author(s)
Rashmi MA, Abraham Verghese, Rami Reddy PV, Subhash Kandakoor and Chakravarthy AK

abstract
Effect of temperature was studied at six constant temperatures i.e. 16, 20, 24, 28, 32 and 36°C and for four generations. The duration of different developmental stages of Bactrocera dorsalis varied as a function of temperature. The developmental time from egg to adult was inversely proportional to temperature. The total duration from egg to adult emergence varied from 96 days to 14 days at 16 to 36°C respectively. Temperatures less than 16°C and more than 36°C were detrimental to adults as they not survive at 36°C while at 16°C though adults survived they failed to oviposit. There is a tendency for fruit flies to shift to newer niches of cooler climes that will record a rise in the fruit flies infestation on crops. The fruit flies were not drastically affected up to 570 ppm and so with excess CO₂ no mitigation is warranted but the larvae developed faster with short duration in 380 ppm and 570ppm and there was a change in calling behaviour of either sex due to which the circadian rhythm with respect to time of mating was altered.