天津农学院学报 ›› 2025, Vol. 32 ›› Issue (1): 44-50.doi: 10.19640/j.cnki.jtau.2025.01.009

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对二甲苯对蒙古裸腹溞的毒性及其跨代影响

王嘉伟, 崔竞丹, 赵文通信作者, 王媛, 王珊   

  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
  • 收稿日期:2024-03-14 发布日期:2025-03-04
  • 通讯作者: 赵文(1963—),男,教授,博士,主要从事水产养殖和水生生物学研究。E-mail:zhaowen@dlou.edu.cn。
  • 作者简介:王嘉伟(1999—),男,硕士在读,从事水域生态学研究。E-mail:wangjiaw0915@163.com。
  • 基金资助:
    国家自然科学基金(42077226); 国家科技基础性工作专项(2014FY2010700)

Toxicity and transgenerational effects of p-xylene on Moina mongolica

Wang Jiawei, Cui Jingdan, Zhao WenCorresponding Author, Wang Yuan, Wang Shan   

  1. Key Laboratory of Hydrobiology in Liaoning Province, College of Fisheries and Life Science, Dalian Ocean University, Dalian 116023, Liaoning Province, China
  • Received:2024-03-14 Published:2025-03-04

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、pH 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 LC50、48 h LC50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。

关键词: 对二甲苯, 蒙古裸腹溞, 急性毒性, 跨代毒性

Abstract: 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 2 000 to 3 000 lx. The results showed that the 24 h LC50 and 48 h LC50 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.

Key words: p-xylene, Moina mongolica, acute toxicity, transgenerational toxicity

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