Temperature Coupling in the Vocal Communication System of the Gray Tree Frog, Hyla versicolor.

The gray tree frog mates over a temperature range of at least 9 degrees C. Gravid females, tested at two different temperatures, preferred synthetic mating calls with temperature-dependent temporal properties similar to those produced by a male at about the same temperature as their own. Thus, the vocalization system and the temporal pattern recognition system are affected by temperature in a qualitatively similar fashion.