Trukhin A.M.,RAS Ilichev Pacific Oceanological Institute |
Boyarova M.D.,Pacific State Economics University
Contemporary Problems of Ecology | Year: 2013
Concentrations of chlorinated hydrocarbons and their derivatives in the organs of spotted seals captured in the Sea of Japan are determined. Isomers of hexachlorocyclohexane (HCCH) and metabolites of dichlorodiphenyltrihlormetilmetan (DDT) are detected in all the studied animals in all the samples, but the highest concentrations are found in adipose tissue, which is a peculiar depot in which toxins are accumulated. Substantial differences in the extent of damage by toxins are discovered in seals of different populations, which is due to different intensities in the action of technogenic load on separate water areas. The level of accumulation of lipophilic xenobiotics in the tissues and organs of spotted seals of the Sea of Japan, particularly from the Peter the Great Bay (PGB), turn out to be very high (several orders of magnitude higher than that in spotted seals from the Tatar Strait and the coastal region of Hokkaido). Such a high level of chlorinated organic pesticides (COPs) has not yet been detected in any Pinnipeds inhabiting the northern part of the Pacific Ocean. The results of our studies allow us to state that COPs have been present in the ecosystem are the Sea of Japan for a long time and have undergone substantial transformation. © 2013 Pleiades Publishing, Ltd.