Cu toxicity on growth and chlorophyll-a of Chaetoceros sp.

Global Colloquium on GeoSciences and Engineering 2017

Puspitasari, R.^1 ; Suratno^1 ; Purbonegoro, T.^1 ; Agustin, A.T.^2

Research Center for Oceanography, Indonesian Institute of Sciences, Jakarta, Indonesia^1

Gadjah Mada University, Yogyakarta, Indonesia^2

关键词: Aquatic life;    Cell size;    Cell walls;    Chlorophyll a;    Essential nutrients;    Inhibition concentrations;    Micro-algae;    Primary producers;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/118/1/012061/pdf
DOI  :  10.1088/1755-1315/118/1/012061

来源: IOP

【 摘 要 】

Phytoplankton is a primary producer in marine aquatic ecosystem. Their sensitivity to metal makes them important to study to predict the environmental impact of pollution. Copper is an essential nutrient for aquatic life as micronutrients on an organism but toxic at high levels. The focus of this study was to assess the toxicity of copper to Chaetoceros sp. on growth and chlorophyll-a content. The result shows that inhibition concentration (IC50) of copper on the microalgae, Chaetoceros sp. was 30.25 μg L-1. Growth of Chaetoceros sp. decreased 16.84% in 16 μg L-1and 81.97% in 44 μg L-1. Chlorophyll-a content decreased dramatically at 44 μg L-1compared to control. Increase of the cell size, deformation of cell wall and loss of setae were observed at higher concentration of copper.