Relative tolerance to vapor heat treatment of eggs and larvae of Bactrocera tryoni (Diptera: Tephritidae) in mangoes.
Heard T. A., Heather N. W., Peterson P. M.
Author Affiliation: Entomology Branch, Queensland Department of Primary Industries, Indooroopilly, Qld. 4068, Australia.
Journal of Economic Entomology 85 : 461-463
Abstract : The tolerances of all fruit-infesting stages of Bactrocera tryoni to vapour heat treatment were determined to find the most tolerant stage. A series of doses (fruit core temperatures from 39 to 45°C) of vapour heat treatment was applied to 'Kensington' mangoes infested with eggs or 1 of 3 larval instars of B. tryoni. Probit analysis of the resulting mortality showed that the stages most tolerant to heat were eggs and 3rd-instar larvae. Quarantine disinfestation protocols should be based on 1 or both of these stages.