Differences in competitive ability for the occupancy of shelters in triatomines
Triatomines (Hemiptera: Reduviidae: Triatominae) are nocturnal blood-sucking insects. During daylight hours they remain in an akinetic state inside their shelters, whereas at dusk they become active and move outside. When they are outside their shelters during the photophase, triatomines are vulnera...
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2017
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0269283X_v31_n3_p252_Zacharias http://hdl.handle.net/20.500.12110/paper_0269283X_v31_n3_p252_Zacharias |
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paper:paper_0269283X_v31_n3_p252_Zacharias2023-06-08T15:24:19Z Differences in competitive ability for the occupancy of shelters in triatomines Zacharias, Claudia Andrea Minoli, Sebastián A. Manrique, Gabriel Chagas' disease colonization competition Rhodnius prolixus shelter occupancy Triatoma infestans Triatoma sordida triatomines Chagas disease competitive ability insect interspecific interaction intraspecific variation nutritional status phosphatase predator recolonization shelter Hemiptera Hexapoda Reduviidae Rhodnius prolixus Triatoma infestans Triatoma sordida Triatominae animal competitive behavior feeding behavior growth, development and aging nymph physiology Rhodnius Triatoma Animals Competitive Behavior Feeding Behavior Nymph Rhodnius Triatoma Triatomines (Hemiptera: Reduviidae: Triatominae) are nocturnal blood-sucking insects. During daylight hours they remain in an akinetic state inside their shelters, whereas at dusk they become active and move outside. When they are outside their shelters during the photophase, triatomines are vulnerable to diurnal predators and the period just before dawn is critical to their survival. This work analyses the existence of competitive interactions involved in the occupancy of shelters by triatomines. Behavioural assays were performed in which nymphs of different stages, nutritional status or species were released in an experimental arena containing a space-limited artificial shelter. The proportions of individuals occupying the shelter during the photophase were quantified to estimate the competitive abilities of each stage and species. Intraspecific comparisons showed higher levels of shelter occupancy for fourth over fifth instars and fed over unfed nymphs of Triatoma infestans. Interspecific comparisons showed higher rates of shelter occupancy for Triatoma sordida in comparison with T. infestans, and for T. infestans over Rhodnius prolixus. Arrival order was also relevant to determining shelter occupancy levels: early arrival was advantageous in comparison with later arrival. The study of intra- and interspecific competitive interactions for shelter occupancy provides relevant information about colonization and recolonization processes in the natural environments of triatomines. © 2017 The Royal Entomological Society Fil:Zacharias, C.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Minoli, S.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Manrique, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2017 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0269283X_v31_n3_p252_Zacharias http://hdl.handle.net/20.500.12110/paper_0269283X_v31_n3_p252_Zacharias |
| 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 colonization competition Rhodnius prolixus shelter occupancy Triatoma infestans Triatoma sordida triatomines Chagas disease competitive ability insect interspecific interaction intraspecific variation nutritional status phosphatase predator recolonization shelter Hemiptera Hexapoda Reduviidae Rhodnius prolixus Triatoma infestans Triatoma sordida Triatominae animal competitive behavior feeding behavior growth, development and aging nymph physiology Rhodnius Triatoma Animals Competitive Behavior Feeding Behavior Nymph Rhodnius Triatoma |
| spellingShingle |
Chagas' disease colonization competition Rhodnius prolixus shelter occupancy Triatoma infestans Triatoma sordida triatomines Chagas disease competitive ability insect interspecific interaction intraspecific variation nutritional status phosphatase predator recolonization shelter Hemiptera Hexapoda Reduviidae Rhodnius prolixus Triatoma infestans Triatoma sordida Triatominae animal competitive behavior feeding behavior growth, development and aging nymph physiology Rhodnius Triatoma Animals Competitive Behavior Feeding Behavior Nymph Rhodnius Triatoma Zacharias, Claudia Andrea Minoli, Sebastián A. Manrique, Gabriel Differences in competitive ability for the occupancy of shelters in triatomines |
| topic_facet |
Chagas' disease colonization competition Rhodnius prolixus shelter occupancy Triatoma infestans Triatoma sordida triatomines Chagas disease competitive ability insect interspecific interaction intraspecific variation nutritional status phosphatase predator recolonization shelter Hemiptera Hexapoda Reduviidae Rhodnius prolixus Triatoma infestans Triatoma sordida Triatominae animal competitive behavior feeding behavior growth, development and aging nymph physiology Rhodnius Triatoma Animals Competitive Behavior Feeding Behavior Nymph Rhodnius Triatoma |
| description |
Triatomines (Hemiptera: Reduviidae: Triatominae) are nocturnal blood-sucking insects. During daylight hours they remain in an akinetic state inside their shelters, whereas at dusk they become active and move outside. When they are outside their shelters during the photophase, triatomines are vulnerable to diurnal predators and the period just before dawn is critical to their survival. This work analyses the existence of competitive interactions involved in the occupancy of shelters by triatomines. Behavioural assays were performed in which nymphs of different stages, nutritional status or species were released in an experimental arena containing a space-limited artificial shelter. The proportions of individuals occupying the shelter during the photophase were quantified to estimate the competitive abilities of each stage and species. Intraspecific comparisons showed higher levels of shelter occupancy for fourth over fifth instars and fed over unfed nymphs of Triatoma infestans. Interspecific comparisons showed higher rates of shelter occupancy for Triatoma sordida in comparison with T. infestans, and for T. infestans over Rhodnius prolixus. Arrival order was also relevant to determining shelter occupancy levels: early arrival was advantageous in comparison with later arrival. The study of intra- and interspecific competitive interactions for shelter occupancy provides relevant information about colonization and recolonization processes in the natural environments of triatomines. © 2017 The Royal Entomological Society |
| author |
Zacharias, Claudia Andrea Minoli, Sebastián A. Manrique, Gabriel |
| author_facet |
Zacharias, Claudia Andrea Minoli, Sebastián A. Manrique, Gabriel |
| author_sort |
Zacharias, Claudia Andrea |
| title |
Differences in competitive ability for the occupancy of shelters in triatomines |
| title_short |
Differences in competitive ability for the occupancy of shelters in triatomines |
| title_full |
Differences in competitive ability for the occupancy of shelters in triatomines |
| title_fullStr |
Differences in competitive ability for the occupancy of shelters in triatomines |
| title_full_unstemmed |
Differences in competitive ability for the occupancy of shelters in triatomines |
| title_sort |
differences in competitive ability for the occupancy of shelters in triatomines |
| publishDate |
2017 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_0269283X_v31_n3_p252_Zacharias http://hdl.handle.net/20.500.12110/paper_0269283X_v31_n3_p252_Zacharias |
| work_keys_str_mv |
AT zachariasclaudiaandrea differencesincompetitiveabilityfortheoccupancyofsheltersintriatomines AT minolisebastiana differencesincompetitiveabilityfortheoccupancyofsheltersintriatomines AT manriquegabriel differencesincompetitiveabilityfortheoccupancyofsheltersintriatomines |
| _version_ |
1768545326776451072 |