Chemical communication in chagas disease vectors. Source, identity, and potential function of volatiles released by the metasternal and Brindley's glands of Triatoma infestans adults
Compounds from the metasternal and Brindley's glands of the blood-sucking bug, Triatoma infestans, were identified by solid phase microextraction (SPME) and gas chromatography-mass spectrometry. Volatile compounds released by adult bugs during copulation or after mechanical disturbance were als...
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todo:paper_00980331_v32_n9_p2035_Manrique2023-10-03T14:56:53Z Chemical communication in chagas disease vectors. Source, identity, and potential function of volatiles released by the metasternal and Brindley's glands of Triatoma infestans adults Manrique, G. Vitta, A.C.R. Ferreira, R.A. Zani, C.L. Unelius, C.R. Lazzari, C.R. Diotaiuti, L. Lorenzo, M.G. Alarm pheromone Brindley's gland Chagas disease Chemical communication Male aggregation pheromone Metasternal gland SPME Triatominae insect attractants pheromone acid alcohol chemical cue copulation disease vector ester gas chromatography hemophagy insect ketone mass spectrometry physical disturbance volatile substance animal animal behavior article bioassay Chagas disease chemistry copulation disease carrier female male mass fragmentography metabolism scent gland Triatoma volatilization Animals Behavior, Animal Biological Assay Chagas Disease Copulation Female Gas Chromatography-Mass Spectrometry Insect Vectors Male Pheromones Scent Glands Triatoma Volatilization Triatoma infestans Compounds from the metasternal and Brindley's glands of the blood-sucking bug, Triatoma infestans, were identified by solid phase microextraction (SPME) and gas chromatography-mass spectrometry. Volatile compounds released by adult bugs during copulation or after mechanical disturbance were also characterized. Six compounds were identified and found consistently in all samples from metasternal glands. The most abundant were 3-pentanone, 2-methylbutanol, 3-pentanol, and an unidentified compound. The metasternal gland blends did not differ qualitatively between sexes. Compounds found in Brindley's glands were short chain acids, alcohols, esters, and a ketone with no qualitative differences between sexes. Isobutyric acid was the main component of this blend, and two new confirmed compounds were described as products of these glands: 2-butanone and 2-methylbutyric acid. 3-Pentanone was collected from the headspace over 33% of the copulating pairs of T. infestans. Volatiles found in the headspace of disturbed T. infestans adults included short-chain fatty acids, alcohols, esters, and ketones, with no qualitative differences between sexes. Both types of glands apparently discharge their contents after disturbance. However, most of the volatiles released by bugs after disturbance came from Brindley's glands. The locomotor activity of fourth instars increased significantly after stimulation with the odors emitted by disturbed adults, as compared with larvae stimulated by the odor of undisturbed adults or by clean air. We also studied the directional behavioral response of fifth instars to the disturbance scent in a locomotion compensator. Larvae exposed to volatiles released by disturbed adults walked away from the direction of the odor. The results suggest that this blend or part of it functions as an alarm pheromone for T. infestans. We suggest that the metasternal glands of this species are involved both in the sexual and the alarm contexts, and that the Brindley's glands probably have both alarm and defensive roles. © Springer Science + Business Media, Inc. 2006. Fil:Manrique, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lazzari, C.R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Lorenzo, M.G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_00980331_v32_n9_p2035_Manrique |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Alarm pheromone Brindley's gland Chagas disease Chemical communication Male aggregation pheromone Metasternal gland SPME Triatominae insect attractants pheromone acid alcohol chemical cue copulation disease vector ester gas chromatography hemophagy insect ketone mass spectrometry physical disturbance volatile substance animal animal behavior article bioassay Chagas disease chemistry copulation disease carrier female male mass fragmentography metabolism scent gland Triatoma volatilization Animals Behavior, Animal Biological Assay Chagas Disease Copulation Female Gas Chromatography-Mass Spectrometry Insect Vectors Male Pheromones Scent Glands Triatoma Volatilization Triatoma infestans |
| spellingShingle |
