Species features of the architectonics pallium of the telencephalon in carnivores

The article presents the results of studies on the architectonics surface pallium of the telencephalon in American minks of Standard dark brown genotype (+/+) of cage-keeping, domestic cats and silver-black foxes of cage-keeping. The studies were carried out at the Department of Obstetrics, Anatomy and Histology of the Federal State Budgetary Educational Institution of Higher Education of the Novosibirsk State Agrarian University and based on the experimental fur farm of the Institute of Cytology and Genetics of the Siberian Branch of the Russian Academy of Sciences during 2018-2023. Macroscopic examinations and morphometry of brain structures were performed during the study period. Brain sections and telencephalon pallium were found to share a common structure with other carnivorous mammals, but there are species differences in the architectonics of the pallium. The common sulcus in the animals studied were the s. presylvius, s. cruciatus, s. ansatus, s. coronalis, s. marginalis (sagittalis), s. suprasylvius, s. rhinalis lateralis, s. corporis callosi, s. splenialis, s. genualis and fissura pseudosylvia, and the gyrus – g. marginalis, g. precruciatus, g. postcruciatus, g. ectosylvius, g. olfactorius lateralis, g. olfactorius medialis, g. cinguli and g. genualis. In the American mink species-specific sulcus and gyrus include g. proreus, g. suprasylvius and g. coronalis, in the domestic cat – s. diagonalis, s. suprasplenialis and g. splenialis, and in the silver-black fox – s. postcruciatus, s. proreus (orbitalis), s. ectomarginalis, s. ectogenualis and g. ectogenualis. In addition, animals have species-specific subdivision of sulcus and gyrus, as well as the absence of some of them. The absolute brain mass in the American mink was 9.19±0.22 g, 28.65±0.78 g in the domestic cat, and 53.57±0.7 g in the silver-black fox. No differences were found between right and left hemisphere sizes.