摘要
为探讨双酚A(bisphenol A,BPA)对稀有鮈鲫胚胎和仔鱼的毒性,利用静水暴露染毒法对稀有鮈鲫胚胎及仔鱼进行急性暴露。结果表明,在试验浓度范围内,BPA对稀有鮈鲫胚胎和仔鱼成活率均有显著影响(P<0.05)。胚胎暴露96 h后的半致死浓度(LC_(50))为10.096 mg·L~(-1);仔鱼暴露96 h后LC_(50)为4.237 mg·L~(-1)。BPA对稀有鮈鲫胚胎的毒性效应表现为孵化延迟、死亡率增加、心率下降,对仔鱼的毒性效应表现死亡率升高、心包囊水肿、心率下降、鱼鳔充气率下降。稀有鮈鲫胚胎和仔鱼对BPA毒性的敏感度存在差异,仔鱼对BPA暴露更为敏感。本研究旨在为BPA对鱼类早期发育阶段的毒性效应提供基础资料。
引文
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