Abstract
We studied Dicranophorus sp., Platyias quadricornis (Ehrb.) and Rotaria tardigrada (Ehrb.). These rotifers, systematically distant from each other, show the same pattern of the catecholaminergic (CA-ergic) part of the nervous system. It is formed of a small (23–24), but steady number of neurons characteristic for each species. Three types of CA-ergic neurons are described. The sizes of neurons vary from to two to ten µm. The distribution of the brain neurons is correlated with body shape. Such a type of nervous system is topographically comparable to the concentrated orthogon of the flatworms.
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Kotikova, E.A. Localization and neuroanatomy of catecholaminergic neurons in some rotifer species. Hydrobiologia 313, 123–127 (1995). https://doi.org/10.1007/BF00025940
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DOI: https://doi.org/10.1007/BF00025940