首页> 外文期刊>Environmental toxicology and chemistry >MONITORING ACUTE AND CHRONIC WATER COLUMN TOXICITY IN THE NORTHERN SACRAMENTO-SAN JOAQUIN ESTUARY, CALIFORNIA, USA, USING THE EURYHALINE AMPHIPOD, HYALELLA AZTECA: 2006 TO 2007
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MONITORING ACUTE AND CHRONIC WATER COLUMN TOXICITY IN THE NORTHERN SACRAMENTO-SAN JOAQUIN ESTUARY, CALIFORNIA, USA, USING THE EURYHALINE AMPHIPOD, HYALELLA AZTECA: 2006 TO 2007

机译:使用美国阿兹台克州的透明藻两栖类动物,监测美国加利福尼亚北部萨克拉门托-圣约翰河口的急性和慢性水柱毒性:2006年至2007年

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摘要

After the significant population decline of several pelagic fish species in the Northern Sacramento-San Joaquin (SSJ) Estuary (CA, USA) in 2002, a study was performed to monitor water column toxicity using the amphipod Hyalella azteca. From January 1,2006 to December 31, 2007, water samples were collected biweekly from 15 to 16 sites located in large delta channels and main-stem rivers, selected based on prevalent distribution patterns of fish species of concern. Ten-day laboratory tests with H. azteca survival and relative growth as toxicity endpoints were conducted. The enzyme inhibitor piperonyl butoxide ([PBO], 25 μg/L) was added to synergize or antagonize pyrethroid or organophosphate (OP) insecticide toxicity, respectively. Significant amphipod mortality was observed in 5.6% of ambient samples. Addition of PBO significantly changed survival or growth in 1.1% and 10.1% of ambient samples, respectively. Sites in the Lower Sacramento River had the largest number of acutely toxic samples, high occurrence of PBO effects on amphipod growth (along with sites in the South Delta), and the highest, total ammonia/ammonium concentrations (0.28 ± 0.15 mg/L). Ammonia/ ammonium, or contaminants occurring in mixture with these, likely contributed to the observed toxicity. Pyrethroid insecticides were detected at potentially toxic concentrations. Overall, results of this study identified specific areas and contaminants of concern and showed that water in the Northern SSJ Estuary was at times acutely toxic to sensitive invertebrates.
机译:在2002年北萨克拉曼多-圣华金(SSJ)河口(美国加利福尼亚州)的几种远洋鱼类种群显着减少之后,进行了一项研究,以使用两栖类Hyalella azteca监测水柱毒性。从2006年1月1日到2007年12月31日,每两周从大三角洲河道和主干河中的15到16个地点采集水样,并根据所关注鱼类的普遍分布模式进行选择。进行了为期十天的实验室测试,以阿兹台克人的存活和相对生长为毒性终点。加入酶抑制剂胡椒基丁醚([PBO],25μg/ L)以分别协同或拮抗拟除虫菊酯或有机磷酸酯(OP)杀虫剂的毒性。在5.6%的环境样品中观察到明显的两栖动物死亡率。 PBO的添加分别显着改变了1.1%和10.1%的环境样品的存活或生长。萨克拉曼多河下游的地点有最多数量的剧毒样品,PBO对两栖动物生长的影响很高(连同南三角洲的地点一样),并且最高的总氨/铵浓度(0.28±0.15 mg / L) 。氨/铵或与它们混合存在的污染物,可能会导致观察到的毒性。拟除虫菊酯类杀虫剂的潜在毒性浓度很高。总体而言,这项研究的结果确定了特定的区域和令人关注的污染物,并表明SSJ北部河口的水有时对敏感的无脊椎动物有剧毒。

著录项

  • 来源
    《Environmental toxicology and chemistry》 |2010年第10期|p.2190-2199|共10页
  • 作者单位

    Aquatic Toxicology Laboratory, Department Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California 95616, USA;

    rnAquatic Toxicology Laboratory, Department Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California 95616, USA;

    rnAquatic Toxicology Laboratory, Department Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California 95616, USA;

    rnAquatic Toxicology Laboratory, Department Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California 95616, USA;

    rnAquatic Toxicology Laboratory, Department Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California 95616, USA;

    rnAquatic Toxicology Laboratory, Department Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California 95616, USA;

    rnAquatic Toxicology Laboratory, Department Anatomy, Physiology and Cell Biology, School of Veterinary Medicine, University of California, Davis, California 95616, USA;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);美国《化学文摘》(CA);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    ambient toxicity; pesticides; ammonia; invertebrates;

    机译:环境毒性;农药氨;无脊椎动物;
  • 入库时间 2022-08-17 13:32:25

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