Pb^(2+)、Cu^(2+)在黄颡鱼性腺中的富集及其对性腺发育的胁迫  

Accumulation of heavy metals Pb^(2+) and Cu^(2+) in ovary of Pelteobagrus fulvidraco and effects on ovum development

作　　者：唐建勋[1] 唐奕扬 程樟顺[3] 徐玉花[1] 刘忠良[1] 

机构地区：[1]金华职业技术学院农业与生物工程学院,浙江金华321007 [2]金华市海月传媒技术有限公司,浙江金华321000 [3]金华职业技术学院制药与材料工程学院,浙江金华321007

出　　处：《水资源保护》2012年第4期61-63,77,共4页Water Resources Protection

基　　金：金华市科技局计划项目(2008-2-053)

摘　　要：研究Pb2+、Cu2+在其不同质量浓度(0.10 mg/L、0.25 mg/L、0.50 mg/L)情况下在黄颡鱼性腺中的富集特性以及对性腺发育的影响。结果表明,黄颡鱼性腺(卵巢)对Pb2+、Cu2+有较强的富集能力,在暴露期间的20—30 d内,Pb2+、Cu2+在性腺内的富集量分别与时间呈线性关系,之后呈对数关系。其中,Cu2+的富集显著大于Pb2+(P<0.01);性腺中的重金属富集与水溶液中Pb2+、Cu2+的浓度相关(P<0.01),具有明显的时间效应和剂量效应。黄颡鱼性腺细胞的发育水平,亦与溶液Pb2+、Cu2+的浓度与暴露时间相关。The accumulation characteristics of Pb^2＋ and Cu^2＋ with concentrations of 0.10, 0.25, and 0.50 mg/L in the ovary of Pelteobagrus fulvidraco, as well as the subsequent effects on ovum development, were studied. It was found that the ovary of Pelteobagrus fulvidraco showed a high capacity for accumulation of Cu^2＋ and Pb^2＋ , and the correlation between the accumulation level and the exposure time was linear for the initial 20 to 30 days, but became exponential afterwards. In addition, the accumulation of Cu^2＋ was significantly higher than that of Pb^2＋ （ P 〈 0.01 ）. The ovarian accumulation of heavy metals was time-and dose-dependent, related to the concentrations of Cu^2＋ and Pb^2＋ （ P 〈 0.0l ）. The development of the ova was affected by the concentrations of Cu^2＋ and Pb^2＋ and exposure duration.

关 键 词：PB^2+ CU^2+ 黄颡鱼 卵巢 卵细胞 富集 

分 类 号：X171.5[环境科学与工程—环境科学] Q178[生物学—水生生物学]