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Variation in tissue stoichiometry and condition index of zebra mussels in invaded Swedish lakes
Uppsala universitet, Teknisk-naturvetenskapliga vetenskapsområdet, Biologiska sektionen, Institutionen för ekologi och genetik, Limnologi.
2012 (engelsk)Inngår i: Biological Invasions, ISSN 1387-3547, E-ISSN 1573-1464, Vol. 14, nr 10, s. 2117-2131Artikkel i tidsskrift (Fagfellevurdert) Published
Abstract [en]

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.

sted, utgiver, år, opplag, sider
2012. Vol. 14, nr 10, s. 2117-2131
Emneord [en]
Zebra mussel, Tissue C:N:P stoichiometry, Spatial variation, Condition index, Productivity, Invasion success
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Identifikatorer
URN: urn:nbn:se:uu:diva-181997DOI: 10.1007/s10530-012-0218-9ISI: 000308037700013OAI: oai:DiVA.org:uu-181997DiVA, id: diva2:559459
Tilgjengelig fra: 2012-10-09 Laget: 2012-10-02 Sist oppdatert: 2017-12-07bibliografisk kontrollert

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