Gustatory feedback affects feeding related motor pattern generation in starved 3rd instar larvae of Calliphora vicina
| Autor: | Nasim Dokani Khesroshahi, Hans-Georg Heinzel, Senta Niederegger, Tim Ulama, Ulf Wessalowski, Roland Spieß |
|---|---|
| Rok vydání: | 2011 |
| Předmět: |
Sodium Acetate
Calliphora vicina Physiology Sensory system Motor Activity Biology Nervous System Calliphora Rhythm Feedback Sensory Animals Sensilla Larva Ethanol Diptera Taste Perception Central pattern generator Feeding Behavior biology.organism_classification Glucose Biochemistry Insect Science Dilator Instar Food Deprivation Neuroscience |
| Zdroj: | Journal of Insect Physiology. 57:872-880 |
| ISSN: | 0022-1910 |
| DOI: | 10.1016/j.jinsphys.2011.03.021 |
| Popis: | Gustatory feedback allows animals to distinguish between edible and noxious food and adapts centrally generated feeding motor patterns to environmental demands. In reduced preparations obtained from starved Calliphora larvae, putatively appetitive (ethanol), aversive (sodium acetate) and neutral (glucose) gustatory stimuli were applied to the anterior sense organs. The resulting sensory response was recorded from the maxillary and antennal nerves. All three stimuli increased the neural activity in both nerves. Recordings obtained from the antennal nerve to monitor the activation pattern of the cibarial dilator muscles, demonstrated an effect of gustatory input on the central pattern generator for feeding. Ethanol consistently enhanced the rhythmic activity of the CDM motor neurons either by speeding up the rhythm or by increasing the burst duration. Ethanol also had an enhancing effect on the motor patterns of a protractor muscle which moves the cephalopharyngeal skeleton relative to the body. Sodium acetate showed a state dependent effect: in preparations without spontaneous CDM activity it initiated rhythmic motor patterns, while an ongoing CDM rhythm was inhibited. Surprisingly glucose had an enhancing effect which was less pronounced than that of ethanol. Gustatory feedback therefore can modify and adapt the motor output of the multifunctional central pattern generator for feeding. |
| Databáze: | OpenAIRE |
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