TY - GEN A1 - Pilecky, Matthias A1 - Kämmer, Samuel K. A1 - Mathieu-Resuge, Margaux A1 - Wassenaar, Leonard I. A1 - Taipale, Sami J. A1 - Martin-Creuzburg, Dominik T1 - Hydrogen isotopes (δ2H) of polyunsaturated fatty acids track bioconversion by zooplankton T2 - Functional Ecology KW - bioconversion KW - compound-specific stable isotopes Y1 - 2022 UR - https://onlinelibrary.wiley.com/doi/epdf/10.1111/fwb.13888 U6 - https://doi.org/10.1111/1365-2435.13981 SN - 1365-2435 VL - 36 IS - 3 SP - 538 EP - 549 ER - TY - GEN A1 - Isanta-Navarro, Jana A1 - Klauschies, Toni A1 - Wacker, Alexander A1 - Martin-Creuzburg, Dominik T1 - A sterol-mediated gleaner–opportunist trade-off underlies the evolution of grazer resistance to cyanobacteria T2 - Proceedings of the Royal Society : Series B, Biological sciences KW - Toxicity Y1 - 2022 U6 - https://doi.org/10.1098/rspb.2022.0178 SN - 1471-2954 VL - 289 IS - 1974 ER - TY - GEN A1 - Laine, Miikka Benjami A1 - Martin-Creuzburg, Dominik A1 - Litmanen, Jaakko J. A1 - Taipale, Sami J. T1 - Sterol limitation of Daphnia on eukaryotic phytoplankton: A combined supplementation and compound-specific stable isotope labeling approach T2 - Oikos KW - liposomes KW - nutritional ecology KW - stable isotopes Y1 - 2024 UR - https://nsojournals.onlinelibrary.wiley.com/doi/epdf/10.1111/oik.10359 U6 - https://doi.org/10.1111/oik.10359 SN - 1600-0706 SP - 1 EP - 14 ER - TY - GEN A1 - Riehle, Eva A1 - Beach, Daniel G. A1 - Multrus, Selina A1 - Parmar, Tarn Preet A1 - Martin-Creuzburg, Dominik A1 - Dietrich, Daniel R. T1 - Fate of Planktothrix-derived toxins in aquatic food webs: A case study in Lake Mindelsee (Germany) T2 - Ecotoxicology and Environmental Safety KW - Cyanobacteria toxins KW - Trophic transfer KW - Deep chlorophyll maximum Y1 - 2024 U6 - https://doi.org/10.1016/j.ecoenv.2024.116154 SN - 1090-2414 SN - 0147-6513 VL - 273 SP - 1 EP - 13 ER - TY - GEN A1 - Kiene, Marvin A1 - Wacker, Alexander A1 - Martin-Creuzburg, Dominik T1 - Omega-3 versus Omega-6: Are We Underestimating the Ecological Significance of Arachidonic Acid in Aquatic Systems? T2 - Biomolecules N2 - The long-chain polyunsaturated fatty acids (PUFA) eicosapentaenoic acid (EPA, ω-3, or n-3) and arachidonic acid (ARA, ω-6 or n-6) are known to have distinct physiological functions, yet can both support growth and reproduction of consumers, raising the question of whether EPA and ARA are ecologically substitutable dietary resources. We explored the relative importance of EPA and ARA for the growth and reproduction of the freshwater keystone herbivore Daphnia in a life-history experiment. Both PUFA were supplemented in a concentration-dependent manner to a PUFA-free diet, separately and in combination (50% EPA: 50% ARA mixture). The growth-response curves obtained with EPA, ARA, and the mixture were virtually congruent and the thresholds for PUFA limitation did not differ, indicating that EPA (n-3) and ARA (n-6) were substitutable dietary resources under the applied experimental conditions. The actual requirements for EPA and ARA might change with growth conditions, e.g., under the influence of parasites or pathogens. The higher retention of ARA in Daphnia suggests that EPA and ARA are subject to different turnover rates, which also implies different physiological functions. Studies on the ARA requirements of Daphnia could provide valuable information on the presumably underestimated ecological importance of ARA in freshwater food webs. KW - arachidonic acid KW - eicosapentaenoic acid KW - polyunsaturated fatty acids KW - membrane lipids KW - eicosanoids KW - co-limitation KW - Daphnia KW - freshwater food webs KW - limitation KW - ecology Y1 - 2023 U6 - https://doi.org/10.3390/biom13050791 SN - 2218-273X VL - 13 IS - 5 ER -