Polychlorinated biphenyls (PCBs) have been monitored in perch (Perca fluviatilis), pike (Esox lucius), and Arctic char (Salvelinus alpinus) in reference lakes since the late 1960s. Temporal trends and spatial patterns are currently monitored in nine and 32 lakes, respectively. Overall, PCB concentrations are decreasing. However, this is not consistent for all congeners across all lakes and spec...

The habitat selected by northern pike, Esox lucius, a solitary top aquatic predator, was evaluated using radio location and ultrasonic telemetry. These predators moved extensively throughout the lake and exhibited a distinct preference for shallow vegetated areas close to shore. Selection of habitat was significantly influenced by meteorological factors. On windy days pike chose habitats which ...

During the last decades, non-native predatory fish species have been largely introduced in European lakes and rivers, calling for detailed information on the trophic ecology of co-existing native and non-native predators. The present study describes the trophic ecology of the introduced pikeperch (Sander lucioperca) in two southwestern French rivers, using stable isotope analysis. Pikeperch cou...

Esox lucius is an economically important freshwater species. Mitochondrial cytb, 12SrRNA, and 16SrRNA gene sequences were used in order to clarify the genetic variation and population structure in three E. Lucius populations, i.e., one Wild population (W) and two hatchery populations (Hatchery Population I-HPI and Hatchery Population II-HPII). A total of 55 individuals, with 19 from wild and 1...

Abstract The aim of this research is to compare the average individual weight four most important fish species in fisheries ( Cyprinus carpio, Silurus glanis, Esox lucius and Sander lucioperca ), caught by angling different parts Sava River catchment Croatia. Significant differences were expressed between counties along catchment, with smallest specimens (p˂0.05) Vukovar-Sirmium county. Artisan...

Eutrophication and reduced grazing have led to an expansion of the common reed (Phragmites australis) in archipelago areas Baltic Sea, while at same time composition submerged vegetation has changed. Although is important as nursery habitat for many fish species, extensive emergent may reduce biodiversity abundance predatory fish. Pike (Esox lucius) a whose larvae young-of-the-year find both fo...