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首页> 外文期刊>Journal of marine systems: journal of the European Association of Marine Sciences and Techniques >Seasonal dynamics of biomarkers in infaunal clam Macoma balthica from the Gulf of Riga (Baltic Sea)
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Seasonal dynamics of biomarkers in infaunal clam Macoma balthica from the Gulf of Riga (Baltic Sea)

机译：里加湾（波罗的海）的不育蛤MacMacoma balthica中生物标志物的季节性动态

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摘要

Biomarkers are often regarded as "early warning" signals of environmental pollution; however seasonal changes are mentioned as one of the most important factor that influences the activity of biomarkers. The aim of our study was to assess the importance of seasonal variation of selected contaminant biomarkers in Macoma balthica to provide background information for further environmental surveys in the Gulf of Riga. Seasonal variation of biomarkers (acetylcholinesterase (AChE), catalase (CAT), glutathione reductase (GR) and glutathione-S-transferase (GST)) was measured in infaunal clam M. balthica from the southern part of the Gulf of Riga. The majority of biomarkers (GST, CAT and GR) showed strong seasonal variability; however only CAT and GR were found to be significantly related to environmental factors (near-bottom oxygen, salinity and temperature). Integrated biomarker response (IBR) index indicated that the most stressed condition of M. balthica is during August and May. The highest values of IBR were found near the mouth of the River Daugava, suggesting the impact of environmental pollution on the benthic animals.
机译：生物标志物通常被视为环境污染的“预警”信号。然而，季节变化被认为是影响生物标志物活性的最重要因素之一。我们研究的目的是评估在Macoma balthica中选定的污染物生物标志物的季节性变化的重要性，以便为里加湾的进一步环境调查提供背景信息。在里加湾南部的凤头蛤中，测量了生物标志物的季节性变化（乙酰胆碱酯酶（AChE），过氧化氢酶（CAT），谷胱甘肽还原酶（GR）和谷胱甘肽-S-转移酶（GST））。大多数生物标志物（GST，CAT和GR）表现出强烈的季节性变化;然而，仅CAT和GR被发现与环境因素（接近底部的氧气，盐度和温度）显着相关。综合生物标志物反应（IBR）指数表明，M。balthica的最紧张状况是在八月和五月期间。在道加瓦河河口附近发现了最高的IBR值，表明环境污染对底栖动物的影响。

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