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Background. Organochlorine pesticides (OCPs), which act in a similar way to natural hormones, lead to disorders of the endocrine system in animals and humans (endocrine disruptors). Among food products, fish are considered to be the main source of these compounds in the human diet, posing a health risk to consumers. The aim of this study was to determine concentrations in fish and their environment...
The study was completed on the basis of the results of commercial fish catches from lakes in Northeastern Poland. The number and status of the pikeperch lake habitats were determined in 14 river basins in this part of Poland, as recorded in 1951-1994. The river basins differed in the potential of the lakes inhabited by this predatory fish. The highest percentage of such lakes relative to all lakes...
Tagged sea trout (Salmo trutta) from the Vistula (Poland) and Isojoki (Finland) rivers were released into the Vistula River mouth and into the Gulf of Finland outside of the city of Helsinki. Vistula sea trout released into the Vistula River mouth were less frequently caught (75%) in and nearby the place of their release than were Isojoki sea trout released in the same place (92.3%). Finnish sea trout...
Pluszne Lake, with an area of 903 ha and a maximal depth of 52 m, is located in northeastern Poland. It is a typical mesotrophic lake, and its resources of pelagic fish are dominated by vendace and smelt. A Simrad EY-M research echosounder (70 kHz, single beam) and a complementary HADAS computer data analysis system were used for fish distribution and density estimation. Control catches were carried...
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