EN
Bee anesthesia has long been widely used in scientific research and for practical purposes. Bee anesthesia is usually induced with carbon dioxide. It is required for such procedures as populating mating hives and cages, introducing queen bees and instrumental insemination. The oxygen to nitrogen ratio may play a very important role in the process of awakening. The aim of the experiment was to investigate the survival rate of worker bees after the application of different concentrations of oxygen and nitrogen in their recovery from anesthesia. The general purpose was to determine the optimal gas mixture for the fastest recovery and the longest survival of bees. The results of this study provide a basis for future experiments on queen bees aimed at accelerating the awakening from anesthesia with carbon dioxide during insemination as well as the initiation of laying eggs. The lowest bee mortality in the first days after awakening from anesthesia was observed in the group awoken in a mixture of 48.6% O₂ and 51.4% N₂, but the highest average survival rate was noted in the group awoken in 60% O₂ and 40% N₂.