六溴环十二烷对拟长腹剑水蚤的急性毒性和生殖发育毒性效应

发布时间：2018-09-07 08:13

【摘要】：为探讨六溴环十二烷(Hexabromocyclododecane,HBCD)对海洋桡足类的毒性效应,本文研究了HBCD对拟长腹剑水蚤(Oithona similis)急性毒性、变态率、变态时间、成熟时间及繁殖力的影响。结果显示:HBCD对拟长腹剑水蚤的96h-LC50为1.75mg·L-1;不同浓度HBCD暴露下拟长腹剑水蚤的变态率、变态时间、首次抱卵时间、卵囊发育时间及抱卵雌体比率均受到显著影响;各浓度HBCD对拟长腹剑水蚤的生殖力未造成显著影响。研究表明,HBCD对拟长腹剑水蚤的急性毒性相对较低,但对其生殖发育具有显著的毒性效应,这可为HBCD的潜在生态风险评估提供一定的科学依据。
[Abstract]:In order to study the toxic effects of hexabromocyclododecane (Hexabromocyclododecane,HBCD) on marine copepods, the effects of HBCD on the acute toxicity, metamorphosis rate, metamorphosis time, maturation time and fecundity of (Oithona similis) were studied. The results showed that the 96h-LC50 of WHBCD to Daphnia lanceolata was 1.75mg L-1.The rate of metamorphosis, the time of first egg holding, the time of development of egg sac and the ratio of oocyst to female were significantly affected by different concentrations of HBCD. There was no significant effect of HBCD concentration on fecundity of Daphnia lanceolata. The results showed that the acute toxicity of HBCD to Daphnia lanceolata was relatively low, but it had a significant toxic effect on its reproductive development, which could provide a scientific basis for the assessment of potential ecological risk of HBCD.
【作者单位】：中国海洋大学海洋生命学院;
【基金】：国家自然科学基金项目(31172412;31572621)资助~~
【分类号】：X171.5

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