Different Sensitivities of Whitefish (Coregonus Lavaretus) and Northern Pike (Esox Lucius) Eleutheroembryos to Photoinduced Toxicity of Polycyclic Aromatic Hydrocarbons

作者：Rasanen Kati M^*; Vehniainen Eeva Riikka; Oikari Aimo O J

来源：Polycyclic Aromatic Compounds, 2011, 31(2): 65-83.

DOI：10.1080/10406638.2011.560236

• PAH
• boreal fish
• eleutheroembryos
• environmental chemicals
• radiation

The photoinduced toxicity of two polycyclic aromatic hydrocarbons (PAHs), retene (RET) and pyrene (PYR), to the eleutheroembryos of whitefish and northern pike was studied. Fish were exposed to three concentrations of RET and PYR, and irradiated with ultraviolet radiation (UVR) or visible light for 3 h on two consecutive days. UVR covered the absorption maxima of RET and PYR at UVB and UVA, the daily UVR doses were 30 and 28 kJ m-2, respectively. After 72 h, mortality and behavioral abnormalities were observed. Survivors were analyzed for the proteins of CYP1A, CYP3A, Hsp70, and the activity of glutathione reductase (GR). While neither PAHs nor UVR on their own were lethal, simultaneous exposure caused mortality. The whitefish were more sensitive than the pike to the photoinduced toxicity, and PYR was much more phototoxic than RET. RET induced Hsp70 in both species, and PYR induced GR without UVR in pike.

• 出版日期2011