The behavioural response of
Triatoma pseudomaculata
to chemical substances present in their faeces or cuticle (footprints) was
analyzed. Groups of larvae were simultaneously exposed to a clean filter
paper and to another paper impregnated with a chemical stimulus in a circular
arena. In these choice experiments, the insects aggregated significantly
around papers impregnated with dry faeces. In addition, the bugs also showed
a significant aggregation response to papers impregnated with compounds
derived from their cuticle that were deposited by contact on the substrate.
These results indicate that chemical compounds that affect the behaviour
of
T. pseudomaculata
are present in the faeces and in the cuticle of this species. Results are
discussed in relation to chemical communication in the Triatominae, as well
as to the potential use of these substances in traps or sensors for the
detection of this species.
