悬浮物对褐牙鲆幼鱼的急性毒理效应

发布时间：2018-06-13 22:00

本文选题：悬浮物 + 褐牙鲆　；参考：《海洋湖沼通报》2016年06期

【摘要】：为探讨悬浮物对褐牙鲆(Paralichthys olivaceus)幼鱼(25~35mm)的毒性效应及存活影响,研究了悬浮物(粒径为1.102μm~14.501μm)对褐牙鲆幼鱼的毒性效应。结果表明,随着悬浮物浓度的增加,褐牙鲆死亡率逐渐上升。当悬浮物浓度≥2000mg/L时,实验组与对照组96h时死亡率有极显著差异(P0.01)。通过Bliss法计算得出,悬浮物对褐牙鲆幼鱼的24、48、72和96hLC_(50)(95%可信限)分别为:29 981mg/L(18 687~157 229mg/L)、26 218mg/L(17 154~73 764mg/L)、19 859mg/L(14 019~42 252mg/L)、12 637mg/L(10 010~18 998mg/L),随着水体中悬浮物暴露时间的延长,悬浮物对褐牙鲆的LC_(50)逐渐减小。根据96hLC_(50)计算得出悬浮物对褐牙鲆的安全浓度(SC)为1263.7mg/L。与已报道的其它物种比较,褐牙鲆属对悬浮物耐受性较强的物种。
[Abstract]:In order to study the toxicity and survival effect of suspended solids on juvenile Paralichthys olivaceus of Paralichthys olivaceus (25 ~ 35mm), the toxicity of suspended solids (1.102 渭 m ~ 14.501 渭 m) to juvenile Paralichthys olivaceus was studied. The results showed that the mortality of Paralichthys olivaceus increased with the concentration of suspended solids. When the concentration of suspended matter was more than 2000 mg / L, the mortality of the experimental group and the control group was significantly different at 96 h (P 0.01). By Bliss method, the maximum confidence limits of suspended matter to juvenile fish of Paralichthys olivaceus were: 29 981mg / L 18 687157 229mg / L = 29 981 mg / L = 26 218mg / L / L = 19 859mg / L / L = 19 859mg / L = 14 859mg / L = 12 637mg / L 10 0101018998mg / L, respectively. As the exposed time of suspended solids in the water increased, the suspended solids gradually decreased to 50 mg / L for Paralichthys olivaceus (P / L = 19 859 mg / L = 14 859 mg / L = 14 019 9 mg / L = 12 637 mg / L 10 01010 9 998 mg / L), with the increase of the exposure time of suspended solids to Paralichthys olivaceus, the effect of suspended solids on Paralichthys olivaceus was gradually reduced. The safe concentration of suspended solids for Paralichthys olivaceus was calculated to be 1263.7 mg / L according to 96hLC _ (50). Compared with other reported species, Paralichthys brownolivaceus has stronger tolerance to suspended solids.
【作者单位】：临沂出入境检验检疫局;天津渤海水产研究所;
【基金】：天津市水产局青年科技创新项目——悬浮物胁迫对褐牙鲆存活、抗氧化系统酶活力及基因表达的研究(J2014-02) 天津市农委农业科技合作项目——海水新品种的引进及示范(201304070) 国家鲆鲽类产业技术体系项目——天津综合试验站建设(CARS-50-z01) 天津市科技计划项目——海珍品高效养殖技术集成与应用(15zxbfnc00100) 国家农业科技成果转化项目——鲆鲽类高效生态养殖技术的集成与示范(2014GB2A100531)资助
【分类号】：X171.5;S917.4

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