Activity levels of female Triatoma infestans change depending on physiological condition
Background: Triatoma infestans (Hemiptera: Reduviidae) is the main vector of Trypanosoma cruzi, the etiological agent of Chagas disease, in South America. Active dispersal of this vector is the principal cause of recolonization of human dwellings previously treated with insecticides. Due to the pers...
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2018
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17563305_v11_n1_p_Abrahan http://hdl.handle.net/20.500.12110/paper_17563305_v11_n1_p_Abrahan |
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paper:paper_17563305_v11_n1_p_Abrahan2023-06-08T16:28:52Z Activity levels of female Triatoma infestans change depending on physiological condition Active dispersal Chagas disease Kissing bugs Triatomines animal animal dispersal animal food Chagas disease chicken ecosystem female insect vector nymph physiology population dynamics reproduction transmission Triatoma Trypanosoma cruzi Animal Distribution Animal Nutritional Physiological Phenomena Animals Chagas Disease Chickens Ecosystem Female Insect Vectors Nymph Population Dynamics Reproduction Triatoma Trypanosoma cruzi Background: Triatoma infestans (Hemiptera: Reduviidae) is the main vector of Trypanosoma cruzi, the etiological agent of Chagas disease, in South America. Active dispersal of this vector is the principal cause of recolonization of human dwellings previously treated with insecticides. Due to the persistence of vector populations and their movement between habitats, dispersive behavior studies are important for understanding the epidemiology of Chagas disease. The aim of this study was to analyze the relationship among T. infestans females' activity levels according to their physiological conditions. Results: Two groups of insects were used, unfed and fed females. Each was composed of three subgroups in relation to the reproductive state: fifth-stage nymphs, virgin and fertilized females. There was a significant interaction between reproductive and nutritional states among T. infestans female' activity levels. During the experiments, unfed and fed nymphs remained inactive. Virgin females showed a dual behavior in their movement; fasted insects were more active. Fertilized females, both fed and unfed, were always active. Conclusion: The reproductive and nutritional conditions of T. infestans females affect their activity levels. When females with different reproductive states remained together, fertilized females showed permanent activity levels, suggesting that this subgroup of females represents the highest epidemiological risk as colonizers of human dwellings. © 2018 The Author(s). 2018 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17563305_v11_n1_p_Abrahan http://hdl.handle.net/20.500.12110/paper_17563305_v11_n1_p_Abrahan |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Active dispersal Chagas disease Kissing bugs Triatomines animal animal dispersal animal food Chagas disease chicken ecosystem female insect vector nymph physiology population dynamics reproduction transmission Triatoma Trypanosoma cruzi Animal Distribution Animal Nutritional Physiological Phenomena Animals Chagas Disease Chickens Ecosystem Female Insect Vectors Nymph Population Dynamics Reproduction Triatoma Trypanosoma cruzi |
| spellingShingle |
Active dispersal Chagas disease Kissing bugs Triatomines animal animal dispersal animal food Chagas disease chicken ecosystem female insect vector nymph physiology population dynamics reproduction transmission Triatoma Trypanosoma cruzi Animal Distribution Animal Nutritional Physiological Phenomena Animals Chagas Disease Chickens Ecosystem Female Insect Vectors Nymph Population Dynamics Reproduction Triatoma Trypanosoma cruzi Activity levels of female Triatoma infestans change depending on physiological condition |
| topic_facet |
Active dispersal Chagas disease Kissing bugs Triatomines animal animal dispersal animal food Chagas disease chicken ecosystem female insect vector nymph physiology population dynamics reproduction transmission Triatoma Trypanosoma cruzi Animal Distribution Animal Nutritional Physiological Phenomena Animals Chagas Disease Chickens Ecosystem Female Insect Vectors Nymph Population Dynamics Reproduction Triatoma Trypanosoma cruzi |
| description |
Background: Triatoma infestans (Hemiptera: Reduviidae) is the main vector of Trypanosoma cruzi, the etiological agent of Chagas disease, in South America. Active dispersal of this vector is the principal cause of recolonization of human dwellings previously treated with insecticides. Due to the persistence of vector populations and their movement between habitats, dispersive behavior studies are important for understanding the epidemiology of Chagas disease. The aim of this study was to analyze the relationship among T. infestans females' activity levels according to their physiological conditions. Results: Two groups of insects were used, unfed and fed females. Each was composed of three subgroups in relation to the reproductive state: fifth-stage nymphs, virgin and fertilized females. There was a significant interaction between reproductive and nutritional states among T. infestans female' activity levels. During the experiments, unfed and fed nymphs remained inactive. Virgin females showed a dual behavior in their movement; fasted insects were more active. Fertilized females, both fed and unfed, were always active. Conclusion: The reproductive and nutritional conditions of T. infestans females affect their activity levels. When females with different reproductive states remained together, fertilized females showed permanent activity levels, suggesting that this subgroup of females represents the highest epidemiological risk as colonizers of human dwellings. © 2018 The Author(s). |
| title |
Activity levels of female Triatoma infestans change depending on physiological condition |
| title_short |
Activity levels of female Triatoma infestans change depending on physiological condition |
| title_full |
Activity levels of female Triatoma infestans change depending on physiological condition |
| title_fullStr |
Activity levels of female Triatoma infestans change depending on physiological condition |
| title_full_unstemmed |
Activity levels of female Triatoma infestans change depending on physiological condition |
| title_sort |
activity levels of female triatoma infestans change depending on physiological condition |
| publishDate |
2018 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_17563305_v11_n1_p_Abrahan http://hdl.handle.net/20.500.12110/paper_17563305_v11_n1_p_Abrahan |
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1768544153384255488 |