Using videography techniques Evans et al. examined the locomotor activity of Wolbachia infected Aedes aegypti relative to uninfected over several adult ages. Wolbachia infection caused slight increases in the activity of the mosquitoes both during day and night but did not disturb circadian rhythms. The infected mosquitoes also show slightly higher metabolic rates. One possible explanation is that the Wolbachia are causing a metabolic drain on the host and the mosquitoes are spending more time seeking sugar water.