Warm water treatment as a quarantine measure for fruitfly-infested mangoes.
Grové T., Steyn W. P., Beer M. S. de
Author Affiliation: Instituut vir Tropiese en Subtropiese Gewasse, Privaatsak X11208, Nelspruit 1200, South Africa.
Yearbook - South African Mango Growers' Association 18 : 23-25
Abstract : Warm water as a quarantine measure was assessed for the second and third instars of the Mediterranean (Ceratitis capitata) Natal (Ceratitis rosa) and Maroela (Ceratitis cosyra) fruit flies. Water at 46.1-46.7°C was used. Mango fruits containing larvae were exposed to hydro-heating for 20 to 70 minutes. The incidence of C capitata in the fruits was very low. The number of C. rosa larvae was much higher. 100% mortality of the larvae of both species occurred following hydro-heating for 70 minutes. The greatest numbers of larvae were found in fruits exposed to C. cosyra. Here, 98.68 % mortality occurred following hydro-heating of the fruits for 70 minutes. C. cosyra larvae were the most tolerant to the heat treatments applied.