Behavioural salinity preference of juvenile yellow perch Perca flavescens (2018)

Christensen, E. A. F., Grosell, M.

Abstract

The present study determined the behavioural salinity preference of a freshwater stock of juvenile yellow perch Perca flavescens acclimated to salinities of 0 and 10. The preferred salinities ranged between 7.3 and 13.0 (mean ± s.d. = 10.4 ± 1.7; n = 13) with no significant effect of acclimation salinity. The results showed that juvenile P. flavescens prefers near isoosmotic salinities, which could be due to a lowered energetic cost of osmoregulation.