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in this excellent paper, new effects of several chemicals, synthetic surfactants and chemical mixtures, on marine bivalves were studied. The author demonstrated that an anionic sunthetic surfactant, sodium dodecylsulphate (SDS), and a cationic surfactant, tetradecyltrimethylammonium bromide (TDTMA), inhibited the filtering activity of marine bivalves, oysters (Crassostrea gigas).
Similar effects were exhibited by some detergents - chemical mixtures that included surfactants. Those mixtures inhibited the filtering activity of Crassostrea gigas and marine mussels Mytilus galloprovincialis.
The new results are in agreement with the author's previous experiments. He demostrated that a number of xenobiotics and/or pollutants inhibited the filtering activity of several species of marine and freshwater bivalves, e.g., it had been shown that SDS inhibited filtering activity of marine mussels Mytilus edulis (e.g., Ostroumov, 2000c, 2001a).
This experimental approach is helpful in assessment of new environmental hazards from man-made chemicals that can contaminate marine systems.
The high importance of these findings is as following:
1)It is the first discovery of serious environmental hazards from synthetic surfactants and chemical mixtures that contain surfactants, especially in view of the fact that filtering activity of bivalve mollusks is a vital part of water self-purification and the natural mechanism for maintaining water quality;
2)It is a new evidence of serious environmental hazards from relatively mild, sublethal (in other words, less than lethal) effects of chemical pollutants (exemplified by surfactants, detergents);
3)It is very relevant to aquaculture (aqua-farming ) and mariculture. The new data discovered a new negative man-made impact on aquatic ecsystems that poses a threat to aquaculture of shellfish.
This paper is well cited in international scientific literature.
A detailed abstract is availble online here:
<a href="http://www.scribd.com/doc/63898669">Studying effects of some surfactants and detergents on filter-feeding bivalves</a>
Detailed explanations of the significance of these new data presented in this paper and some other related and relevant papers of the same author: