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Abstract:

Triatoma infestans, the main vector of Chagas disease in Southern Cone countries, frequently infests peridomestic structures housing domestic animals. A total of 814 T. infestans collected from 35 different peridomestic sites in rural northwestern Argentina over 1-4 consecutive seasons was examined for recent blood meals and nutritional status. Bugs from goat or pig corrals had lower qualitative nutritional status and mean weight to length ratios (W/L) than those captured in chicken coops. Males systematically had lower qualitative nutritional status and W/L than females. Using logistic multiple regression, the daily feeding rates of T. infestans were significantly associated with season and stage but not ecotope, whereas the proportion of well-fed bugs varied significantly with all three factors. The seasonal trends in feeding rates and nutritional status were consistent with the local availability and breeding timing of domestic animals. The observed data fed into an empirical model predicted that the probability of flight initiation would peak in summer from pig or goat corrals, not chicken coops, and be insignificant in all ecotopes in spring and fall. Male T. infestans outnumbered females as potential fliers. This is the first study conducted in well-defined habitat units that shows significant heterogeneities in the feeding rates and nutritional status of triatomine populations linked to host demographics and management, and how these affect flight dispersal potential over seasons. Peridomestic bug populations are of great relevance as a source of domestic reinfestation and for the elimination of T. infestans. © 2005 Elsevier B.V. All rights reserved.

Registro:

Documento: Artículo
Título:Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina
Autor:Ceballos, L.A.; Vazquez-Prokopec, G.M.; Cecere, M.C.; Marcet, P.L.; Gürtler, R.E.
Filiación:Laboratory of Eco-Epidemiology, Department of Ecology, Genetics and Evolution, University of Buenos Aires, 1428 Buenos Aires, Argentina
Palabras clave:Chagas disease; Feeding; Flight dispersal; Population dynamics; Triatoma infestans; Vector control; Chagas disease; disease vector; dispersal; feeding; nutritional status; animal housing; animal parasitosis; animal wellbeing; Argentina; article; breeding; disease carrier; experimental model; feeding; feeding behavior; female; flying; genetic heterogeneity; habitat quality; host parasite interaction; host selection; host susceptibility; infestation; life cycle; male; multivariate logistic regression analysis; nonhuman; nutritional status; organism group size; parasite control; population abundance; population movement pattern; rural area; seasonal variation; sex difference; statistical significance; Triatoma infestans; Animals; Argentina; Chickens; Feeding Behavior; Female; Goats; Housing, Animal; Logistic Models; Male; Seasons; Sex Factors; Swine; Triatoma; Argentina; South America; Western Hemisphere; World; Animalia; Capra hircus; Sus scrofa; Triatoma infestans
Año:2005
Volumen:95
Número:2
Página de inicio:149
Página de fin:159
DOI: http://dx.doi.org/10.1016/j.actatropica.2005.05.010
Título revista:Acta Tropica
Título revista abreviado:Acta Trop.
ISSN:0001706X
CODEN:ACTRA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0001706X_v95_n2_p149_Ceballos

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Citas:

---------- APA ----------
Ceballos, L.A., Vazquez-Prokopec, G.M., Cecere, M.C., Marcet, P.L. & Gürtler, R.E. (2005) . Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina. Acta Tropica, 95(2), 149-159.
http://dx.doi.org/10.1016/j.actatropica.2005.05.010
---------- CHICAGO ----------
Ceballos, L.A., Vazquez-Prokopec, G.M., Cecere, M.C., Marcet, P.L., Gürtler, R.E. "Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina" . Acta Tropica 95, no. 2 (2005) : 149-159.
http://dx.doi.org/10.1016/j.actatropica.2005.05.010
---------- MLA ----------
Ceballos, L.A., Vazquez-Prokopec, G.M., Cecere, M.C., Marcet, P.L., Gürtler, R.E. "Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina" . Acta Tropica, vol. 95, no. 2, 2005, pp. 149-159.
http://dx.doi.org/10.1016/j.actatropica.2005.05.010
---------- VANCOUVER ----------
Ceballos, L.A., Vazquez-Prokopec, G.M., Cecere, M.C., Marcet, P.L., Gürtler, R.E. Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina. Acta Trop. 2005;95(2):149-159.
http://dx.doi.org/10.1016/j.actatropica.2005.05.010