Biological Invasions

, Volume 14, Issue 10, pp 2117–2131

Variation in tissue stoichiometry and condition index of zebra mussels in invaded Swedish lakes

Authors

    • Department of Aquatic Science and AssessmentSwedish University of Agricultural Sciences
    • Department of Wildlife, Fish and Environmental StudiesSwedish University of Agricultural Sciences
  • Willem Goedkoop
    • Department of Aquatic Science and AssessmentSwedish University of Agricultural Sciences
  • Ulf Grandin
    • Department of Aquatic Science and AssessmentSwedish University of Agricultural Sciences
  • Peter Eklöv
    • Department of Ecology and Genetics/Limnology, Evolutionary Biology CentreUppsala University
Original Paper

DOI: 10.1007/s10530-012-0218-9

Cite this article as:
Naddafi, R., Goedkoop, W., Grandin, U. et al. Biol Invasions (2012) 14: 2117. doi:10.1007/s10530-012-0218-9

Abstract

We examined the spatial variation in carbon:nitrogen:phosphorus (C:N:P) stoichiometry and condition index of the zebra mussel (Dreissena polymorpha), non-indigenous species, in four Swedish lakes with different productivity. Within-lake variability was observed in tissue C:N molar ratios of Dreissena in all lakes and in tissue C:P ratio only in three lakes. Depth had no effect on tissue C:P and N:P ratios of Dreissena. A positive correlation was found between C:N:P stoichiometry of seston and elemental composition of zebra mussel in one of the lakes. Tissue C:N and N:P ratios were the main factors that related to zebra mussel condition index. Zebra mussel condition was positively related to tissue C:N ratio. Smaller Dreissena had higher C:N ratio than larger Dreissena in two of the four lakes. Zebra mussels in the lake with highest productivity had lower C:P and N:P ratios than zebra mussels in the lake with lowest productivity. Our study suggests that the zebra mussel may modify their phosphorus content in relation to lake trophic state, and therefore cope with stoichiometric constraints which may explain the invasion success of this and other related species.

Keywords

Zebra musselTissue C:N:P stoichiometrySpatial variationCondition indexProductivityInvasion success

Copyright information

© Springer Science+Business Media B.V. 2012