TY  - JOUR
A1  - Denoux, Clemence
A1  - Martin-Creuzburg, Dominik
A1  - Koussoroplis, Apostolos-Manuel
A1  - Perriere, Fanny
A1  - Desvillettes, Christian
A1  - Bourdier, Gilles
A1  - Bec, Alexandre
T1  - Phospholipid-bound eicosapentaenoic acid (EPA) supports higher fecundity than free EPA in Daphnia magna
JF  - Journal of plankton research
N2  - Nutrition bioassays in which polyunsaturated fatty acids (PUFA)-deficient diets were supplemented with free long-chain PUFA (>= C20) consistently revealed positive effects on somatic growth and fecundity of Daphnia. However, free PUFA are hardly available in natural diets. In general, PUFA are bound to other lipids, especially to phospholipids and triglycerides. Here, we evaluate the potential of free and phospholipid-bound dietary eicosapentaenoic acid (EPA) to support somatic growth and fecundity of Daphnia magna. In a growth experiment, supplementation of a C20 PUFA-deficient diet with free or phospholipid-bound EPA improved somatic growth rates of D. magna equally. However, the increase in fecundity was significantly more pronounced when phospholipid-bound EPA was provided. Free and phospholipid-bound EPA were provided in the same concentrations in our experiment, suggesting that the allocation to reproduction-related processes is affected differently by phospholipid-bound PUFA and free PUFA. Our finding stresses the need to consider the distribution of dietary PUFA in different lipid classes to gain a better understanding of how PUFA influence life history traits of Daphnids in the field.
KW  - Daphnia magna
KW  - food quality
KW  - phospholipids
KW  - polyunsaturated fatty acids
KW  - reproduction
KW  - somatic growth
KW  - trophic interactions
Y1  - 2017
U6  - https://doi.org/10.1093/plankt/fbx037
SN  - 0142-7873
SN  - 1464-3774
VL  - 39
SP  - 843
EP  - 848
PB  - Oxford Univ. Press
CY  - Oxford
ER  -