Colimitation of a freshwater herbivore by sterolsand polyunsaturated fatty acids


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MARTIN-CREUZBURG, Dominik, Erik SPERFELD, Alexander WACKER, 2009. Colimitation of a freshwater herbivore by sterolsand polyunsaturated fatty acids. In: Proceedings of the Royal Society B: Biological Sciences. 276(1663), pp. 1805-1814. ISSN 0962-8452. Available under: doi: 10.1098/rspb.2008.1540

@article{MartinCreuzburg2009-05-22Colim-7155, title={Colimitation of a freshwater herbivore by sterolsand polyunsaturated fatty acids}, year={2009}, doi={10.1098/rspb.2008.1540}, number={1663}, volume={276}, issn={0962-8452}, journal={Proceedings of the Royal Society B: Biological Sciences}, pages={1805--1814}, author={Martin-Creuzburg, Dominik and Sperfeld, Erik and Wacker, Alexander} }

<rdf:RDF xmlns:dcterms="" xmlns:dc="" xmlns:rdf="" xmlns:bibo="" xmlns:dspace="" xmlns:foaf="" xmlns:void="" xmlns:xsd="" > <rdf:Description rdf:about=""> <dspace:isPartOfCollection rdf:resource=""/> <foaf:homepage rdf:resource="http://localhost:8080/jspui"/> <void:sparqlEndpoint rdf:resource="http://localhost/fuseki/dspace/sparql"/> <dcterms:abstract xml:lang="eng">Empirical data providing evidence for a colimitation of an herbivore by two or more essential nutrients are scarce, particularly in regard to biochemical resources. Here, a graphical model is presented, which describes the growth of an herbivore in a system with two potentially limiting resources. To verify this model, life-history experiments were conducted with the herbivore Daphnia magna feeding on the picocyanobacterium Synechococcus elongatus, which was supplemented with increasing amounts of cholesterol either in the presence or the absence of saturating amounts of eicosapentaenoic acid (EPA). For comparison, D. magna was raised on diets containing different proportions of S. elongatus and the cholesterol- and EPA-rich eukaryotic alga Nannochloropsis limnetica. Somatic and population growth of D. magna on a sterol- and EPA-deficient diet was initially constrained by the absence of sterols. With increased sterol availability, a colimitation by EPA became apparent and when the sterol requirements were met, the growth-limiting factor was shifted from a limitation by sterols to a limitation by EPA. These data imply that herbivores are frequently limited by two or more essential nutrients simultaneously. Hence, the concept of colimitation has to be incorporated into models assessing nutrient-limited growth kinetics of herbivores to accurately predict demographic changes and population dynamics.</dcterms:abstract> <dc:rights>terms-of-use</dc:rights> <dc:creator>Wacker, Alexander</dc:creator> <dc:contributor>Sperfeld, Erik</dc:contributor> <dc:creator>Sperfeld, Erik</dc:creator> <dc:language>eng</dc:language> <dcterms:title>Colimitation of a freshwater herbivore by sterolsand polyunsaturated fatty acids</dcterms:title> <dc:format>application/pdf</dc:format> <dc:creator>Martin-Creuzburg, Dominik</dc:creator> <dspace:hasBitstream rdf:resource=""/> <dcterms:isPartOf rdf:resource=""/> <dc:contributor>Wacker, Alexander</dc:contributor> <dcterms:issued>2009-05-22</dcterms:issued> <dcterms:bibliographicCitation>First publ. in: Proceedings of the Royal Society : B ; 276 (2009), 1663. - S. 1805 1814</dcterms:bibliographicCitation> <dc:contributor>Martin-Creuzburg, Dominik</dc:contributor> <bibo:uri rdf:resource=""/> <dc:date rdf:datatype="">2011-03-24T17:32:16Z</dc:date> <dcterms:rights rdf:resource=""/> <dcterms:hasPart rdf:resource=""/> </rdf:Description> </rdf:RDF>

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