Good food versus bad food : the role of sterols and polyunsaturated fatty acids in determining growth and reproduction of Daphnia magna

Martin-Creuzburg, Dominik; Elert, Eric von

Good food versus bad food : the role of sterols and polyunsaturated fatty acids in determining growth and reproduction of Daphnia magna

Dateien

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Datum

2009

Autor:innen

Martin-Creuzburg, Dominik

Elert, Eric von

Publikationstyp

Zeitschriftenartikel

unikn.publication.listelement.citation.prefix.version.undefined

Aquatic Ecology. 2009, 43(4), pp. 943-950. ISSN 1386-2588. Available under: doi: 10.1007/s10452-009-9239-6

Zusammenfassung

The absence of dietary sterols and polyunsaturated fatty acids (PUFAs) has been shown to affect the performance of the freshwater herbivore Daphnia. Here, we compared somatic growth rates and clutch sizes of Daphnia magna reared on a diet of low food quality (Synechococcus elongatus) and of high food quality (Cryptomonas sp.) and investigated if and to what extent the absence of sterols or PUFAs in the cyanobacterium S. elongatus accounts for the observed differences in food quality. The supplementation of S. elongatus with cell-free lipid extracts (fatty acids, sterols, total lipids) obtained from the flagellate Cryptomonas sp. suggested that the superior food quality of Cryptomonas sp. is predominantly, but not completely, a combined effect of its sterol and PUFA composition. Our laboratory study suggests that somatic growth of D. magna feeding on S. elongatus is primarily constrained by the absence of sterols, whereas egg production is primarily limited by the absence of long chain PUFAs.

Fachgebiet (DDC)

570 Biowissenschaften, Biologie

Schlagwörter

Sterols, Polyunsaturated fatty acids, Liposomes, Growth, Reproduction

Zitieren

ISO 690

MARTIN-CREUZBURG, Dominik, Eric von ELERT, 2009. Good food versus bad food : the role of sterols and polyunsaturated fatty acids in determining growth and reproduction of Daphnia magna. In: Aquatic Ecology. 2009, 43(4), pp. 943-950. ISSN 1386-2588. Available under: doi: 10.1007/s10452-009-9239-6

BibTex

@article{MartinCreuzburg2009versu-14832,
  year={2009},
  doi={10.1007/s10452-009-9239-6},
  title={Good food versus bad food : the role of sterols and polyunsaturated fatty acids in determining growth and reproduction of Daphnia magna},
  number={4},
  volume={43},
  issn={1386-2588},
  journal={Aquatic Ecology},
  pages={943--950},
  author={Martin-Creuzburg, Dominik and Elert, Eric von}
}

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Universitätsbibliographie

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