Document Detail

Circadian entrainment by light and host in the Chagas disease vector, Triatoma infestans.
MedLine Citation:
PMID:  24156522     Owner:  NLM     Status:  Publisher    
Triatoma infestans (Reduviidae: Triatominae, "kissing bug") is the main insect vector of Trypanosoma cruzi, the causative agent of Chagas disease, a chronic trypanosomiasis infecting 10 million people world-wide. This hematophagous bug feeds on diurnal and nocturnal species during each host's quiescent time. As the hosts are also its major predators, kissing bugs are subjected to dual selective pressures from a single source. Therefore, synchronization of feeding with the host's behavior is critical to the insects' survival. We show that nonphotic signals linked to the host eclipse the role of light and dark as the primary circadian zeitgeber for these bugs, although light still strongly inhibits locomotor behavior directly. In nature, this combination provides the insect with great flexibility in organizing physiology and behavior: anticipating a quiescent host or avoiding its potential predation while remaining directly responsive to immediate environmental conditions. Manipulation of nonphotic entrainment could be a useful chronobiotic tool in the control of Chagas disease.
Verónica Sandra Valentinuzzi; Ivana Amelotti; David Eladio Gorla; Silvia Susana Catalá; Martin Roland Ralph
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2013-10-24
Journal Detail:
Title:  Chronobiology international     Volume:  -     ISSN:  1525-6073     ISO Abbreviation:  Chronobiol. Int.     Publication Date:  2013 Oct 
Date Detail:
Created Date:  2013-10-25     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8501362     Medline TA:  Chronobiol Int     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR-CONICET) , Anillaco, La Rioja , Argentina and.
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