part_of host seeking activation Activation is the first response to host cues; it is the initial response in a sequence of behaviours that ends with arrival at the host. IDOMAL:0002022 IDOMAL:0002022 Mosquitoes can be activated by host cues at any time. Un-fed, resting females of some species will attack at any hour if disturbed in their shelters by intrusion of a host or stimulated by odour from a nearby host. Such opportunistic biting has been observed in nocturnal mosquitoes disturbed by day. The activation step is readily observed in the laboratory but has seldom been described from the field. idomal_namespace adult behavioural process