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Specialists of TINRO-Centre on Monday caught from the Amur River pikes, catfish and crucian carps affected with bleeding ulcers
Specialists of the Khabarovsk-based branch of the Pacific Research Fisheries Centre (TINRO-Centre) on Monday caught from the Amur River pikes, catfish and crucian carps affected with bleeding ulcers. The specialists have begun fish catches for research within the framework of scientific monitoring of the Amur River biological resources. The ichthyologists have so far withheld comment. The causes of the fish affection and the degree of the nitrobenzene and other chemicals' effect on it will be established after complex laboratory analyses. The TINRO-Centre regional branch experts stressed fish with ulcers had been noticed also in the past, but not very often. The current degree of fish affection is worrisome, they noted. The lessons and possible after-effects of the Amur and Sungari Rivers contamination with toxic agents after an explosion at a chemical plant in the Chinese province Jilin have been analysed at a meeting of the Far East scientists and heads of territories held in Khabarovsk. Deputy Natural Resources Minister of the Khabarovsk territory Sergei Andriyenko said that during the flow of the toxic slick the concentration of nitrobenzene in the area of the Nizhne-Leninsky settlement "exceeded 20 maximum permissible contamination levels for water supply reservoirs," and in the areas of the Petrovskoye and Nizhne-Spasskoye settlements - 14 and 8 maximum permissible levels, correspondingly. An alarming situation has been registered towards the Amur River lower course as regards the maximum permissible contamination levels for fish, which are 20 times stricter than the drinking water norms. During the monitoring the scientists have found in fish "an excess of maximum heavy metal concentration for food products," it was pointed out at the meeting. Besides, the scientists have made an alarming forecast - in spring and summer the Amur River contamination may prove to be more dangerous than during the Sungari slick passage. Huge masses of chemicals frozen in the ice and concentrated in bottom sediments will inevitably get into the Sungari and Amur Rivers and floods will carry a part of the chemicals to floodplain lakes and bays, to fish spawning areas
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