Myoendocardial formations of the chambers of the heart of the water deer (Hydropotes Inermis) in statistics

Abstract

This article is a continuation of a series of studies devoted to a fairly new animal species for the Russian Federation – the water deer (Hydropotes inermis argyropus). This representative of the animal world was recorded not so long ago in the expanses of the Far Eastern taiga, but is already listed in the Red Book of Russia. The water deer spreads its habitat from China and Korea, which are traditional for it, and is still not numerous for our country, but it is already becoming an object of illegal extraction for poachers. The Diagnostic Center of the Primorsky State Agricultural Academy receives cadaverous material from a water deer for examination, as part of the investigation and legal proceedings, which also allows to study its morphology. In the process of forensic veterinary examination, standard methods for studying morphometric features of the organism are applied to the material. The organs are measured, photographed with a description of all the noted features. In the process of writing the article, we studied three hearts from animals of both sexes, aged 2-3 years. It was found that the morphometric parameters of the heart within the group varied slightly. The heart is well developed, the index corresponds to a spherical shape. The architectonics of myoendocardial formations is quite stable in its structure in animals of the studied group, they are recognizable when working with each new heart of a water deer. The heart of a water deer is rounded, with a pointed tip, has pronounced auricles of the atria, while the right one is slightly larger than the left one. The ratio of the thickness of the walls of the left and right ventricles is 2:1, respectively. Similar indicators of the walls of the atria vary slightly. The heart of a water deer is distinguished by a well-defined trabecular system, the scallop muscles of the atria and the fleshy trabeculae of the ventricles have a pronounced comblike structure. The absence of a caudal septomarginal trabecula in the right ventricle was noted, however, its role is performed by a network of tendon-shaped trabeculae located between the interventricular septum and the caudal wall, forming several tiers.