Filling dynamics of the Brindley's glands in the blood-sucking bug Triatoma infestans (Hemiptera: Reduviidae)
The filling dynamics of exocrine defensive glands is an important component of the defensive capacity of an insect in its natural environment. We studied the filling state and reloading rate of the Brindley's glands in the haematophagous Chagas disease vector Triatoma infestans (Hemiptera: Redu...
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2014
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221910_v71_n_p122_Palottini http://hdl.handle.net/20.500.12110/paper_00221910_v71_n_p122_Palottini |
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paper:paper_00221910_v71_n_p122_Palottini2023-06-08T14:47:16Z Filling dynamics of the Brindley's glands in the blood-sucking bug Triatoma infestans (Hemiptera: Reduviidae) Manrique, Gabriel Alarm pheromone Brindley's glands Isobutyric acid Triatoma infestans blood carboxylic acid disease vector insect parasitic disease pheromone Hemiptera Reduviidae Triatoma infestans isobutyric acid isobutyric acid derivative pheromone animal exocrine gland feeding behavior growth, development and aging metabolism molting nymph physiology secretion (process) Triatoma Animals Exocrine Glands Feeding Behavior Isobutyrates Molting Nymph Pheromones Triatoma The filling dynamics of exocrine defensive glands is an important component of the defensive capacity of an insect in its natural environment. We studied the filling state and reloading rate of the Brindley's glands in the haematophagous Chagas disease vector Triatoma infestans (Hemiptera: Reduviidae). Quantitative analyses of isobutyric acid, the main secretion component, were carried out with glands dissected from adults under different scenarios of development, number of discharging events and feeding conditions. The alarm-pheromone function of the gland secretion was also assessed in bioassays with conspecific nymphs. Although pharate adults have their glands completely developed, these were not full until imaginal ecdysis. If kept undisturbed, the adults maintained a constant gland load, and discharged about 75% of the gland contents upon one disturbance event. While the glands can be discharged several times, full replenishing was not complete after one week, unless the insect had access to food. The escape behavior of nymphs in bioassays correlated with the chemical analyses, with nymphs showing significant avoidance only toward gland discharges from undisturbed or disturbed/fed adults. The results are discussed in reference to the feeding frequency and gregarious behavior of T. infestans under natural conditions, which suggest a relevant role of the filling dynamics of the Brindley's glands in the intraspecific communication of the insect. © 2014 Elsevier Ltd. Fil:Manrique, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2014 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221910_v71_n_p122_Palottini http://hdl.handle.net/20.500.12110/paper_00221910_v71_n_p122_Palottini |
| 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 glands Isobutyric acid Triatoma infestans blood carboxylic acid disease vector insect parasitic disease pheromone Hemiptera Reduviidae Triatoma infestans isobutyric acid isobutyric acid derivative pheromone animal exocrine gland feeding behavior growth, development and aging metabolism molting nymph physiology secretion (process) Triatoma Animals Exocrine Glands Feeding Behavior Isobutyrates Molting Nymph Pheromones Triatoma |
| spellingShingle |
Alarm pheromone Brindley's glands Isobutyric acid Triatoma infestans blood carboxylic acid disease vector insect parasitic disease pheromone Hemiptera Reduviidae Triatoma infestans isobutyric acid isobutyric acid derivative pheromone animal exocrine gland feeding behavior growth, development and aging metabolism molting nymph physiology secretion (process) Triatoma Animals Exocrine Glands Feeding Behavior Isobutyrates Molting Nymph Pheromones Triatoma Manrique, Gabriel Filling dynamics of the Brindley's glands in the blood-sucking bug Triatoma infestans (Hemiptera: Reduviidae) |
| topic_facet |
Alarm pheromone Brindley's glands Isobutyric acid Triatoma infestans blood carboxylic acid disease vector insect parasitic disease pheromone Hemiptera Reduviidae Triatoma infestans isobutyric acid isobutyric acid derivative pheromone animal exocrine gland feeding behavior growth, development and aging metabolism molting nymph physiology secretion (process) Triatoma Animals Exocrine Glands Feeding Behavior Isobutyrates Molting Nymph Pheromones Triatoma |
| description |
The filling dynamics of exocrine defensive glands is an important component of the defensive capacity of an insect in its natural environment. We studied the filling state and reloading rate of the Brindley's glands in the haematophagous Chagas disease vector Triatoma infestans (Hemiptera: Reduviidae). Quantitative analyses of isobutyric acid, the main secretion component, were carried out with glands dissected from adults under different scenarios of development, number of discharging events and feeding conditions. The alarm-pheromone function of the gland secretion was also assessed in bioassays with conspecific nymphs. Although pharate adults have their glands completely developed, these were not full until imaginal ecdysis. If kept undisturbed, the adults maintained a constant gland load, and discharged about 75% of the gland contents upon one disturbance event. While the glands can be discharged several times, full replenishing was not complete after one week, unless the insect had access to food. The escape behavior of nymphs in bioassays correlated with the chemical analyses, with nymphs showing significant avoidance only toward gland discharges from undisturbed or disturbed/fed adults. The results are discussed in reference to the feeding frequency and gregarious behavior of T. infestans under natural conditions, which suggest a relevant role of the filling dynamics of the Brindley's glands in the intraspecific communication of the insect. © 2014 Elsevier Ltd. |
| author |
Manrique, Gabriel |
| author_facet |
Manrique, Gabriel |
| author_sort |
Manrique, Gabriel |
| title |
Filling dynamics of the Brindley's glands in the blood-sucking bug Triatoma infestans (Hemiptera: Reduviidae) |
| title_short |
Filling dynamics of the Brindley's glands in the blood-sucking bug Triatoma infestans (Hemiptera: Reduviidae) |
| title_full |
Filling dynamics of the Brindley's glands in the blood-sucking bug Triatoma infestans (Hemiptera: Reduviidae) |
| title_fullStr |
Filling dynamics of the Brindley's glands in the blood-sucking bug Triatoma infestans (Hemiptera: Reduviidae) |
| title_full_unstemmed |
Filling dynamics of the Brindley's glands in the blood-sucking bug Triatoma infestans (Hemiptera: Reduviidae) |
| title_sort |
filling dynamics of the brindley's glands in the blood-sucking bug triatoma infestans (hemiptera: reduviidae) |
| publishDate |
2014 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221910_v71_n_p122_Palottini http://hdl.handle.net/20.500.12110/paper_00221910_v71_n_p122_Palottini |
| work_keys_str_mv |
AT manriquegabriel fillingdynamicsofthebrindleysglandsinthebloodsuckingbugtriatomainfestanshemipterareduviidae |
| _version_ |
1768544582601015296 |