Copper exposure reduces production of red carotenoids in a marine copepod

Ryan J. Weaver*, Geoffrey E. Hill, Pou Long Kuan, Yung Che Tseng


研究成果: 雜誌貢獻期刊論文同行評審

13 引文 斯高帕斯(Scopus)


Sub-lethal exposure to copper has been shown to modulate both mitochondrial function and antioxidant gene expression in zooplankton. To date, however, researchers have not identified a quantifiable phenotypic trait that reliably indicates such physiological responses to copper exposure. Red ketocarotenoids are abundant in marine zooplankton serving both physiological and coloration roles, and their production is sensitive to environmental stress. In this study the expression of mitochondrial gene cytochrome c oxidase I (COI) and antioxidant gene glutathione reductase (GR), and the production of red ketocarotenoid, astaxanthin, was measured in response to sub-lethal copper exposure. We found that mRNA of COI and GR was more abundant in copper-exposed copepods than controls, suggesting there was a physiological response to copper exposure. At the same time, copper-exposed copepods produced less astaxanthin than controls. We suggest that ketocarotenoid content of zooplankton has the potential to be a sensitive bioindicator of marine environmental pollution. Understanding how cellular responses to environmental stressors manifest in the phenotypes of marine animals will greatly increase our capacity to monitor marine ecosystem health.

頁(從 - 到)393-400
期刊Ecological Indicators
出版狀態已發佈 - 2016 11月 1

ASJC Scopus subject areas

  • 一般決策科學
  • 生態學、進化論、行為學與系統學
  • 生態學


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