17β-雌二醇对稀有鮈鲫(Gobiocypris rarus)幼鱼生长及性分化的影响

被引:3
作者
王星 [1 ,2 ]
汤保华 [2 ]
蔡磊明 [3 ]
赵玉艳 [2 ]
于保青 [2 ]
王捷 [2 ]
机构
[1] 新疆农业大学草业与环境科学学院
[2] 沈阳化工研究院有限公司安全评价中心
[3] 浙江省农业科学院农产品质量标准研究所农业部农药残留检测重点实验室
关键词
17β-雌二醇; 稀有鮈鲫; 性分化;
D O I
10.16820/j.cnki.1006-0413.2012.07.014
中图分类号
X174 [环境动物学];
学科分类号
071012 ; 0713 ;
摘要
[方法]通过51 dph(days post hatch)稀有鮈鲫幼鱼在不同质量浓度17β-雌二醇(E2)中经过28 d的流水式暴露研究,观察了E2对稀有鮈鲫幼鱼生长状态、卵黄蛋白原(VTG)含量、性别比率和性腺组织学的影响。[结果]观察发现,与对照组相比,259、1180 ng/LE2处理组中的稀有鮈鲫幼鱼体长生长受到显著性抑制(P≤0.05,P≤0.01);8、48、259 ng/L处理组雌鱼VTG含量水平显著降低(P≤0.01),而雄鱼在1180 ng/L处理组中V T G含量水平显著升高(P≤0.01);通过组织病理学观察,E2对稀有鮈鲫幼鱼雌雄性别比率未产生显著影响,但在48 ng/L处理组出现雌雄间体现象,同时,在259、1180 ng/L处理组中,雄鱼精巢出现明显的萎缩。[结论]17β-雌二醇对51 dph的稀有鮈鲫性腺分化产生了雌激素效应,但用稀有鮈鲫作为筛选和评价内分泌干扰物的活体试验模型还需要进一步研究。
引用
收藏
页码:513 / 516
页数:4
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