The Effects of Zebra Mussels (Dreissena polymorpha) on the Foraging Success of Eurasian Perch (Perca fluviatilis) and Ruffe(Gymnocephalus cernuus)

Dieterich, Axel; Mörtl, Martin; Eckmann, Reiner

The Effects of Zebra Mussels (Dreissena polymorpha) on the Foraging Success of Eurasian Perch (Perca fluviatilis) and Ruffe(Gymnocephalus cernuus)

Files

Dieterich_et_al_IRH_2004.pdf(267.02 KB)

Date

2004

Authors

Dieterich, Axel

Mörtl, Martin

Eckmann, Reiner

Publication type

Journal article

Published in

International Review of Hydrobiology ; 89 (2004), 3. - pp. 229-237. - ISSN 1434-2944. - eISSN 1522-2632

Abstract

Complex habitat structures can influence the foraging success of fish.Competition for food between fish species can therefore depend on the competitors abilities to cope with structural complexity. In laboratory experiments, we comparatively assessed effects of zebra mussels (Dreissena polymorpha PALL.) on the foraging success of Eurasian perch (Perca fluviatilisL.) and ruffe (Gymnocephalus cernuus(L.)). In single-species and mixed-species experiments, the fish were fed caddisfly larvae (Tinodes waeneri (L.)) over complex (mussel-covered stones) and less-complex (bare stones) substrates. With intraspecific competition, food consumption by perch and ruffe decreased significantly when the complex substrate was used. With interspecific competition, food consumption by perch and ruffe did not change with substrate complexity, but perch clearly out-competed ruffe on both substrates. Zebra mussel beds provide a refuge for macrozoobenthos against predation by ruffe and probably also by perch.

Subject (DDC)

570 Biosciences, Biology

Keywords

perch,ruffe,zebra mussel,foraging,habitat complexity,limnologicalinstitute

Cite This

ISO 690

DIETERICH, Axel, Martin MÖRTL, Reiner ECKMANN, 2004. The Effects of Zebra Mussels (Dreissena polymorpha) on the Foraging Success of Eurasian Perch (Perca fluviatilis) and Ruffe(Gymnocephalus cernuus). In: International Review of Hydrobiology. 89(3), pp. 229-237. ISSN 1434-2944. eISSN 1522-2632. Available under: doi: 10.1002/iroh.200310693

BibTex

@article{Dieterich2004Effec-8106,
  year={2004},
  doi={10.1002/iroh.200310693},
  title={The Effects of Zebra Mussels (Dreissena polymorpha) on the Foraging Success of Eurasian Perch (Perca fluviatilis) and Ruffe(Gymnocephalus cernuus)},
  number={3},
  volume={89},
  issn={1434-2944},
  journal={International Review of Hydrobiology},
  pages={229--237},
  author={Dieterich, Axel and Mörtl, Martin and Eckmann, Reiner}
}

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