Volatile compounds emitted by Triatoma dimidiata, a vector of Chagas disease chemical analysis and behavioural evaluation
In this study, we evaluated the responses of Triatoma dimidiata Latreille (Hemiptera: Reduviidae) to volatiles emitted by conspecific females, males, mating pairs and metasternal gland (MG) extracts with a Y-tube olfactometer. The volatile compounds released by mating pairs and MGs of T. dimidiata were identified using solid-phase microextraction and coupled gas chromatography-mass spectrometry (GC-MS). Females were not attracted to volatiles emitted by males or MG extracts; however, they preferred clean air to their own volatiles or those from mating pairs. Males were attracted to volatiles emitted by males, females, mating pairs, pairs in which the male had the MG orifices occluded or MG extracts of both sexes. However, males were not attracted to volatiles emitted by pairs in which the female had the MG orifices occluded. The chemical analyses showed that 14 and 15 compounds were detected in the headspace of mating pairs and MG, respectively. Most of the compounds identified from MG except for isobutyric acid were also detected in the headspace of mating pairs. Both females and males were attracted to octanal and 6-methyl-5-hepten-2-one, and males were attracted to 3,5-dimethyl-2-hexanol. Males but not females were attracted to a seven-compound blend, formulated from compounds identified in attractive MG extracts.
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KOHA-OAI-ECOSUR:374362024-03-12T12:45:21ZVolatile compounds emitted by Triatoma dimidiata, a vector of Chagas disease chemical analysis and behavioural evaluation May Concha, Irving Jesús Doctor 15611 Rojas, Julio C. Doctor autor/a 5426 Cruz López, Leopoldo Caridad Doctor autor/a 2083 Millar, Jocelyn G. 1954- autor/a Ramsey Willoquet, Janine M. Doctora autor/a 14239 textengIn this study, we evaluated the responses of Triatoma dimidiata Latreille (Hemiptera: Reduviidae) to volatiles emitted by conspecific females, males, mating pairs and metasternal gland (MG) extracts with a Y-tube olfactometer. The volatile compounds released by mating pairs and MGs of T. dimidiata were identified using solid-phase microextraction and coupled gas chromatography-mass spectrometry (GC-MS). Females were not attracted to volatiles emitted by males or MG extracts; however, they preferred clean air to their own volatiles or those from mating pairs. Males were attracted to volatiles emitted by males, females, mating pairs, pairs in which the male had the MG orifices occluded or MG extracts of both sexes. However, males were not attracted to volatiles emitted by pairs in which the female had the MG orifices occluded. The chemical analyses showed that 14 and 15 compounds were detected in the headspace of mating pairs and MG, respectively. Most of the compounds identified from MG except for isobutyric acid were also detected in the headspace of mating pairs. Both females and males were attracted to octanal and 6-methyl-5-hepten-2-one, and males were attracted to 3,5-dimethyl-2-hexanol. Males but not females were attracted to a seven-compound blend, formulated from compounds identified in attractive MG extracts.In this study, we evaluated the responses of Triatoma dimidiata Latreille (Hemiptera: Reduviidae) to volatiles emitted by conspecific females, males, mating pairs and metasternal gland (MG) extracts with a Y-tube olfactometer. The volatile compounds released by mating pairs and MGs of T. dimidiata were identified using solid-phase microextraction and coupled gas chromatography-mass spectrometry (GC-MS). Females were not attracted to volatiles emitted by males or MG extracts; however, they preferred clean air to their own volatiles or those from mating pairs. Males were attracted to volatiles emitted by males, females, mating pairs, pairs in which the male had the MG orifices occluded or MG extracts of both sexes. However, males were not attracted to volatiles emitted by pairs in which the female had the MG orifices occluded. The chemical analyses showed that 14 and 15 compounds were detected in the headspace of mating pairs and MG, respectively. Most of the compounds identified from MG except for isobutyric acid were also detected in the headspace of mating pairs. Both females and males were attracted to octanal and 6-methyl-5-hepten-2-one, and males were attracted to 3,5-dimethyl-2-hexanol. Males but not females were attracted to a seven-compound blend, formulated from compounds identified in attractive MG extracts.Adobe Acrobat profesional 6.0 o superiorTriatoma dimidiataCompuestos volátilesEnfermedad de chagasDisponible en líneaMedical and Veterinary EntomologyDisponible para usuarios de ECOSUR con su clave de acceso |
