Mycotoxins diffusion in feeds of summer pasturing ration of Rangifer tarandus in arctic zones of Russia

In the summer and autumn, the food base of Rangifer tarandus consists of up to 300 species of higher plants, of which lichens account for about 15 %. It is shown that in the tissues of some higher plants and in the soil under lichens there are micromycetes capable of producing mycotoxins. In the present work, we are the first to estimate the content of mycotoxins for the components of summer reindeer rations, i.e. Salix borealis, Vaccinium uliginosum, Betula nana, and B. pendula. The aim of the study was to analyze the distribution of mycotoxins in the components of the summer diet of reindeer. Samples of genera Cladonia and Nephroma lichens, higher plants of the species Salix borealis, Vaccinium uliginosum, Betula nana, B. pendula, and mixtures of perennial grasses were collected in early August 2017 in the pastures of the Harp town of the Yamalo-Nenets Autonomous District, the Nelmin-Nos town of Nenets Autonomous District and the Pushnoy town of the Murmansk region. Aflatoxins (AFLA), ochratoxin A (OTA), T-2 toxin (T-2), zearalenone (ZEN), deoxynivalenol (DON) were detected and measured in the samples using ELISA test...