Morphofunctional characteristics of Trichinella spiralis capsules and larvae obtained from the lynx in spontaneous infection and experimental infection of white rats

The purpose of the research is a comparative study of morphological changes in Trichinella spiralis capsules and larvae in the lynx and laboratory animals.Materials and methods. The experiment used striated muscle tissue from spontaneously infected lynxes and from white rats experimentally infected with T. spiralis larvae isolated from wild animals in the Kirov Region. Morphometric studies of T. spiralis capsules and larvae in the lynx muscle tissue were conducted on temporary histologic specimens.Results and discussion. Lemon-shaped (50%) and oval (40%) capsules were found in the entire muscle mass of the white rats, and only 10% of the larvae were round in shape. The lynx was not found to have lemon-shaped capsules; oval (60%) and round (40%) capsules predominated. The studies show that the parasite capsule size and shape indicate the adaptive abilities of T. spiralis to various types of host muscle tissue and their morphological characteristics, and are largely determined by the symplast structure and size.