Peculiarities of mercury content in the muscle tissue of fish of the Vologda Region

Mercury is one of the most dangerous toxicants for all living organisms, having a high degree biomagnification. The determination mercury concentration in different species fish important evaluation state aquatic ecosystems. aim research study peculiarities content Sheksna Reservoir, Sukhona River, Kubenskoye, Borovskoye and Svyatoye lakes. muscles Vologda Region varies from 0.0397 mg/kg to 1.167 wet mass. highest average established muscle tissue river bass (0.477±0.202), lowest eastern bream (0.133±0.082). level does not exceed maximum permissible heavy metal weekly norm, harmless person weighing 70 kg examined specimens. Сomparison surveyed water bodies showed significant difference between non-piscivorous species, as well individuals We also revealed reliable correlation dependence on mass length body samples bass, northern pike silver bream. Values Lake Kubenskoye Reservoir vary process time.