Exposure to perfluorooctane sulfonic acid (PFOS) adversely affects the life-cycle of the damselfly Enallagma cyathigerum |
| |
Authors: | Jessica Bots Luc De Bruyn Tom Snijkers |
| |
Affiliation: | a Evolutionary Ecology Group, University of Antwerp, Groenenborgerlaan 171, B-2020 Antwerpen, Belgium b Research Institute for Nature and Forest (INBO), Kliniekstraat 25, 1070 Brussels, Belgium c Department PIH Environment, University College West Flanders (HOWEST), Graaf K. 11 de Goedelaan 5, B-8500 Kortrijk, Belgium |
| |
Abstract: | We evaluated whether life-time exposure to PFOS affects egg development, hatching, larval development, survival, metamorphosis and body mass of Enallagma cyathigerum (Insecta: Odonata). Eggs and larvae were exposed to five concentrations ranging from 0 to 10 000 μg/L. Our results show reduced egg hatching success, slower larval development, greater larval mortality, and decreased metamorphosis success with increasing PFOS concentration. PFOS had no effect on egg developmental time and hatching or on mass of adults. Eggs were the least sensitive stage (NOEC = 10 000 μg/L). Larval NOEC values were 1000 times smaller (10 μg/L). Successful metamorphosis was the most sensitive response trait studied (NOEC < 10 μg/L). The NOEC value suggests that E. cyathigerum is amongst the most sensitive freshwater organisms tested. NOEC for metamorphosis is less than 10-times greater than the ordinary reported environmental concentrations in freshwater, but is more than 200-times smaller than the greatest concentrations measured after accidental releases. |
| |
Keywords: | Perfluorooctane sulfonic acid PFOS Damselfly Larvae Survival Growth Egg hatching Metamorphosis Life-time exposure |
本文献已被 ScienceDirect 等数据库收录! |
|