The relationship between age,acclimatization temperature,and heat death point in adult Calliphora erythrocephala

The heat resistance of adult Calliphora erythrocephala declines after eclosion and its rate of loss is dependent upon the temperature at which the adult is maintained. At 29°C the decline was complete in 5 days; at 24, 19, and 15°C it was complete in 10 days; at 10°C it was complete in 30 days; and at 5°C it was not complete even after 73 days. Physiological acclimatization in the adult stage was only observed at temperatures above 32°C, when an increase in heat resistance was superimposed upon the age-dependent decline.