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Behavioural salinity preference of juvenile yellow perch Perca flavescens |
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| Authors: | E A F Christensen M Grosell |
| Institution: | 1. Marine Biological Section, Department of Biology, University of Copenhagen, Strandpromenaden 5, 3000 Helsing?r, Denmark;2. Department of Marine Biology and Ecology, Rosenstiel School of Marine and Atmospheric Science, University of Miami, 4600 Rickenbacker Causeway, Miami, Florida 33149, U.S.A. |
| 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. |
| Keywords: | brackish water choice tank osmoregulation Perca flavescens salinity |