The mutual exchange of regurgitated liquids between adult social insects or between them and their larvae.
- Direct interactions are the ‘obvious’ interactions: antennation, trophallaxis (food or liquid exchange), mandibular contact, visual contact, chemical contact (the odor of nearby nestmates), etc.
- Second, we quantified the rate of trophallaxis, that is, oral exchange of liquid food between individuals.
- Typical nest behaviors, such as aggression and trophallaxis, were not observed among aggregating wasps.
Early 20th century: from tropho- 'nourishment' + Greek allaxis 'exchange'.
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