In this work, the toxicity of 11 products (three brands of mouthwash, three toothpastes, three detergents and two analgesics) was evaluated in relation to juvenile snails Physa acuta (Draparnaud, 1805). Bioassays of toxicity were conducted and the organisms exposed to six concentrations of each product, along with a control group, to determine the 96-hour LC50 (Lethal Concentration 50). The sensitivity of the gastropods to the different products was determined by comparing their LC50 values to that of acute toxicity values. In addition, the degree of lipoperoxidation in the gastropod tissue was evaluated by measuring the concentration of MDA (malondialdehyde) in sublethal tests (LC10) for chronic toxicity (during 30-day exposure). The toxicity of the products tested varied from highly toxic and harmful (mouthwashes) through harmful (detergents), potentially harmful (analgesics), and non-toxic (toothpastes). The degree of lipoperoxidation observed in the sublethal tests was (from most to least toxic): Analgesics > Mouthwashes > Detergents > Toothpastes. These results indicate that a certain risk exists resulting from the presence in wastewater dumped into aquatic systems of components of these products which may cause adverse effects on populations of P. acuta and other aquatic organisms.
You have requested a machine translation of selected content from our databases. This functionality is provided solely for your convenience and is in no way intended to replace human translation. Neither BioOne nor the owners and publishers of the content make, and they explicitly disclaim, any express or implied representations or warranties of any kind, including, without limitation, representations and warranties as to the functionality of the translation feature or the accuracy or completeness of the translations.
Translations are not retained in our system. Your use of this feature and the translations is subject to all use restrictions contained in the Terms and Conditions of Use of the BioOne website.
Vol. 33 • No. 2