In the Baltic Sea, large predatory fish northern pike (Esox lucius L.) is important for both recreational fisheries and ecosystem functioning. As existing fishery-independent surveys do not adequately monitor populations, a general lack of knowledge on population status trends poses challenges management. Here we use angling data as an alternative method to describe development along Swedish Se...

The purpose of the work was to conduct a morphobiological analysis common pike (Esox lucius L.) from two reservoirs similar in their parameters and conditions, determine difference between populations these species due various anthropogenic factors. Sumy region has more slender body, as it is indicated by displaced dorsal (5.76) anal fins (9.19), larger body width (2.47) an enlarged tail stem (...