C/min. The fifth-instar was the most heat-resistant life stage in the tested temperature range of 50–52°C except for diapausing larvae. Thermal death kinetic data of diapausing fifth-instar larvae were determined and also compared with the published TDT curve of non-diapausing larvae using the same heating block system. Both diapausing and non-diapausing larvae were dead after treatments at 50°C for 5
min and 52°C for 2
min. However, at the lower temperatures or shorter times, diapausing larvae had lower mortality than non-diapausing larvae.
Metrics
14 Record Views
Details
- Title
- Thermal resistance of different life stages of codling moth (Lepidoptera: Tortricidae)
- Creators
- S Wang - Department of Biological Systems Engineering, Washington State University, 213 L.J. Smith Hall, Pullman, WA 99164-6120, USAX Yin - Department of Biological Systems Engineering, Washington State University, 213 L.J. Smith Hall, Pullman, WA 99164-6120, USAJ Tang - Department of Biological Systems Engineering, Washington State University, 213 L.J. Smith Hall, Pullman, WA 99164-6120, USAJ.D Hansen - USDA-ARS Yakima Agricultural Research Laboratory, 5230 Konnowac Pass Road, Wapato, WA 98951, USA
- Publication Details
- Journal of stored products research, Vol.40(5), pp.565-574
- Academic Unit
- Biological Systems Engineering, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900547186301842
- Language
- English
- Resource Type
- Journal article