Dependence of Flight on Temperature Regulation in the Moth, Manduca Sexta

Abstract

1. Manduca sexta can behaviourally regulate its temperature, but the temperature level is not determined by a simple thermal set-point. 2. Thermoregulation is not localized in a cephalic nervous centre. 3. Both of these characteristics distinguish thermoregulation in M. sexta from thermoregulation as seen in vertebrates. 4. Sustained high temperature is a requisite for flight activity, but regulation of internal temperature is a secondary feature in M. sexta infserving efficient tuning of the flight system.