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Triatoma dimidiata Compuestos volátiles Enfermedad de chagas Triatoma dimidiata Compuestos volátiles Enfermedad de chagas |
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Triatoma dimidiata Compuestos volátiles Enfermedad de chagas Triatoma dimidiata Compuestos volátiles Enfermedad de chagas May Concha, Irving Jesús Doctor 15611 Rojas, Julio C. Doctor autor/a 5426 Cruz López, Leopoldo Caridad Doctor autor/a 2083 Millar, Jocelyn G. 1954- autor/a Ramsey Willoquet, Janine M. Doctora autor/a 14239 Volatile compounds emitted by Triatoma dimidiata, a vector of Chagas disease chemical analysis and behavioural evaluation |
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In this study, we evaluated the responses of Triatoma dimidiata Latreille (Hemiptera: Reduviidae) to volatiles emitted by conspecific females, males, mating pairs and metasternal gland (MG) extracts with a Y-tube olfactometer. The volatile compounds released by mating pairs and MGs of T. dimidiata were identified using solid-phase microextraction and coupled gas chromatography-mass spectrometry (GC-MS). Females were not attracted to volatiles emitted by males or MG extracts; however, they preferred clean air to their own volatiles or those from mating pairs. Males were attracted to volatiles emitted by males, females, mating pairs, pairs in which the male had the MG orifices occluded or MG extracts of both sexes. However, males were not attracted to volatiles emitted by pairs in which the female had the MG orifices occluded. The chemical analyses showed that 14 and 15 compounds were detected in the headspace of mating pairs and MG, respectively. Most of the compounds identified from MG except for isobutyric acid were also detected in the headspace of mating pairs. Both females and males were attracted to octanal and 6-methyl-5-hepten-2-one, and males were attracted to 3,5-dimethyl-2-hexanol. Males but not females were attracted to a seven-compound blend, formulated from compounds identified in attractive MG extracts. |
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Triatoma dimidiata Compuestos volátiles Enfermedad de chagas |
author |
May Concha, Irving Jesús Doctor 15611 Rojas, Julio C. Doctor autor/a 5426 Cruz López, Leopoldo Caridad Doctor autor/a 2083 Millar, Jocelyn G. 1954- autor/a Ramsey Willoquet, Janine M. Doctora autor/a 14239 |
author_facet |
May Concha, Irving Jesús Doctor 15611 Rojas, Julio C. Doctor autor/a 5426 Cruz López, Leopoldo Caridad Doctor autor/a 2083 Millar, Jocelyn G. 1954- autor/a Ramsey Willoquet, Janine M. Doctora autor/a 14239 |
author_sort |
May Concha, Irving Jesús Doctor 15611 |
title |
Volatile compounds emitted by Triatoma dimidiata, a vector of Chagas disease chemical analysis and behavioural evaluation |
title_short |
Volatile compounds emitted by Triatoma dimidiata, a vector of Chagas disease chemical analysis and behavioural evaluation |
title_full |
Volatile compounds emitted by Triatoma dimidiata, a vector of Chagas disease chemical analysis and behavioural evaluation |
title_fullStr |
Volatile compounds emitted by Triatoma dimidiata, a vector of Chagas disease chemical analysis and behavioural evaluation |
title_full_unstemmed |
Volatile compounds emitted by Triatoma dimidiata, a vector of Chagas disease chemical analysis and behavioural evaluation |
title_sort |
volatile compounds emitted by triatoma dimidiata, a vector of chagas disease chemical analysis and behavioural evaluation |
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