Sandimirov S. Screening studies of POP levels in fish from selected lakes in the Paz watercourse / In State of the environment in the Norwegian, Finnish and Russian border area. The Finnish Environment. Finland, Jyvaskyla: Kopijyva Oy. 2007, №6.

Screening studies o f POPs in fish from the Paz watercourse Rajakoski, whitefish x ф ■o с Ф ra о.с о 100 90 80 70 60 50 40 30 20 10 0 598 599 600 602 604 Males Females Fish numbers Figure 15. Bile acids content in whitefish bile (Rajakoski) Kuetsijarvi, whitefish 120 100 s? * 80 a> 33 a> 60 12 о О 40 20 0 1 1 1 cv> ty ? Cp 1 1 1 1 1 1 1 1 > /Л Л nt* rSp Л Л Males Females Fish numbers Figure 16 Bile acids content in whitefish bile (Kuetsjarvi) The bile acid content in whitefish from Lake Kuetsjarvi and from Rajakoski were characterized by a large range (minimum of Cholate Index 36.82%, maximum - 71.5% (Kuetsjarvi)). The reason for this variability may be the physiological adaptation of the fish to unfavorable conditions. In whitefish bile from the relatively clean region (Rajakoski) a tendency towards Akvaplan-niva report APN 514-3365.02 25