Thermoregulation

Obelisk posture

The adult odonate has to keep its body temperature within a particular range, largely independent of the ambient temperature to maintain activity. Perchers (species that spend most of their time perching and make only short flights) thermoregulate primarily by postural adjustments to sunlight. The obelisk posture made by some species is an excellent example for this, where the insect points its abdomen vertically towards the sun. When the temperature is down, they may bask at a warm or reflective substrate to receive warmth from the surface. Fliers (species that fly continuously) are capable of endothermic heat regulation during flight. They control the body temperature through adjustment of metabolic heat production or by altering haemolymph circulation between thorax and abdomen. Apart from these mechanisms, there exist other strategies also for heat regulation like reversible color change, adaptive activity patterns, microhabitat selection, etc.