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Seasonal Toxicity Observed with Amphipods (Eohaustorius estuarius) at Paleta Creek, San Diego Bay, USA.
Environmental Toxicology and Chemistry ( IF 4.1 ) Pub Date : 2019-12-18 , DOI: 10.1002/etc.4619
Nicholas T Hayman 1 , Gunther Rosen 1 , Marienne A Colvin 1 , Bart D Chadwick 2 , Balaji Rao 3 , Dimitrios Athanasiou 3 , Magdalena Rakowska 3 , Ilektra Drygiannaki 3 , G Allen Burton 4 , Danny D Reible 3
Affiliation  

To assess potential impacts on receiving systems, associated with storm water contaminants, laboratory 10-d amphipod (Eohaustorius estuarius) survival toxicity tests were performed using intact sediment cores collected from Paleta Creek (San Diego Bay, CA, USA) on 5 occasions between 2015 and 2017. The approach included deposition-associated sediment particles collected from sediment traps placed at each of 4 locations during the 2015 to 2016 wet seasons. The bioassays demonstrated wet season toxicity, especially closest to the creek mouth, and greater mortality associated with particles deposited in the wet season compared with dry season samples. Grain size analysis of sediment trap material indicated coarser sediment at the mouth of the creek and finer sediment in the outer depositional areas. Contaminant concentrations of metals (Cd, Cu, Hg, Ni, Pb, and Zn) and organic compounds (polycyclic aromatic hydrocarbons [PAHs], polychlorinated biphenyls [PCBs], and pesticides) were quantified to assess possible causes of toxicity. Contaminant concentrations were determined in the top 5 cm of sediment and porewater (using passive samplers). Whereas metals, PAHs, and PCBs were rarely detected at sufficient concentrations to elicit a response, pyrethroid pesticides were highly correlated with amphipod toxicity. Summing individual pyrethroid constituents using a toxic unit approach suggested that toxicity to E. estuarius could be associated with pyrethroids. This unique test design allowed delineation of spatial and temporal differences in toxicity, suggesting that storm water discharge from Paleta Creek may be the source of seasonal toxicity. Environ Toxicol Chem 2019;39:229-239. © 2019 SETAC.

中文翻译:

季节性毒性在美国圣地亚哥湾帕莱塔克里克观察到的两栖类动物(Eohaustorius estuarius)。

为了评估与雨水污染物相关的对接收系统的潜在影响,在2015年之间,使用从Paleta Creek(美国加利福尼亚州圣地亚哥湾)收集的完整沉积物岩心进行了实验室10天双足纲动物(Eohaustorius estuarius)生存毒性测试。和2017年。该方法包括在2015年至2016年的雨季期间,从放置在4个地点的每个地点的沉积物收集器收集与沉积物相关的沉积物颗粒。该生物测定法显示出湿季毒性,尤其是最靠近小溪口的毒性,并且与干季样品相比,湿季沉积的颗粒物具有更高的死亡率。沉积物捕集物质的粒度分析表明,小河口的沉积物较粗,外部沉积区的沉积物较细。金属的污染物浓度(Cd,Cu,Hg,对Ni,Pb和Zn以及有机化合物(多环芳烃[PAHs],多氯联苯[PCBs]和农药)进行了量化,以评估可能的毒性原因。在沉积物和孔隙顶部5 cm处确定污染物浓度(使用被动采样器)。尽管金属,多环芳烃和多氯联苯很少以足够的浓度引起反应,而拟除虫菊酯农药却与两栖动物的毒性高度相关。使用毒性单位方法对拟除虫菊酯的各个成分进行求和表明,对拟除虫菊酯的毒性可能与拟除虫菊酯有关。这种独特的测试设计可以描述毒性的时空差异,这表明从Paleta Creek排出的雨水可能是季节性毒性的来源。Environ Toxicol Chem 2019; 39:229-239。©2019 SETAC。对Pb和Zn以及有机化合物(多环芳烃[PAHs],多氯联苯[PCBs]和农药)进行了量化,以评估可能的毒性原因。在沉积物和孔隙顶部5 cm处确定污染物浓度(使用被动采样器)。尽管金属,多环芳烃和多氯联苯很少以足够的浓度引起反应,而拟除虫菊酯农药却与两栖动物的毒性高度相关。使用毒性单位方法对拟除虫菊酯的各个成分进行求和表明,对拟除虫菊酯的毒性可能与拟除虫菊酯有关。这种独特的测试设计可以描述毒性的时空差异,这表明从Paleta Creek排出的雨水可能是季节性毒性的来源。Environ Toxicol Chem 2019; 39:229-239。©2019 SETAC。对Pb和Zn以及有机化合物(多环芳烃[PAHs],多氯联苯[PCBs]和农药)进行了量化,以评估可能的毒性原因。在沉积物和孔隙顶部5 cm处确定污染物浓度(使用被动采样器)。尽管金属,多环芳烃和多氯联苯很少以足够的浓度引起反应,而拟除虫菊酯农药却与两栖动物的毒性高度相关。使用毒性单位方法对拟除虫菊酯的各个成分进行求和表明,对拟除虫菊酯的毒性可能与拟除虫菊酯有关。这种独特的测试设计可以描述毒性的时空差异,这表明从Paleta Creek排出的雨水可能是季节性毒性的来源。Environ Toxicol Chem 2019; 39:229-239。©2019 SETAC。和锌)和有机化合物(多环芳烃[PAHs],多氯联苯[PCBs]和农药)被量化以评估可能的毒性原因。在沉积物和孔隙水的前5厘米中确定污染物浓度(使用被动采样器)。尽管金属,多环芳烃和多氯联苯很少以足够的浓度引起反应,而拟除虫菊酯农药却与两栖动物的毒性高度相关。使用毒性单位方法对拟除虫菊酯的各个成分进行求和表明,对拟除虫菊酯的毒性可能与拟除虫菊酯有关。这种独特的测试设计可以描述毒性的时空差异,这表明从Paleta Creek排出的雨水可能是季节性毒性的来源。Environ Toxicol Chem 2019; 39:229-239。©2019 SETAC。和锌)和有机化合物(多环芳烃[PAHs],多氯联苯[PCBs]和农药)被量化以评估可能的毒性原因。在沉积物和孔隙顶部5 cm处确定污染物浓度(使用被动采样器)。尽管金属,多环芳烃和多氯联苯很少以足够的浓度引起反应,而拟除虫菊酯农药却与两栖动物的毒性高度相关。使用毒性单位方法对拟除虫菊酯的各个成分进行求和表明,对拟除虫菊酯的毒性可能与拟除虫菊酯有关。这种独特的测试设计可以描述毒性的时空差异,这表明从Paleta Creek排出的雨水可能是季节性毒性的来源。Environ Toxicol Chem 2019; 39:229-239。©2019 SETAC。
更新日期:2019-12-27
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