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首页> 外文期刊>Environmental toxicology and chemistry >Sensitivity of the Marine Calanoid Copepod Pseudodiaptomus pelagicus to Copper, Phenanthrene, and Ammonia
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Sensitivity of the Marine Calanoid Copepod Pseudodiaptomus pelagicus to Copper, Phenanthrene, and Ammonia

机译：海洋Calanoid Copepod Pseudodiaptomus pelagicus对铜，菲和氨的敏感性

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There are limited acute toxicity test methods for native North American marine species that are considered zooplankton for their entire life cycle. Examples of standardized marine zooplankton methods include mussel, bivalve, and echinoderm development tests that use a relatively short-lived planktonic larval stage, chronic life-cycle toxicity tests using epibenthic copepods, and a 24-h Acartia tonsa copepod test method. The objectives of the present study were to: 1) develop and evaluate a novel, 48-h acute toxicity test method using the marine North American copepod Pseudodiaptomus pelagicus that is planktonic for its entire life cycle, and 2) determine the sensitivity of P. pelagicus relative to commonly tested marine toxicity test species. The average (+/- 1 standard deviation) median lethal concentrations (LC50s) for copper (Cu), phenanthrene, and un-ionized ammonia were 32 +/- 15 mu g/L, 161 +/- 51 mu g/L, and 1.08 +/- 0.30 mg NH3/L, respectively. These results placed P. pelagicus on the more sensitive end of Cu and phenanthrene species sensitivity distributions. The copepod was less sensitive to un-ionized ammonia than commonly tested marine species. This finding suggests that the acute P. pelagicus test method will allow a focus on assessing the impacts of persistent contaminants of concern with less confounding impact from naturally occurring ammonia released to the water from sources such as suspended sediments. Environ Toxicol Chem 2019;38:1221-1230. Published 2019 Wiley Periodicals Inc. on behalf of SETAC. This article is a US government work and, as such, is in the public domain in the United States of America.
机译：对于原生北美海洋物种的急性毒性试验方法，被认为是浮游动物的整个生命周期。标准化的海洋浮游生物方法的实例包括使用相对短寿命的血管幼虫阶段的贻贝，双抗体和棘突和棘突癌的试验，使用癫痫桡足类糖尿病患者和24-h acartia坦帕蛋白酶试验方法。本研究的目的是：1）使用海洋北美Copepod Pseudodiaptomus pelagicus的浮游对其整个生命周期的浮鳞，2）产生新的48小时急性毒性测试方法，并确定p的敏感性。 pelagicus相对于常见测试的海洋毒性测试物种。用于铜（Cu），菲和未离子氨的平均（+/- 1标准偏差）中值致命浓度（LC50s）为32 +/-15μg/ L，161 +/-51μg/ L，和1.08 +/- 0.30 mg NH3 / L.这些结果置于Cu和Phenanthrene物种敏感性分布的更敏感端上的pelagicus。 COPEPOD对未经常见的海洋物种的未电离氨敏感。该发现表明，急性P.Pelagicus试验方法将谨慎地注重评估持续污染物对来自天然存在的氨的缺陷污染物的影响，从诸如悬浮的沉积物等来源释放到水中。环境毒素科学2019; 38：1221-1230。发布2019年Wiley期刊Inc.代表Setac。本文是美国政府工作，因此，在美利坚合众国的公共领域。

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