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The study was conducted based on data from lake management books. Pikeperch, Sander lucioperca (L.), was present at various time intervals in 619 lakes in northeastern Poland that covered a total area of 116.2 thousand ha. Based on the frequency of occurrence of this fish species in commercial catches, three categories of habitats were distinguished. The morphologic and morphometric parameters of...
The analyses were based on commercial fisheries records of catches and stocking in lakes in northeastern Poland. The authors described the lake size structure in three categories of pikeperch, Sander lucioperca (L.), habitats determined by the frequency of occurrence of this species in commercial catches. In each of the five lake size classes, the moment pikeperch individuals appeared was pinpointed...
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