Activity levels of female Triatoma infestans change depending on physiological condition
Abstract 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...
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| Format: | Article |
| Language: | English |
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BMC
2018-10-01
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| Series: | Parasites & Vectors |
| Subjects: | |
| Online Access: | http://link.springer.com/article/10.1186/s13071-018-3117-9 |
| _version_ | 1819060220709568512 |
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| author | Luciana Abrahan Pablo Lopez Ivana Amelotti María José Cavallo Raúl Stariolo Silvia Catalá Gerardo Cueto Verónica Valentinuzzi |
| author_facet | Luciana Abrahan Pablo Lopez Ivana Amelotti María José Cavallo Raúl Stariolo Silvia Catalá Gerardo Cueto Verónica Valentinuzzi |
| author_sort | Luciana Abrahan |
| collection | DOAJ |
| description | Abstract 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. |
| first_indexed | 2024-12-21T14:23:32Z |
| format | Article |
| id | doaj.art-ea317d0c34094ad3b61cca619d35362c |
| institution | Directory Open Access Journal |
| issn | 1756-3305 |
| language | English |
| last_indexed | 2024-12-21T14:23:32Z |
| publishDate | 2018-10-01 |
| publisher | BMC |
| record_format | Article |
| series | Parasites & Vectors |
| spelling | doaj.art-ea317d0c34094ad3b61cca619d35362c2022-12-21T19:00:43ZengBMCParasites & Vectors1756-33052018-10-011111710.1186/s13071-018-3117-9Activity levels of female Triatoma infestans change depending on physiological conditionLuciana Abrahan0Pablo Lopez1Ivana Amelotti2María José Cavallo3Raúl Stariolo4Silvia Catalá5Gerardo Cueto6Verónica Valentinuzzi7Centro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR), UNLAR, SEGEMAR, UNCa, CONICETCentro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR), UNLAR, SEGEMAR, UNCa, CONICETCentro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR), UNLAR, SEGEMAR, UNCa, CONICETCentro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR), UNLAR, SEGEMAR, UNCa, CONICETCentro de Referencia de VectoresCentro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR), UNLAR, SEGEMAR, UNCa, CONICETInstituto de Ecología, Genética y Evolución de Buenos AiresCentro Regional de Investigaciones Científicas y Transferencia Tecnológica de La Rioja (CRILAR), UNLAR, SEGEMAR, UNCa, CONICETAbstract 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.http://link.springer.com/article/10.1186/s13071-018-3117-9TriatominesKissing bugsChagas diseaseActive dispersal |
| spellingShingle | Luciana Abrahan Pablo Lopez Ivana Amelotti María José Cavallo Raúl Stariolo Silvia Catalá Gerardo Cueto Verónica Valentinuzzi Activity levels of female Triatoma infestans change depending on physiological condition Parasites & Vectors Triatomines Kissing bugs Chagas disease Active dispersal |
| title | 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_short | Activity levels of female Triatoma infestans change depending on physiological condition |
| title_sort | activity levels of female triatoma infestans change depending on physiological condition |
| topic | Triatomines Kissing bugs Chagas disease Active dispersal |
| url | http://link.springer.com/article/10.1186/s13071-018-3117-9 |
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