Anatomical and functional characterisation of the stomatogastric nervous system of blowfly (Calliphora vicina) larvae
| Autor: | Andreas Schoofs, Roland Spiess |
|---|---|
| Rok vydání: | 2007 |
| Předmět: |
animal structures
Calliphora vicina Physiology Frontal nerve Sensory system Stimulation Biology Efferent Pathways Nervous System Calliphora Digestive System Physiological Phenomena Stomatogastric nervous system medicine Animals Nervous System Physiological Phenomena medicine.cranial_nerve Neurons Afferent Pathways Diptera fungi Foregut Anatomy biology.organism_classification Ganglion medicine.anatomical_structure Larva Insect Science Digestive System Neuroscience |
| Zdroj: | Journal of Insect Physiology. 53:349-360 |
| ISSN: | 0022-1910 |
| DOI: | 10.1016/j.jinsphys.2006.12.009 |
| Popis: | The anatomy and functionality of the stomatogastric nervous system (SNS) of third-instar larvae of Calliphora vicina was characterised. As in other insects, the Calliphora SNS consists of several peripheral ganglia involved in foregut movement regulation. The frontal ganglion gives rise to the frontal nerve and is connected to the brain via the frontal connectives and antennal nerves (ANs). The recurrent nerve connects the frontal- to the hypocerebral ganglion from which the proventricular nerve runs to the proventricular ganglion. Foregut movements include rhythmic contractions of the cibarial dilator muscles (CDM), wavelike movements of crop and oesophagus and contractions of the proventriculus. Transections of SNS nerves indicate mostly myogenic crop and oesophagus movements and suggest modulatory function of the associated nerves. Neural activity in the ANs, correlating with postsynaptic potentials on the CDM, demonstrates a motor pathway from the brain to CDM. Crop volume is monitored by putative stretch receptors. The respective sensory pathway includes the recurrent nerve and the proventricular nerve. The dorsal organs (DOs) are directly connected to the SNS. Mechanical stimulation of the DOs evokes sensory activity in the AN. This suggests the DOs can provide sensory input for temporal coordination of feeding behaviour. |
| Databáze: | OpenAIRE |
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