The effect of controlled atmospheres at high temperatures on the mortality of Anastrepha ludens and A. oblique and on mango fruit quality
E.M. Yahia and D. Ortega
Proceedings of 26th International Horticultural Congress. Volume of Abstract . Toronto, Canada, 11-17 August, 2002. Abstract S09-P-88. pp. 247.
2002
บทคัดย่อ
The in vitro and in vivo (artificially and naturally infested in mango fruit) mortal ity of defferent stages (eggs, first and third instar larvae) of Anastrepha ludens and A. obliqua were determined after exposure to controlled atmospheres (O2 kPa O2 + 50 kPa CO2) at different temperatures (35-55 0C) and different exposure periods (80-240 minutes). Controlled atmospheres (CA) at>40 0C for > 160 minutes increased insect mortality. The in vivo mortality was more rapid than the in vitro mortality. Eggs were more tolerant than larval stages. A obliqua is slightly more tolerant than A. ludens. The mean estimated temperatures for 50%, 99% and 99.9968% of the in vitro mortality (LT50s, LT99s, LT99.9968s) of eggs of A. obliqua exposed to 0kPa O2 +50kPa CO2 at 51, 54 and 55 0C for 240 minutes were 49.4, 54.8 and 60.9 0C, respectively. ‘Manila mango fruit can tolerate there CA treatments at <44 0C for 160-240 minutes, but fruit becomes injured at hither temperatures.