Serotonin depresses feeding behaviour in ants
Feeding behaviour is a complex functional system that relies on external signals and the physiological state of the animal. This is also the case in ants as they vary their feeding behaviour according to food characteristics, environmental conditions and - as they are social insects - to the colony&...
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2012
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| Acceso en línea: | https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221910_v58_n1_p7_Falibene http://hdl.handle.net/20.500.12110/paper_00221910_v58_n1_p7_Falibene |
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paper:paper_00221910_v58_n1_p7_Falibene2023-06-08T14:47:15Z Serotonin depresses feeding behaviour in ants Falibene, Agustina L. Josens, Roxana Beatriz Alimentary canal Ants Frontal ganglion Nectar feeding Suboesophageal ganglion Sucking pump serotonin serotonin agonist sucrose ant cell organelle colony structure developmental biology environmental conditions feeding behavior hormone social insect sucrose threshold animal ant article dose response drug effect feeding behavior ganglion gastrointestinal tract immunohistochemistry locomotion physiology Animals Ants Dose-Response Relationship, Drug Feeding Behavior Ganglia, Invertebrate Gastrointestinal Tract Immunohistochemistry Locomotion Serotonin Serotonin Receptor Agonists Sucrose Animalia Aves Formicidae Hexapoda Invertebrata Vertebrata Feeding behaviour is a complex functional system that relies on external signals and the physiological state of the animal. This is also the case in ants as they vary their feeding behaviour according to food characteristics, environmental conditions and - as they are social insects - to the colony's requirements. The biogenic amine serotonin (5-HT) was shown to be involved in the control and modulation of many actions and processes related to feeding in both vertebrates and invertebrates. In this study, we investigated whether 5-HT affects nectar feeding in ants by analysing its effect on the sucking-pump activity. Furthermore, we studied 5-HT association with tissues and neuronal ganglia involved in feeding regulation. Our results show that 5-HT promotes a dose-dependent depression of sucrose feeding in C. amponotus mus ants. Orally administered 5-HT diminished the intake rate by mainly decreasing the volume of solution taken per pump contraction, without modifying the sucrose acceptance threshold. Immunohistochemical studies all along the alimentary canal revealed 5-HT-like immunoreactive processes on the foregut (oesophagus, crop and proventriculus), while the midgut and hindgut lacked 5-HT innervation. Although the frontal and suboesophageal ganglia contained 5-HT immunoreactive cell bodies, serotonergic innervation in the sucking-pump muscles was absent. The results are discussed in the frame of a role of 5-HT in feeding control in ants. © 2011 Elsevier Ltd. Fil:Falibene, A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Josens, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2012 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221910_v58_n1_p7_Falibene http://hdl.handle.net/20.500.12110/paper_00221910_v58_n1_p7_Falibene |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-134 |
| collection |
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) |
| topic |
Alimentary canal Ants Frontal ganglion Nectar feeding Suboesophageal ganglion Sucking pump serotonin serotonin agonist sucrose ant cell organelle colony structure developmental biology environmental conditions feeding behavior hormone social insect sucrose threshold animal ant article dose response drug effect feeding behavior ganglion gastrointestinal tract immunohistochemistry locomotion physiology Animals Ants Dose-Response Relationship, Drug Feeding Behavior Ganglia, Invertebrate Gastrointestinal Tract Immunohistochemistry Locomotion Serotonin Serotonin Receptor Agonists Sucrose Animalia Aves Formicidae Hexapoda Invertebrata Vertebrata |
| spellingShingle |
Alimentary canal Ants Frontal ganglion Nectar feeding Suboesophageal ganglion Sucking pump serotonin serotonin agonist sucrose ant cell organelle colony structure developmental biology environmental conditions feeding behavior hormone social insect sucrose threshold animal ant article dose response drug effect feeding behavior ganglion gastrointestinal tract immunohistochemistry locomotion physiology Animals Ants Dose-Response Relationship, Drug Feeding Behavior Ganglia, Invertebrate Gastrointestinal Tract Immunohistochemistry Locomotion Serotonin Serotonin Receptor Agonists Sucrose Animalia Aves Formicidae Hexapoda Invertebrata Vertebrata Falibene, Agustina L. Josens, Roxana Beatriz Serotonin depresses feeding behaviour in ants |
| topic_facet |
Alimentary canal Ants Frontal ganglion Nectar feeding Suboesophageal ganglion Sucking pump serotonin serotonin agonist sucrose ant cell organelle colony structure developmental biology environmental conditions feeding behavior hormone social insect sucrose threshold animal ant article dose response drug effect feeding behavior ganglion gastrointestinal tract immunohistochemistry locomotion physiology Animals Ants Dose-Response Relationship, Drug Feeding Behavior Ganglia, Invertebrate Gastrointestinal Tract Immunohistochemistry Locomotion Serotonin Serotonin Receptor Agonists Sucrose Animalia Aves Formicidae Hexapoda Invertebrata Vertebrata |
| description |
Feeding behaviour is a complex functional system that relies on external signals and the physiological state of the animal. This is also the case in ants as they vary their feeding behaviour according to food characteristics, environmental conditions and - as they are social insects - to the colony's requirements. The biogenic amine serotonin (5-HT) was shown to be involved in the control and modulation of many actions and processes related to feeding in both vertebrates and invertebrates. In this study, we investigated whether 5-HT affects nectar feeding in ants by analysing its effect on the sucking-pump activity. Furthermore, we studied 5-HT association with tissues and neuronal ganglia involved in feeding regulation. Our results show that 5-HT promotes a dose-dependent depression of sucrose feeding in C. amponotus mus ants. Orally administered 5-HT diminished the intake rate by mainly decreasing the volume of solution taken per pump contraction, without modifying the sucrose acceptance threshold. Immunohistochemical studies all along the alimentary canal revealed 5-HT-like immunoreactive processes on the foregut (oesophagus, crop and proventriculus), while the midgut and hindgut lacked 5-HT innervation. Although the frontal and suboesophageal ganglia contained 5-HT immunoreactive cell bodies, serotonergic innervation in the sucking-pump muscles was absent. The results are discussed in the frame of a role of 5-HT in feeding control in ants. © 2011 Elsevier Ltd. |
| author |
Falibene, Agustina L. Josens, Roxana Beatriz |
| author_facet |
Falibene, Agustina L. Josens, Roxana Beatriz |
| author_sort |
Falibene, Agustina L. |
| title |
Serotonin depresses feeding behaviour in ants |
| title_short |
Serotonin depresses feeding behaviour in ants |
| title_full |
Serotonin depresses feeding behaviour in ants |
| title_fullStr |
Serotonin depresses feeding behaviour in ants |
| title_full_unstemmed |
Serotonin depresses feeding behaviour in ants |
| title_sort |
serotonin depresses feeding behaviour in ants |
| publishDate |
2012 |
| url |
https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00221910_v58_n1_p7_Falibene http://hdl.handle.net/20.500.12110/paper_00221910_v58_n1_p7_Falibene |
| work_keys_str_mv |
AT falibeneagustinal serotonindepressesfeedingbehaviourinants AT josensroxanabeatriz serotonindepressesfeedingbehaviourinants |
| _version_ |
1768543881156100096 |