Alarm pheromone Brindley's gland Chagas disease Chemical communication Male aggregation pheromone Metasternal gland SPME Triatominae insect attractants pheromone acid alcohol chemical cue copulation disease vector ester gas chromatography hemophagy insect ketone mass spectrometry physical disturbance volatile substance animal animal behavior article bioassay Chagas disease chemistry copulation disease carrier female male mass fragmentography metabolism scent gland Triatoma volatilization Animals Behavior, Animal Biological Assay Chagas Disease Copulation Female Gas Chromatography-Mass Spectrometry Insect Vectors Male Pheromones Scent Glands Triatoma Volatilization Triatoma infestans Manrique, G. Vitta, A.C.R. Ferreira, R.A. Zani, C.L. Unelius, C.R. Lazzari, C.R. Diotaiuti, L. Lorenzo, M.G. Chemical communication in chagas disease vectors. Source, identity, and potential function of volatiles released by the metasternal and Brindley's glands of Triatoma infestans adults |
| topic_facet |
Alarm pheromone Brindley's gland Chagas disease Chemical communication Male aggregation pheromone Metasternal gland SPME Triatominae insect attractants pheromone acid alcohol chemical cue copulation disease vector ester gas chromatography hemophagy insect ketone mass spectrometry physical disturbance volatile substance animal animal behavior article bioassay Chagas disease chemistry copulation disease carrier female male mass fragmentography metabolism scent gland Triatoma volatilization Animals Behavior, Animal Biological Assay Chagas Disease Copulation Female Gas Chromatography-Mass Spectrometry Insect Vectors Male Pheromones Scent Glands Triatoma Volatilization Triatoma infestans |
| description |
Compounds from the metasternal and Brindley's glands of the blood-sucking bug, Triatoma infestans, were identified by solid phase microextraction (SPME) and gas chromatography-mass spectrometry. Volatile compounds released by adult bugs during copulation or after mechanical disturbance were also characterized. Six compounds were identified and found consistently in all samples from metasternal glands. The most abundant were 3-pentanone, 2-methylbutanol, 3-pentanol, and an unidentified compound. The metasternal gland blends did not differ qualitatively between sexes. Compounds found in Brindley's glands were short chain acids, alcohols, esters, and a ketone with no qualitative differences between sexes. Isobutyric acid was the main component of this blend, and two new confirmed compounds were described as products of these glands: 2-butanone and 2-methylbutyric acid. 3-Pentanone was collected from the headspace over 33% of the copulating pairs of T. infestans. Volatiles found in the headspace of disturbed T. infestans adults included short-chain fatty acids, alcohols, esters, and ketones, with no qualitative differences between sexes. Both types of glands apparently discharge their contents after disturbance. However, most of the volatiles released by bugs after disturbance came from Brindley's glands. The locomotor activity of fourth instars increased significantly after stimulation with the odors emitted by disturbed adults, as compared with larvae stimulated by the odor of undisturbed adults or by clean air. We also studied the directional behavioral response of fifth instars to the disturbance scent in a locomotion compensator. Larvae exposed to volatiles released by disturbed adults walked away from the direction of the odor. The results suggest that this blend or part of it functions as an alarm pheromone for T. infestans. We suggest that the metasternal glands of this species are involved both in the sexual and the alarm contexts, and that the Brindley's glands probably have both alarm and defensive roles. © Springer Science + Business Media, Inc. 2006. |
| format |
JOUR |
| author |
Manrique, G. Vitta, A.C.R. Ferreira, R.A. Zani, C.L. Unelius, C.R. Lazzari, C.R. Diotaiuti, L. Lorenzo, M.G. |
| author_facet |
Manrique, G. Vitta, A.C.R. Ferreira, R.A. Zani, C.L. Unelius, C.R. Lazzari, C.R. Diotaiuti, L. Lorenzo, M.G. |
| author_sort |
Manrique, G. |
| title |
Chemical communication in chagas disease vectors. Source, identity, and potential function of volatiles released by the metasternal and Brindley's glands of Triatoma infestans adults |
| title_short |
Chemical communication in chagas disease vectors. Source, identity, and potential function of volatiles released by the metasternal and Brindley's glands of Triatoma infestans adults |
| title_full |
Chemical communication in chagas disease vectors. Source, identity, and potential function of volatiles released by the metasternal and Brindley's glands of Triatoma infestans adults |
| title_fullStr |
Chemical communication in chagas disease vectors. Source, identity, and potential function of volatiles released by the metasternal and Brindley's glands of Triatoma infestans adults |
| title_full_unstemmed |
Chemical communication in chagas disease vectors. Source, identity, and potential function of volatiles released by the metasternal and Brindley's glands of Triatoma infestans adults |
| title_sort |
chemical communication in chagas disease vectors. source, identity, and potential function of volatiles released by the metasternal and brindley's glands of triatoma infestans adults |
| url |
http://hdl.handle.net/20.500.12110/paper_00980331_v32_n9_p2035_Manrique |
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