Abstract
The tolerances of all fruit-infesting stages of the Queensland fruit fly Bactrocera tryoni (Froggatt) to vapor heat treatment were determined to find the most tolerant stage. A series of doses (fruit core temperatures hom 39 to 46°C) of vapor heat treahnent was applied to ‘Kensington’ mangoes infested with eggs or one of the three larval instal’s of B. tryoni . Probit analysis of the resulting mortality showed that the stages most tolerant to heat were eggs and third instal’s. Quarantine disinfestation protocols should be based on one or both of these stages.
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