School of Biotechnology and Food Engineering, Hefei University of Technology, Hefei, 230009, China.
School of Medical Engineering, Hefei University of Technology, Hefei, 230009, China.
Environ Pollut. 2015 Nov;206:275-81. doi: 10.1016/j.envpol.2015.07.015. Epub 2015 Jul 20.
The adult zebrafish (Danio rerio) were exposed to treated-effluent concentration of bisphenol A (BPA) or 17β-estradiol (E2) for 6 months to evaluate their effects on behavioral characteristics: motor behavior, aggression, group preference, novel tank test and light/dark preference. E2 exposure evidently dampened fish locomotor activity, while BPA exposure had no marked effect. Interestingly, BPA-exposed fish reduced their aggressive behavior compared with control or E2. Both BPA and E2 exposure induced a significant decrease in group preference, as well as a weaker adaptability to new environment, exhibiting lower latency to reach the top, more entries to the top, longer time spent in the top, fewer frequent freezing, and fewer erratic movements. Furthermore, the circadian rhythmicity of light/dark preference was altered by either BPA or E2 exposure. Our results suggest that chronic exposure of treated-effluent concentration BPA or E2 induced various behavioral anomalies in adult fish and enhanced ecological risk to wildlife.
成年斑马鱼（Danio rerio）暴露于处理后的污水中双酚 A（BPA）或 17β-雌二醇（E2）浓度中 6 个月，以评估它们对行为特征的影响：运动行为、攻击性、群体偏好、新鱼缸测试和明暗偏好。E2 暴露显然会抑制鱼类的运动活动，而 BPA 暴露则没有明显的影响。有趣的是，与对照组或 E2 组相比，BPA 暴露的鱼类减少了其攻击性行为。BPA 和 E2 暴露均导致群体偏好显著降低，以及对新环境的适应性降低，表现在到达顶部的潜伏期更短、进入顶部的次数更多、在顶部停留的时间更长、冻结次数更少、不规则运动更少。此外，BPA 或 E2 暴露会改变光/暗偏好的昼夜节律性。我们的结果表明，长期接触处理后的污水 BPA 或 E2 会导致成年鱼类出现各种行为异常，并增加对野生动物的生态风险。
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