At the beginning of December 2020, we received the first information about the stranding of the corpses of the Red Book Caspian seals on the Dagestan coast. Employees of the A.N. Severtsov Institute of Ecology and Evolution RAS (IEE RAS) who have been studying this species within the framework of the international Kazakh-Russian Program of Caspian Seal Research in the Northern Caspian Sea (2019-2023), have left for the areas of stranding after the first reports.
On-site studies were organized jointly with the staff of the Caspian Institute of Biological Resources of the Dagestan Scientific Center of the Russian Academy of Sciences (PIBR DNC RAS) and a veterinarian of the Moskvarium Center for Oceanography and Marine Biology. Later, when the number of dead animals rose to the hundreds, employees of the All-Russian Research Institute of Fisheries and Oceanography (VNIRO) joined the IEE RAS expedition, which contributed to the expansion of the range of work.
For molecular-virological, toxicological, hormonal, genetic, histological and morphological studies, researchers from IEE RAS and a veterinarian of the Center for Oceanography and Marine Biology "Moskvarium" took samples of biological material from 13 dead seals. These were mainly adult females - five of them were pregnant. One of the animals showed signs of entangling, left over from being caught in the net.
24
December
2020