Rebecca A. Consbrock
Erin L. Pulster
Brittany G. Perrotta
David Walters
Jeffery A. Steevens
David J. Soucek
2023
<div class="container container_scaled-down"><div class="row"><div class="col-xs-12"><div id="abstractBox" class="article_abstract-content hlFld-Abstract"><p class="articleBody_abstractText">Of the emerging contaminant types thought to threaten freshwater biota, per- and polyfluoroalkyl substances appear to be particularly widespread, and limited studies conducted with these compounds thus far indicate insects may be particularly sensitive to them. This study investigated the short- and long-term effects of two commonly detected compounds on the laboratory-reared mayfly<span> </span><i>Neocloeon triangulifer</i><span> </span>in water only exposures. In acute tests, the mayfly was approximately 85-fold more sensitive to perfluorooctanesulfonate (PFOS) and 7-fold more sensitive to perfluorooctanoic acid (PFOA) than the next most sensitive species reported in the literature. In 14 day and full-life chronic PFOS toxicity tests, the lowest 10% effect concentration was 0.272 μg of PFOS/L, which is lower than any previous reports to the best of our knowledge, but consistent in demonstrating the sensitivity of insects to this compound. Conversely,<span> </span><i>N. triangulifer</i><span> </span>was not particularly chronically sensitive to PFOA. This study demonstrates the risks of environmentally relevant concentrations of PFOS to a freshwater insect and suggests that investigation of the toxicity of more compounds with different carbon-chain lengths and functional groups to freshwater insects is needed.</p></div></div></div></div>
application/pdf
10.1021/acs.estlett.3c00056
en
American Chemical Society
Perfluorooctanesulfonate adversely affects a mayfly (Neocloeon triangulifer) at environmentally realistic concentrations
article