Density-dependent perception of triatomine bug bites

Abstract

Pots containing different densities of Rhodnius prolixus were strapped on to the upper and lower arms and legs of six human volunteers. Analysis of the volunteers' perception of the bugs' probing activity showed a clear linear trend of perception according to bug density. Comparison with other results suggests that in humans as well as other vertebrate hosts, density dependent irritation from the bug bites and consequent disturbance and interruption of bugs' feeding could provide the mechanism by which bug development and population density is normally regulated.