Journal article
Heating condition effects on thermal resistance of fifth-instar Amyelois transitella (Walker) (Lepidoptera: Pyralidae)
Journal of stored products research, Vol.41(4), pp.469-478
2005
Handle:
https://hdl.handle.net/2376/115287
Abstract
Successful development of a thermal treatment protocol depends on reliable information on fundamental thermal death kinetics of targeted insects under different heating conditions. The effects of heating rates (1, 10, and 15
°C
min
−1), pre-treatment conditioning (30
°C+6
h), and the difference between long-term laboratory cultures and recently isolated cultures on thermal mortality of fifth-instar navel orangeworm,
Amyelois transitella (Walker), were studied using a heating block system. There was no significant difference in insect mortality resulting from heating rates of 10 and 15
°C
min
−1. Temperature control at 1
°C
min
−1 was more uniform than for the other heating rates, resulting in reduced variability for insect mortality. The mean mortality at the heating rate of 1
°C
min
−1 was significantly lower than for the two faster heating rates only at 48
°C+30
min. The pre-treatment conditioning of fifth-instar
Amyelois transitella enhanced their thermotolerance only at certain temperature–time combinations. Fifth-instars from long-term laboratory and recently isolated cultures were equally susceptible to elevated temperatures. Therefore, thermal death kinetic information obtained from the long-term laboratory cultures can be used to develop thermal protocols against field pests.
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Details
- Title
- Heating condition effects on thermal resistance of fifth-instar Amyelois transitella (Walker) (Lepidoptera: Pyralidae)
- Creators
- S Wang - Department of Biological Systems Engineering, Washington State University, 213 L.J. Smith Hall, Pullman, WA 99164-6120, USAJ.A Johnson - USDA-ARS San Joaquin Valley Agricultural Sciences Center, 9611 S. Riverbend Avenue, Parlier, CA 93648, USAJ Tang - 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, USA
- Publication Details
- Journal of stored products research, Vol.41(4), pp.469-478
- Academic Unit
- Biological Systems Engineering, Department of
- Publisher
- Elsevier Ltd
- Identifiers
- 99900548463801842
- Language
- English
- Resource Type
- Journal article