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Acute toxicity effects of perfluorooctane sulfonate on sperm vitality,kinematics and fertilization success in zebrafish |
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| Authors: | Xia Jigang Niu Cuijuan |
| Institution: | 1.Laboratory of Evolutionary Physiology and Behavior, Chongqing Key Laboratory of Animal Biology, College of Life Sciences, Chongqing Normal University, Chongqing, 401331, China ;2.Ministry of Education Key Laboratory of Biodiversity Science and Ecological Engineering, College of Life Sciences, Beijing Normal University, Beijing, 100875, China ; |
| Abstract: | Perfluorooctane sulfonate(PFOS) has emerged as one of the most concerning contaminants in recent years.This study aimed to investigate the acute toxicity effect of PFOS on sperm viability,kinematics and fertilization success in zebrafish(Danio rerio).Sperm were activated in aqueous media containing a range of PFOS concentrations(0,0.09,0.9 and 9 mg/L).Viabilities and kinematics of the sperm exposed to different PFOS treatments were assessed via computer-assisted sperm analysis(CASA) at 20,40,60,and 80 s after activation.PFOS exposure decreased the percentage of motile sperm,the curvilinear velocity(VCL),and the mean angular displacement(MAD) of spermatozoa,but showed no influence on the straightline velocity(VSL) or the angular path velocity(VAP).Furthermore,a significant decrease in fertiUzation success was observed in spermatozoa that were exposed to 0.9 mg/L PFOS or more.These findings indicate that PFOS pollution in natural aquatic environment may be a potential threaten to successful reproduction offish. |
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