The effects of acute exposure to cadmium nitrate (CdNO3) on gambusia fish (Gambusia affinis)

International Conference on Science and Technology for Environmental Protection

生态环境科学

Adam, M.A.^1^2 ; Maftuch^1 ; Kilawati, Y.^1 ; Soegianto, A.^3 ; Risjani, Y.^1

Fisheries and Marine Sciences of Faculty, Brawijaya University, Veteran, Malang

65145, Indonesia^1

Academy of Fishery Ibrahimy, Sukorejo, Situbondo

68374, Indonesia^2

Department of Biology, Airlangga University, Surabaya, Indonesia^3

关键词: Acute toxicity test;    Environmental concentration;    Experimental groups;    Histopathological examinations;    Oxidative stress markers;    Pathological changes;    Protease activities;    Specific growth rate;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/259/1/012004/pdf
DOI  :  10.1088/1755-1315/259/1/012004

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

The aim of this study was to assess the impact of cadmium nitrat (CdNO3) in Gambusia affinis on growth and the development of histopathological changes in gill organs and on the activity of some oxidative stress markers during a 96-hours acute toxicity test. Tests were performed on G. affinis. The average initial weight of fish used in the experiment was 3±1.2 g and the average initial total length of fish was 5.21±3.48 mm. The fish were exposed to a range of CdNO3 concentrations (1 mg/L, environmental concentration, 0.1, 0.01, 0.001 nad 0.0001 mg/L) for 96 hours. Each test on a CdNO3-treated group was performed in duplicate. There were no significant differences between the specific growth rates of fish from the test groups and from the control group. Histopathological examination revealed no pathological changes in organs of fish exposed to any CdNO3 concentration. Significantly lower CAT and SOD activity (p3 concentrations of 1, 0.1 and 0.01 mg/L compared to the control group; the control group was observed. H2O2, GSH and GPx exhibited significantly higher activity (p0.05). No significance differences (p>0.05) between the control group and any experimental group were found with respect to Protease activity. The MDA level was significantly higher (p0.05) were observed. According to our results, all tested concentrations of CdNO3, including the environmental concentration, had an inhibit on oxidative stress markers and detoxifying enzymes in exposed fish, but did not affect fish growth or cause the development of histopathological changes in the fish organism.