Thermal conditioning in Bactrocera tryoni eggs (Diptera: Tephritidae) following hot-water immersion

Waddell, B. C.; Jones, Virginia M.; Petry, Robert J.; Sales, Francisco Alexandre de Lima; Paulaud, David; Maindonald, John; Laidlaw, W. G.

doi:10.1016/s0925-5214(00)00170-8

Cited by 29 publications

(21 citation statements)

References 21 publications

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“…Waddell et al (132) calculated the extra time it would take to kill eggs of the fruit fly Bactrocera tryoni, if it experienced high, sublethal temperatures prior to a lethal heat treatment, and examined the effects of various heating rates on treatment efficacy. The thermal conditions experienced by the insect prior to treatment, particularly in the 32 to 42…”

Section: Generic Treatmentsmentioning

confidence: 99%

Current Trends in Quarantine Entomology

Follett

Neven

2006

Annu. Rev. Entomol.

266

164

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Key Words quarantine pests, phytosanitary measures, probit 9 alternatives, generic treatments, systems approach ■ Abstract With world trade in agricultural commodities increasing, the introduction of exotic insects into new areas where they become pests will increase. The development and application of quarantine treatments or other mitigation approaches to prevent pest introduction in traded commodities raise many research and regulatory issues. The probit 9 standard for quarantine treatment efficacy has given way to riskbased alternatives. Varietal testing may have merit for some treatments or commodities but not for others. Development of generic treatments to control broad groups of insects or insects in all commodities can expedite new trade in agricultural products. Area-wide pest management programs lower pest levels before harvest and improve the quarantine security provided by any postharvest treatments. Systems approaches capitalize on cumulative pest mortality from multiple control components to achieve quarantine security in an exported commodity. Certain quarantine treatment technologies such as irradiation are not universally accepted, which is slowing their adoption. Standardized phytosanitary measures and research protocols are needed to improve the flow of information when countries propose to trade in a regulated commodity.

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Section: Generic Treatmentsmentioning

confidence: 99%

Current Trends in Quarantine Entomology

Follett

Neven

2006

Annu. Rev. Entomol.

266

164

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“…As a result, conventional heat treatments typically take long times to achieve required security against insects. Most insects may have adequate time to adapt to the heat and increase thermal resistance (Waddell et al, 2000).…”

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confidence: 99%

Thermal death kinetics and heating rate effects for fifth-instar Cydia pomonella (L.) (Lepidoptera: Tortricidae)

Wang

Ikediala

Tang

et al. 2002

Journal of Stored Products Research

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Thermal death kinetic parameters of fifth-instar codling moths (Cydia pomonella (L.)) and the effect of three heating rates (11C min À1 , 101C min À1 , and 181C min À1 ) on larval mortality were determined by a heating block system. The insects were heated to four temperatures (461C, 481C, 501C, and 521C) held for predetermined periods followed by 24 h storage at 41C before mortality evaluation. Thermal death kinetics for fifth-instar codling moths followed a 0.5th order of kinetic reaction. Minimum time required to achieve 100% mortality of a given population decreased with temperature in a semi-logarithmic manner. No larval survival was observed in samples of 600 insects after exposure to 461C, 481C, 501C, and 521C for 50, 15, 5, and 2 min, respectively. Activation energy for thermal kill of fifth-instar codling moths at the heating rate of 181C min À1 was estimated to be about 472 kJ mol À1 . The lethal time accumulated during the ramp period was about 1.8, 0.2, and 0.1 min for the heating rates of 11C min À1 , 101C min À1 , and 181C min À1 , respectively. r

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“…These methods include directly exposing insects in a water bath for specific times, heating insects in tubes which in turn are submerged in a water bath, or heating insects in fruits (Yokoyama et al, 1991;Thomas and Mangan, 1997;Waddell et al, 2000). A heating block system was developed at Washington State University (WSU), Pullman WA, to study thermal-death kinetics of codling moth .…”

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confidence: 99%

Thermal-death kinetics of fifth-instar Amyelois transitella (Walker) (Lepidoptera: Pyralidae)

Wang

Tang

Johnson

et al. 2002

Journal of Stored Products Research

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Information on kinetics for thermal mortality of navel orangeworm, Amyelois transitella (Walker) (Lepidoptera: Pyralidae), is needed for developing post-harvest phytosanitation thermal treatments of walnuts. Thermal-death kinetics for fifth-instar navel orangeworms were determined at temperatures between 461C and 541C at a heating rate of 181C min À1 using a heating block system. Thermal-death curves for fifth-instar navel orangeworms followed a 0.5th-order of kinetic reaction. The time required to achieve 100% mortality (N 0 ¼ 600) decreased with increasing temperature in a logarithmic manner. Complete kill of 600 insects required a minimum exposure time of 140, 50, 15, 6, and 1 min at 461C, 481C, 501C, 521C, and 541C, respectively. The reaction rate (k) was affected by treatment temperatures following an Arrhenius relationship. The activation energy for thermal kill of fifth-instar navel orangeworms was estimated to be between 510 and 520 kJ mol À1 . r

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Thermal conditioning in Bactrocera tryoni eggs (Diptera: Tephritidae) following hot-water immersion

Cited by 29 publications

References 21 publications

Current Trends in Quarantine Entomology

Current Trends in Quarantine Entomology

Thermal death kinetics and heating rate effects for fifth-instar Cydia pomonella (L.) (Lepidoptera: Tortricidae)

Thermal-death kinetics of fifth-instar Amyelois transitella (Walker) (Lepidoptera: Pyralidae)

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