1921
Volume 87, Issue 1
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645

Abstract

Abstract.

and are relevant Chagas disease vectors. An apparent segregation among these triatomine species inside human households was suggested to rely on mutual repellence between them. However, and show aggregation responses to chemical signals emitted by the other species. These findings do not rule out the possibility that stimuli other than chemical signals could mediate repellence when these species exploit shelters simultaneously. In the present study, we investigated how and exploit shelters in controlled laboratory conditions and how insect density and environmental illumination modulate this behavior. We evaluated whether these species aggregate inside shelters or mutually repel each other. and show specific patterns of shelter exploitation, which are differentially affected by insect density and environment illumination. In particular, is more sensitive to insect density than , whereas shows higher sensitivity to illumination than Nevertheless, these species exploit shelters randomly without any apparent repellence.

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  • Received : 23 Mar 2011
  • Accepted : 01 Dec 2011

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