ABSTRACT:
NEW FACT: SYNTHETIC SURFACTANT SLOWS DOWN FEEDING RATE OF DAPHNIA.
Vorozhun I. M., S. A. Ostroumov. On studying the hazards of pollution of the biosphere: effects of sodium dodecylsulfate (SDS) on planktonic filter-feeders. - Doklady Biological Sciences, 2009, Vol. 425, pp. 133–134.
Tables. Bibliogr. 15 refs. ISSN 0012-4966.
DOI: 10.1134/S0012496609020136;
Full text online see:
https://www.researchgate.net/publication/216175249_On_studying_the_hazards_of_pollution_of_the_biosphere_effects_of_sodium_dodecylsulfate_%28SDS%29_on_planktonic_filter-feeders;
http://www.springerlink.com/content/p7754h672w814m30/;
** Full text online free: http://www.scribd.com/doc/45914806;
** http://www.citeulike.org/user/ATP/article/6113581;
[the original Russian text: I.M. Vorozhun, S.A. Ostroumov, 2009, published in Doklady Akademii Nauk, 2009, Vol. 425, No. 2, pp. 271–272].
**
The goal of this study was to test whether the surfactant SDS has an inhibitory effect on the ability of the planktonic filter-feeder Daphnia magna to remove phytoplankton from water during their filtration activity.
Daphnia were kept under laboratory conditions in vessels and fed with phytoplankton: the green algae Scenedesmus quadricauda (Turp.) Breb.
After filtration for 6–24 h in the presence of SDS at concentrations 5 and 10 mg/l, the abundance of S. quadricauda cells in water was higher than in the control.
At the lower SDS concentrations (0.1, 0.5, and 1 mg/l), differences in the abundance of algal cells relative to the control were observed after 3 h of incubation and disappeared after 6–24 h of incubation. The calculation of the mean rate of algae removal by daphnia showed that this parameter decreased within the first 3 h after the beginning of incubation in the presence of SDS.
**
IN SHORT: It is the first time that it was demonstrated that the synthetic surfactant SDS decreased the rate of water filtration by the planktonic crustaceans D. magna.
**
The conclusions of this article were confirmed in other publications of this author.
Many other relevant, related publications - references, links, comments - see here:
article: Biological filters are an important part of the biosphere // Science in Russia. 2009. No. 2, p. 30-36.
This paper reviews the multi-year research of aquatic organisms: the organisms which are filter-feeders. The research was done by Dr. Sergei A. Ostroumov in U.K., Russia, Ukraine, Moldova. New facts on the substancial role of the filter-feeders in improving water quality. New aspects of environmental hazards from chemical pollution, especially by surfactants and detergents.
http://5bio5.blogspot.ru/2014/04/biological-filters-are-important-part.html
https://www.researchgate.net/publication/261554265_Biological_filters_are_an_important_part_of_the_biosphere?ev=prf_pub
Environmental Toxicology ×
