Journal of Siberian Federal University. Biology / Species-Specific Features of Neuron-Glial Populations in the Brain of Tailless Amphibians

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Issue
Journal of Siberian Federal University. Biology: 2019, Vol. 12, Issue 4
Authors
Afanaskina, Liubov’ N.; Medvedeva, Nadezhda N.
Contact information
Afanaskina, Liubov’ N.: V.F. Voyno-Yasenetsky Krasnoyarsk State Medical University 1 Partizan Zheleznyak Str., Krasnoyarsk, 660022, Russia; ; Medvedeva, Nadezhda N.: V.F. Voyno-Yasenetsky Krasnoyarsk State Medical University 1 Partizan Zheleznyak Str., Krasnoyarsk, 660022, Russia; ORCID: 0000-0002-7757-6628
Keywords
amphibians; the midbrain; neurons; cell populations; morphometry
Abstract

The midbrain roof and cerebellum cortex are the main integrative centers in amphibians. They serve to analyze and process nerve impulses, form the organism’s response, regulate and coordinate movements, connect amphibians with their environments. The present study addresses the relationship between the species of the tailless amphibians inhabiting the southern part of the Krasnoyarsk region (Bufo bufo Linnaeus, Rana arvalis Nilsson, Pelophylax ridibundus Pallas, and Rana amurensis Boulenger) and the morphological parameters of the populations of neurons and glia in layer VI of the midbrain roof and layers of the cerebellum cortex. The species-specific structure of amphibians’ brain regions has been found to be evident not only at the organ level (size and shape), but also at the level of the organization of neuron and glial cell populations. Distinctive species-specific differences can be found in the parameters of cell area (the area of the body, the area of the nucleus and the area of the cytoplasm) and the distribution density of neurons and gliocytes. The development of specific morphological features at the cellular level of the arrangement of the midbrain and cerebellum layers in different species of tailless amphibians is associated with long-term phylogenetic transformations of their nervous system and adaptation of amphibians to the terrestrial-aquatic habitat

Pages
445-459
DOI
10.17516/1997-1389-0311
Paper at repository of SibFU
http://elib.sfu-kras.ru/handle/2311/128440

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