Effect of Winter Dormancy on Three-Dimensional Structure of the Mauthner Neurons in Perccottus glehni Fish
Keywords:hypometabolic state, fish winter dormancy, Perccottus glehni, morphology, Mauthner neurons, 3D reconstruction
Investigation of the Mauthner neurons (MN) morphology in fish Perccottus glehni revealed a significant reduction in their volumes during dormancy, probably stipulated by a need to spare the body energy resources. The initial period of winter dormancy was characterized by a decrease in volumes of both main dendrites with no changes in somatic part of MN. During the terminal period of winter dormancy a total volume of soma and lateral dendrite reduced by 50%, and for the ventral one it did by 80%. It can be assumed that a decrease in integral neuronal volumes is associated with developing hypometabolism, as well as with a significantly decreased inputs of afferent information, entering MN from auditory and visual analyzers.
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Copyright (c) 2020 Irina M. Santalova, Nadezhda A. Penkova, Irina B. Mikheeva, Dmitry A. Moshkov
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