Abstract
We describe a new technique for rapidly measuring the heat or cold resistance of many small insects. We heat (or cool) insects in a temperature-controlled column and measure the temperature at which they are knocked down. An artificial selection experiment on heat resistance demonstrates that knockdown temperatures respond rapidly to selection. After only four generations of selection, the experimental and control lines differed significantly in both knockdown temperature and physiological heat tolerance, as measured by per cent survival of a heat shock. 3. Potential applications (acclimation, ageing, selection) and technical problems (body size, humidity, statistical considerations) are evaluated
Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
