Quarantine Disinfestation of Lemons Against Bactrocera tryoni and Ceratitis capitata (Diptera: Tephritidae) Using Cold Storage

Abstract

‘Eureka’ and ‘Lisbon’ lemons were artificially infested with immature life stages of Queensland fruit fly, Bactrocera tryoni (= Dacus tryoni Froggatt), or Mediterranean fruit fly, Ceratitis capitata (Wiedemann), and stored at 1 ± 0.2°C. Dose-mortality data from infested fruit held in cold storage for up to 14 d showed that first-instar B. tryoni and second-instar C. capitata were the life stages most tolerant of cold. From >43,000 B. tryoni first ins tars and >30,000 C. capitata second instars, none survived to pupation after storage at 1°C for 14 d. Storage of Iemons at 1°C for up to 32 d had no adverse effects on fruit quality.