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Abstract:

An empirical model of flight initiation coupled with data from a longitudinal study predicted that the flight dispersal of Triatoma infestans from peridomestic sites was more likely to occur in late summer. To partially test this prediction, we operated 11-12 black light traps from 1945 to 2200 hours in March 2003 in two villages in northern Argentina. All peridomestic sites around the light traps were later inspected to assess the relative abundance and nutritional status of T. infestans at each site. Traps were located 19-94 m from the nearest infested site. A total of 2 female, 10 male, and 3 fifth-instar nymphs of T. infestans; 4 adult Triatoma garciabesi; and 1 Triatoma guasayana fifth-instar nymph were collected in 64 trap nights. Nearly two-thirds of the bugs arrived to the traps during the first hour after sunset, when ambient temperatures were 22-28°C; 80% of adults were unfed. The number of T. infestans that flew to the traps was significantly and negatively associated with wind speed, and the number of males positively associated with the abundance of adult T. infestans in peridomestic sites within 200 m around each light trap. This is the first successful application of light traps for collecting dispersing nymphal and adult T. infestans on a village-wide scale. We attribute this success to the placement of traps with consideration to spatial infestation patterns and seasonal variation in nutritional status of peridomestic triatomine populations.

Registro:

Documento: Artículo
Título:Active dispersal of natural populations of Triatoma infestans (Hemiptera: Reduviidae) in rural northwestern Argentina
Autor:Vazquez-Prokopec, G.M.; Ceballos, L.A.; Kitron, U.; Gürtler, R.E.
Filiación:Lab. de Eco-Epidemiología, Depto. de Ecologia, Genet. y Evol., Ciudad Universitaria, C1428EHA, Buenos Aires, Argentina
College of Veterinary Medicine, University of Illinois at Urbana, Champaign, IL 61801, United States
Palabras clave:Chagas' disease; Flight; Light trap; Triatominae; Vector ecology; Animalia; Hemiptera; Reduviidae; Triatoma; Triatoma garciabesi; Triatoma garciabesi; Triatoma guasayana; Triatoma guasayana; Triatoma infestans; Triatoma infestans; Triatominae
Año:2004
Volumen:41
Número:4
Página de inicio:614
Página de fin:621
DOI: http://dx.doi.org/10.1603/0022-2585-41.4.614
Título revista:Journal of Medical Entomology
Título revista abreviado:J. Med. Entomol.
ISSN:00222585
CODEN:JMENA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00222585_v41_n4_p614_VazquezProkopec

Referencias:

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Citas:

---------- APA ----------
Vazquez-Prokopec, G.M., Ceballos, L.A., Kitron, U. & Gürtler, R.E. (2004) . Active dispersal of natural populations of Triatoma infestans (Hemiptera: Reduviidae) in rural northwestern Argentina. Journal of Medical Entomology, 41(4), 614-621.
http://dx.doi.org/10.1603/0022-2585-41.4.614
---------- CHICAGO ----------
Vazquez-Prokopec, G.M., Ceballos, L.A., Kitron, U., Gürtler, R.E. "Active dispersal of natural populations of Triatoma infestans (Hemiptera: Reduviidae) in rural northwestern Argentina" . Journal of Medical Entomology 41, no. 4 (2004) : 614-621.
http://dx.doi.org/10.1603/0022-2585-41.4.614
---------- MLA ----------
Vazquez-Prokopec, G.M., Ceballos, L.A., Kitron, U., Gürtler, R.E. "Active dispersal of natural populations of Triatoma infestans (Hemiptera: Reduviidae) in rural northwestern Argentina" . Journal of Medical Entomology, vol. 41, no. 4, 2004, pp. 614-621.
http://dx.doi.org/10.1603/0022-2585-41.4.614
---------- VANCOUVER ----------
Vazquez-Prokopec, G.M., Ceballos, L.A., Kitron, U., Gürtler, R.E. Active dispersal of natural populations of Triatoma infestans (Hemiptera: Reduviidae) in rural northwestern Argentina. J. Med. Entomol. 2004;41(4):614-621.
http://dx.doi.org/10.1603/0022-2585-41.4.614