Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern

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Triatominae bugs remain quiet during the day, when they can be usually found assembled in protected sites, becoming active at night. By means of olfactometers and in different experimental arenas, we studied in the laboratory the response of Triatoma infestans (Klug) to volatiles present in their fa...

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Autores principales:	Lorenzo Figueiras, A.N., Kenigsten, A., Lazzari, C.R.
Formato:	JOUR
Materias:	Aggregation Chagas' disease Pheromones Triatoma aggregation pheromone South America Triatoma infestans
Acceso en línea:	http://hdl.handle.net/20.500.12110/paper_00221910_v40_n4_p311_LorenzoFigueiras
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	todo:paper_00221910_v40_n4_p311_LorenzoFigueiras
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spelling	todo:paper_00221910_v40_n4_p311_LorenzoFigueiras2023-10-03T14:28:10Z Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern Lorenzo Figueiras, A.N. Kenigsten, A. Lazzari, C.R. Aggregation Chagas' disease Pheromones Triatoma aggregation Chagas' disease pheromone South America Triatoma infestans Triatominae bugs remain quiet during the day, when they can be usually found assembled in protected sites, becoming active at night. By means of olfactometers and in different experimental arenas, we studied in the laboratory the response of Triatoma infestans (Klug) to volatiles present in their faeces and the dynamics of the aggregation behaviour. In a choice arena, nymphs showed a significant tendency to aggregate around papers impregnated with dry faeces. In a simultaneous discrimination olfactometer, and air current passed by a paper impregnated with dry faeces also elicited a significant attraction. Freshly deposited faeces did not elicit attraction, but rather a significant rejection was observed. Immediately after feeding, insects did not prefer impregnated papers and were randomly distributed in the arena. The change in the response from indifference to attraction takes place within the first 24 h after feeding. Finally, a spontaneous daily rhythm of aggregation/dispersion was demonstrated from the 6th day after feeding onwards. Maxima of assembling and dispersion occur at the onset of the photophase and scotophase, respectively. © 1994. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00221910_v40_n4_p311_LorenzoFigueiras
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Aggregation Chagas' disease Pheromones Triatoma aggregation Chagas' disease pheromone South America Triatoma infestans
spellingShingle	Aggregation Chagas' disease Pheromones Triatoma aggregation Chagas' disease pheromone South America Triatoma infestans Lorenzo Figueiras, A.N. Kenigsten, A. Lazzari, C.R. Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern
topic_facet	Aggregation Chagas' disease Pheromones Triatoma aggregation Chagas' disease pheromone South America Triatoma infestans
description	Triatominae bugs remain quiet during the day, when they can be usually found assembled in protected sites, becoming active at night. By means of olfactometers and in different experimental arenas, we studied in the laboratory the response of Triatoma infestans (Klug) to volatiles present in their faeces and the dynamics of the aggregation behaviour. In a choice arena, nymphs showed a significant tendency to aggregate around papers impregnated with dry faeces. In a simultaneous discrimination olfactometer, and air current passed by a paper impregnated with dry faeces also elicited a significant attraction. Freshly deposited faeces did not elicit attraction, but rather a significant rejection was observed. Immediately after feeding, insects did not prefer impregnated papers and were randomly distributed in the arena. The change in the response from indifference to attraction takes place within the first 24 h after feeding. Finally, a spontaneous daily rhythm of aggregation/dispersion was demonstrated from the 6th day after feeding onwards. Maxima of assembling and dispersion occur at the onset of the photophase and scotophase, respectively. © 1994.
format	JOUR
author	Lorenzo Figueiras, A.N. Kenigsten, A. Lazzari, C.R.
author_facet	Lorenzo Figueiras, A.N. Kenigsten, A. Lazzari, C.R.
author_sort	Lorenzo Figueiras, A.N.
title	Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern
title_short	Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern
title_full	Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern
title_fullStr	Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern
title_full_unstemmed	Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern
title_sort	aggregation in the haematophagous bug triatoma infestans: chemical signals and temporal pattern
url	http://hdl.handle.net/20.500.12110/paper_00221910_v40_n4_p311_LorenzoFigueiras
work_keys_str_mv	AT lorenzofigueirasan aggregationinthehaematophagousbugtriatomainfestanschemicalsignalsandtemporalpattern AT kenigstena aggregationinthehaematophagousbugtriatomainfestanschemicalsignalsandtemporalpattern AT lazzaricr aggregationinthehaematophagousbugtriatomainfestanschemicalsignalsandtemporalpattern
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Aggregation in the haematophagous bug Triatoma infestans: Chemical signals and temporal pattern

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