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dc.contributor.authorBurian, Alfred
dc.contributor.authorGrosse, Julia
dc.contributor.authorWinder, Monika
dc.contributor.authorBoschker, Henricus T.S.
dc.creatorBurian, A.
dc.date.accessioned2019-12-02T11:08:47Z
dc.date.available2019-12-02T11:08:47Z
dc.date.issued2017-11-14
dc.identifier.citationBurian, A., Grosse, J., Winder, M. and Boschker, H.T., (2018). 'Nutrient deficiencies and the restriction of compensatory mechanisms in copepods'. Functional ecology, 32(3), pp.636-647. DOI: 10.1111/1365-2435.13016en_US
dc.identifier.issn02698463
dc.identifier.doi10.1111/1365-2435.13016
dc.identifier.urihttp://hdl.handle.net/10545/624302
dc.description.abstractThe flexible regulation of feeding behaviour and nutrient metabolism is a prerequisite for consumers to grow and survive under variable food conditions. Thus, it is essential to understand the ecological trade-offs that restrict regulatory mechanisms in consumers to evaluate the consequences of nutrient limitations for trophic interactions. Here, we assessed behavioural and physiological adjustments to nutrient deficiencies in copepods and examined whether energy limitation, food digestibility or co-limitation with a second nutrient restricted compensatory mechanisms. A combination of C-13-labelling and compound-specific stable isotope measurements revealed that copepods compensated nitrogen deficiencies by raising retention efficiencies of amino acids (AA). The costs of higher retention efficiencies were reflected in the doubling of structural fatty acids (FA), probably required for morphological adaptations of the gut. A depletion of highly unsaturated FA in storage lipids and their selective retention suggested that these FA became co-limiting and restricted a further increase in AA retention efficiencies. Copepods feeding on phosphorus-limited algae showed a marked increase in ingestion rates but were not fully able to compensate dietary deficiencies. The increase in ingestion rates was thereby not restricted by higher foraging costs because energy storage in copepods increased. Instead, thicker cell walls of nutrient-limited algae indicated that algal digestion resistance restricted the extent of surplus feeding. The strongly nutrient-specific response of copepods had large implications for recycling rates, growth efficiencies and the potential top-down control at the plant-animal interface. Compensatory mechanisms to mitigate nutrient deficiencies are therefore an essential aspect of trophic interactions and have the potential to alter the structure of food web.en_US
dc.description.sponsorshipFORMASen_US
dc.language.isoenen_US
dc.publisherBritish Ecological Societyen_US
dc.relation.ispartofFunctional Ecology
dc.relation.ispartofseries3en_US
dc.relation.urlhttps://besjournals.onlinelibrary.wiley.com/doi/abs/10.1111/1365-2435.13016en_US
dc.relation.urlhttp://su.diva-portal.org/smash/record.jsf?dswid=2220&pid=diva2%3A1197038&c=8&searchType=RESEARCH&language=en&query=&af=%5B%5D&aq=%5B%5B%7B%22author%22%3A%5B%22Burian%2C+Alfred%22%5D%7D%5D%5D&aq2=%5B%5B%5D%5D&aqe=%5B%5D&noOfRows=50&sortOrder=relevance_sort_desc&sortOrder2=title_sort_asc&onlyFullText=false&sf=allen_US
dc.rightsCC0 1.0 Universal*
dc.rights.urihttp://creativecommons.org/publicdomain/zero/1.0/*
dc.subjectamino aciden_US
dc.subjectco-limitationen_US
dc.subjectcompound-specific stable isotopesen_US
dc.subjectelemental stoichiometryen_US
dc.subjectfatty aciden_US
dc.subjectfood qualityen_US
dc.subjectpredator–prey interactionen_US
dc.subjectzooplanktonen_US
dc.titleNutrient deficiencies and the restriction of compensatory mechanisms in copepodsen_US
dc.typeArticleen_US
dc.contributor.departmentStockholm Universityen_US
dc.contributor.departmentUtrecht Universityen_US
dc.identifier.journalFunctional Ecologyen_US
dc.identifier.eid2-s2.0-85042670095
dc.identifier.scopusidSCOPUS_ID:85042670095
dc.relation.volume32
dcterms.dateAccepted2017-10-10
dc.author.detail785849en_US


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Except where otherwise noted, this item's license is described as CC0 1.0 Universal