V. V. Bogatova and L. V. Bogatovab
aInstitute of Biology and Soil Science, Far East Division, Russian Academy of Sciences,
pr. Stoletiya Vladivostoka 159, Vladivostok, 690022 Russia;
e-mail: bogatov@ibss.dvo.ru
bFar Eastern State Technical University,
ul. Pushkinskaya 10, Vladivostok, 690950 Russia;
e-mail: libogatova@rambler.ru
Received August 20, 2007
Abstract—The contents of heavy metals (HMs) were studied in freshwater hydrobionts from the south of the
Russian Far East, including the area of wastewater discharge from a lead smelter (the village of Rudnaya
Pristan, Primorye). The results showed that most invertebrates disappeared from the ecosystem as the toxicity
of the aquatic environment increased. Mollusks of the genus Lymnaea proved to be most tolerant of HM pollu-
tion. As the contents of Pb, Mn, Cd, and Zn in bottom sediments increased, the amounts of these metals in mol-
lusk bodies increased as well but to a much lesser extent, with the intensity of HM accumulation decreasing at
their higher concentrations in the environment. The range of HM concentrations accumulated in the bodies of
limneids noticeably broadened with an increase in technogenic impact. This is evidence for differences in the
efficiency of mechanisms regulating the contents of trace elements in individuals of the same species under con-
ditions of extreme pollution.
DOI: 10.1134/S1067413609030072
Key words: Russian Far East, the Rudnaya River, heavy metals, mollusks, amphipods, may flies, caddis flies.
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