Hot-air quarantine treatment for mango infested with Caribbean Fruit fly (Diptera: Tephritidae)
1992
Sharp, J.L.
A single-stage forced-air quarantine treatment at 48 +/- 0.3 degrees C was developed to disinfest Florida-grown "Tommy Atkins" and "Keitt" mangoes, Mangifera indica L., of Caribbean fruit fly, Anastrepha suspensa (Loew), eggs and larvae. Treating infested fruits for 30-150 min with 48 +/- 0.3 degrees C forced air at a 0.75 m(3)/s mean air flow rate reduced the number of surviving pupae that developed from treated eggs and larvae. Probit analysis of the data estimated that a mean treatment time of 136.7 min was needed to reach 99.9968% (probit 9) mortality when the mean +/- SEM temperature next to the seed surface was 44.5 +/- 0.5 degrees C. A large-scale confirmatory test resulted in no survivors (based on puparia of normal appearance) when an estimated 106,053 A. suspensa larvae in 7,000 infested mangoes were heated with 48 +/- 0.3 degrees C forced air at an average 0.75 m(3)/s air flow rate for 160 or 220 min and the fruit pulp temperatures next to the seeds were 46.1 +/- 0.4 or 46.5 +/- 0.2 degrees C, respectively.
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