对二甲苯对蒙古裸腹溞的毒性及其跨代影响  

Toxicity and transgenerational effects of p-xylene on Moina mongolica

作　　者：王嘉伟 崔竞丹 赵文 王媛 王珊 Wang Jiawei;Cui Jingdan;Zhao Wen;Wang Yuan;Wang Shan(Key Laboratory of Hydrobiology in Liaoning Province,College of Fisheries and Life Science,Dalian Ocean University,Dalian 116023,Liaoning Province,China)

机构地区：[1]大连海洋大学水产与生命学院辽宁省水生生物学重点实验室,辽宁大连116023

出　　处：《天津农学院学报》2025年第1期44-50,共7页Journal of Tianjin Agricultural University

基　　金：国家自然科学基金(42077226);国家科技基础性工作专项(2014FY2010700)。

摘　　要：本文研究了对二甲苯(PX)对蒙古裸腹溞(Moina mongolica)的急性毒性和跨代毒性效应。试验在海水盐度30±0.5、p H 8.1、温度28℃、光照周期12L-12D、光照强度2 000~3 000 lx的条件下进行。结果表明:PX对蒙古裸腹溞的24 h LC_(50)、48 h LC_(50)值分别为9.82 mg/L和7.16 mg/L,安全浓度为1.14 mg/L。在0.20~1.00 mg/L PX影响下,与对照组相比,总生殖量和首窝生殖量等先在亲体P代显著下降(P<0.05),至F2代恢复正常水平,在F3或F4代出现显著降低的跨代效应。本研究表明PX对蒙古裸腹溞的毒性效应可以传递给后续世代,本研究结果可为海洋有机污染物检测和新型测试生物筛选提供理论依据。This study investigated the acute toxicity and transgenerational effects of p-xylene(PX)on Moina mongolica.The experiments were conducted under the following conditions:salinity of seawater 30±0.5,pH 8.1,temperature set at 28℃,and a light-dark cycle of 12L-12D with light intensity ranging from 2000 to 3000 lx.The results showed that the 24 h LC_(50) and 48 h LC_(50) values of PX on Moina mongolica were 9.82 mg/L and 7.16 mg/L,respectively,with a safety concentration of 1.14 mg/L.Under the influence of PX at concentrations ranging from 0.20 to 1.00 mg/L,significant decreases(P<0.05)were observed in total reproductive output and first brood reproductive output in the parental generation(P generation)compared to the control group.However,these parameters returned to normal levels in the F2 generation,with significant transgenerational effects appearing in the F3 or F4 generations.This study demonstrates that the toxic effects of PX on Moina mongolica can be transmitted to subsequent generations,providing theoretical support for the detection of marine organic pollutants and the screening of new test organisms.

关 键 词：对二甲苯 蒙古裸腹溞 急性毒性 跨代毒性 

分 类 号：X171.5[环境科学与工程—环境科学]