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Seasonal monitoring of cellular energy metabolism in a sentinel species, Dreissena polymorpha (bivalve): Effect of global change?
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-04-05 , DOI: 10.1016/j.scitotenv.2020.138450 Fanny Louis 1 , Béatrice Rocher 2 , Iris Barjhoux 1 , Florence Bultelle 2 , Odile Dedourge-Geffard 1 , Véronique Gaillet 1 , Isabelle Bonnard 1 , Laurence Delahaut 1 , Sandrine Pain-Devin 3 , Alain Geffard 1 , Séverine Paris-Palacios 1 , Elise David 1
Science of the Total Environment ( IF 8.2 ) Pub Date : 2020-04-05 , DOI: 10.1016/j.scitotenv.2020.138450 Fanny Louis 1 , Béatrice Rocher 2 , Iris Barjhoux 1 , Florence Bultelle 2 , Odile Dedourge-Geffard 1 , Véronique Gaillet 1 , Isabelle Bonnard 1 , Laurence Delahaut 1 , Sandrine Pain-Devin 3 , Alain Geffard 1 , Séverine Paris-Palacios 1 , Elise David 1
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Aquatic organisms such as bivalves are particularly sensitive to seasonal fluctuations associated with climate changes. Energy metabolism management is also closely related to environmental fluctuations. Changes in both biotic and abiotic conditions, such as the reproduction status and temperature respectively, may affect the organism energy status. A bivalve sentinel species, Dreissena polymorpha was sampled along its one-year reproduction cycle in situ (2018-2019) to study natural modulations on several markers of energy metabolism regarding seasonal variations in situ. A panel of different processes involved in energy metabolism was monitored through different functions such as energy balance regulation, mitochondrial density, and aerobic/anaerobic metabolism. The typical schema expected was observed in a major part of measured responses. However, the monitored population of D. polymorpha showed signs of metabolism disturbances caused by an external stressor from April 2019. Targeting a major part of energy metabolism functions, a global analysis of responses suggested a putative impact on the mitochondrial respiratory chain due to potential pollution. This study highlighted also the particular relevance of in situ monitoring to investigate the impacts of environmental change on sentinel species.
中文翻译：
季节性监测前哨物种Dreissena polymorpha（双壳类）中的细胞能量代谢：全球变化的影响？
双壳类等水生生物对与气候变化有关的季节性波动特别敏感。能量代谢管理也与环境波动密切相关。生物和非生物条件的变化（例如分别的繁殖状态和温度）可能会影响生物体的能量状态。在其一年的原位繁殖周期（2018-2019）中，对双壳类前哨物种Dreissena polymorpha进行了采样，以研究关于能量代谢的几个标记的自然调节，涉及原位季节变化。通过不同的功能（例如能量平衡调节，线粒体密度和有氧/无氧代谢）来监测参与能量代谢的一系列不同过程。在测得的响应的大部分中观察到了预期的典型方案。但是，从2019年4月开始，监测的多形藻种群显示出由外部应激源引起的代谢紊乱迹象。针对能量代谢功能的主要部分，对反应的整体分析表明，由于潜在的污染，可能对线粒体呼吸链产生影响。 。这项研究还强调了就地监测以调查环境变化对前哨物种的影响的特殊意义。
更新日期：2020-04-06
中文翻译：
季节性监测前哨物种Dreissena polymorpha（双壳类）中的细胞能量代谢：全球变化的影响？
双壳类等水生生物对与气候变化有关的季节性波动特别敏感。能量代谢管理也与环境波动密切相关。生物和非生物条件的变化（例如分别的繁殖状态和温度）可能会影响生物体的能量状态。在其一年的原位繁殖周期（2018-2019）中，对双壳类前哨物种Dreissena polymorpha进行了采样，以研究关于能量代谢的几个标记的自然调节，涉及原位季节变化。通过不同的功能（例如能量平衡调节，线粒体密度和有氧/无氧代谢）来监测参与能量代谢的一系列不同过程。在测得的响应的大部分中观察到了预期的典型方案。但是，从2019年4月开始，监测的多形藻种群显示出由外部应激源引起的代谢紊乱迹象。针对能量代谢功能的主要部分，对反应的整体分析表明，由于潜在的污染，可能对线粒体呼吸链产生影响。 。这项研究还强调了就地监测以调查环境变化对前哨物种的影响的特殊意义。
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