Diet shifts and food selection of perch Perca fluviatilis and roach Rutilus rutilus in humic lakes of varying water colour

Journal of Fish Biology
S EstlanderH Lehtonen

Abstract

The field data from four humic lakes suggested that water colour may have both direct and indirect effects on inter- and intra-specific interactions of perch Perca fluviatilis and roach Rutilus rutilus. The results agree with suggestions that, compared with R. rutilus, P. fluviatilis may be an inferior forager on zooplankton in highly coloured water. As an indirect effect, water colour decreases the coverage of macrophytes and limits suitable littoral habitats, benefiting R. rutilus over P. fluviatilis. Perca fluviatilis benefiting from complex habitats does not have the advantage in macrophyte-poor highly coloured water.

Citations

Aug 19, 2015·The Science of the Total Environment·Ursula StrandbergPaula Kankaala
Jul 28, 2016·The Science of the Total Environment·Alexander FecklerMirco Bundschuh
May 10, 2017·PloS One·Ivana VejříkováJiří Peterka
Dec 31, 2016·Ecology and Evolution·Zeynep Pekcan-HekimJukka Horppila
Dec 21, 2018·Global Change Biology·Renee M van DorstMagnus Huss

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