Influence of habitat on abundance, size and growth rate of pikeperch (Sander lucioperca) 0+ juveniles in a canyon‐shaped reservoir

Abstract

Abundance, size (standard length, LS) and growth rate of early pikeperch (Sander lucioperca) 0+ juveniles were monitored in the epipelagic and bathypelagic layers near the dam, and in the middle and upper sections at the canyon‐shaped Římov Reservoir (Czech Republic) during the day on 26 and 29 May, and during the night on 5 and 11 June in 2008. The greatest abundance of 0+ fish was observed in the middle section of the reservoir and their LS increased upstream from the dam towards the reservoir's tributary. Moreover, larger and older pikeperch 0+ juveniles migrated to the bathypelagic layer during the day. The epilimnetic temperature and productivity (expressed as chlorophyll‐a concentration) gradients were suggested as the main drivers affecting the distribution and growth of the fish.

Distribution patterns, annual density changes, growth and mortality of pikeperch [Sander lucioperca (L. 1758)] fry following oligotrophication of a reservoir

“…The same trend of pikeperch fry size following the trophic gradient was observed in the canyon-shaped Římov Reservoir (Blabolil et al, 2023). No obvious trend in pikeperch fry L S was observed along the longitudinal profile of the Lipno Reservoir during the summer, but an increasing trend of fry size from the dam to the upper reservoir part could be expected.…”

Introduction to PERCIS V, the 5th percid international symposium

“…These included the generation of three genome assemblies of P. fluviatilis which will lead to improved understanding of the interactions between ecological and evolutionary processes (Vasemägi et al, 2023). Also spotlighted were geographical and within‐waterbody distribution (in particular those in reservoirs; Blabolil et al, 2023; Sajdlová et al, 2023). Changes in diet, including methods used (gut content and stable isotope analyses) to compare them (Vejříková et al, 2023), and responses to eutrophication or oligotrophication (Jůza et al, 2023), and to invasive species (Jordan et al, 2023; Yang et al, 2023), were outlined.…”

High Mobility and Flexibility in the Habitat Use of Early Juvenile Pikeperch (Sander lucioperca) Based on a Mark-Recapture Experiment

“…[6,10]). Moreover, a recent study demonstrated 0+ pikeperch diurnal vertical migration is size-dependent, as older, larger and more pigmented pikeperch migrate to the bathypelagic layer compared to younger and smaller pikeperch, who stay in the epipelagic layer during the day [22].…”