Most Auchenorrhyncha species appear to regulate their body temperature behaviorally, by seeking out microhabitats in which the ambient temperature remains within a narrow range and moving among alternate microhabitats as conditions change. In some cicadas, physiological mechanisms are also involved. Some species are facultatively endothermic, producing metabolic heat to facilitate calling, courtship, and other activities. This is usually accomplished by vibrating the flight or tymbal muscles until the body temperature rises to an optimal level. Some desert cicadas cool themselves by evaporation of excess water released through pores on the thorax and abdomen. In this way they are able to remain active at ambient temperatures that would kill other insects.

0 0

Post a comment