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Circadian entrainment by light and host in the Chagas disease vector, Triatoma infestans

Valentinuzzi, Verónica Sandra et al · Taylor & Francis · 2013

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Author / responsible party
Valentinuzzi, Verónica Sandra et al
Publisher
Taylor & Francis
Year
2013
ISSN
0742-0528
ISSN
0742-0528
Language
English

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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. Fil: Valentinuzzi, Verónica Sandra. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Secretaría de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina Fil: Amelotti, Ivana. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Universidad Nacional de Catamarca. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Secretaría de Industria y Minería. Servicio Geológico Minero Argentino. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja. - Provincia de La Rioja. Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja; Argentina

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APA 7

Valentinuzzi, V. S. E. A. (2013). Circadian entrainment by light and host in the Chagas disease vector, Triatoma infestans. http://hdl.handle.net/11336/148429

MLA

Valentinuzzi, Verónica Sandra et al. "Circadian entrainment by light and host in the Chagas disease vector, Triatoma infestans." 2013. http://hdl.handle.net/11336/148429.

Chicago

Valentinuzzi, Verónica Sandra et al. 2013. "Circadian entrainment by light and host in the Chagas disease vector, Triatoma infestans.". http://hdl.handle.net/11336/148429.

Harvard

Valentinuzzi, V. S. E. A. 2013, Circadian entrainment by light and host in the Chagas disease vector, Triatoma infestans, Taylor & Francis, available at: http://hdl.handle.net/11336/148429 [Accessed 10 Aug. 2026].

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Title
Circadian entrainment by light and host in the Chagas disease vector, Triatoma infestans
Author / contributors
Valentinuzzi, Verónica Sandra et al
Publisher
Taylor & Francis
Publication year
2013
ISSN
0742-0528
ISSN
0742-0528
Language
English

Subjects

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CIRCADIAN RHYTHMS; KISSING BUGS; NONPHOTIC SYNCHRONIZATION; PHOTIC SYNCHRONIZATION; TRIATOMA INFESTANS; TRIATOMINAE; https://purl.org/becyt/ford/1.6; https://purl.org/becyt/ford/1
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