Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina
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...
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2005
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0001706X_v95_n2_p149_Ceballos http://hdl.handle.net/20.500.12110/paper_0001706X_v95_n2_p149_Ceballos |
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paper:paper_0001706X_v95_n2_p149_Ceballos2023-06-08T14:21:20Z Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina 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 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. 2005 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0001706X_v95_n2_p149_Ceballos http://hdl.handle.net/20.500.12110/paper_0001706X_v95_n2_p149_Ceballos |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
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 |
| spellingShingle |
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 Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina |
| topic_facet |
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 |
| description |
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. |
| title |
Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina |
| title_short |
Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina |
| title_full |
Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina |
| title_fullStr |
Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina |
| title_full_unstemmed |
Feeding rates, nutritional status and flight dispersal potential of peridomestic populations of Triatoma infestans in rural northwestern Argentina |
| title_sort |
feeding rates, nutritional status and flight dispersal potential of peridomestic populations of triatoma infestans in rural northwestern argentina |
| publishDate |
2005 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0001706X_v95_n2_p149_Ceballos http://hdl.handle.net/20.500.12110/paper_0001706X_v95_n2_p149_Ceballos |
| _version_ |
1768545073221337088 |