Differences in heat tolerance within a Daphnia magna population: the significance of body PUFA content

Werner, Christian W.; Ilić, Maja; Elert, Eric von

doi:10.1007/s10750-018-3769-7

Cited by 14 publications

(15 citation statements)

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“…It is important to note, however, that our findings are restricted to only one genotype per species. As shown in previous studies, intraspecific differences in response to PUFA‐deficiency and in the body content of single ω3‐PUFAs (e.g., EPA) might occur (Brzeziński and von Elert ; Sikora et al ; Werner et al ). It will be necessary to test more genotypes per Daphnia species to draw further conclusions on the strength of the effect of insufficient EPA and ARA availability for the fitness of different Daphnia species.…”

Section: Discussionmentioning

confidence: 71%

Equal relevance of omega‐3 and omega‐6 polyunsaturated fatty acids for the fitness of Daphnia spp.

Ilić

Werner

Fink

2019

Limnology & Oceanography

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Essential polyunsaturated fatty acids (PUFAs) have been recognized as a crucial factor that determines the trophic transfer efficiency in plankton communities. As many animals cannot synthesize the classes of ω3‐ and ω6‐PUFAs, the dietary availability of these PUFAs can constrain the fitness of freshwater zooplankton such as Daphnia spp. In particular, eicosapentaenoic acid (EPA, 20:5ω3) is considered to be a crucial determinant of the transfer of biomass at the freshwater plant‐herbivore interface. In contrast to ω3‐PUFAs, the group of ω6‐PUFAs has previously been considered to be of less ecological relevance, although the potential role of the ω6‐PUFA arachidonic acid (ARA, 20:4ω6) remains controversial. To investigate its potential role, we conducted dose‐response growth experiments with two Daphnia species, D. pulex and D. magna, supplemented with EPA or ARA, which allowed us to calculate EPA and ARA saturation thresholds for growth and reproduction of both Daphnia species. Our results provide evidence that not only the availability of ω3‐PUFAs, but also the availability of a ω6‐PUFA, namely ARA, can limit both the growth and reproduction of Daphnia spp. to an equal extent. The saturation thresholds for growth and reproduction were consistently, but not significantly, higher for EPA than for ARA in both Daphnia species. As shifts in phytoplankton community composition might result in environmental fluctuations in the dietary availability of ω3‐ and ω6‐PUFAs, our findings present a significant step in understanding the consequences of the ongoing global biodiversity loss for trophic transfer efficiency at the phytoplankton‐zooplankton interface.

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Section: Discussionmentioning

confidence: 71%

Equal relevance of omega‐3 and omega‐6 polyunsaturated fatty acids for the fitness of Daphnia spp.

Ilić

Werner

Fink

2019

Limnology & Oceanography

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“…Recently, Werner et al. (2018) reported intraspecific variation in heat tolerance within a natural D. magna population. Furthermore, previous research has found that Daphnia show interclonal variation in their response to varying food quality, both in terms of nutrient stoichiometry (Weider et al., 2005) and dietary fatty acid availability, in particular to the dietary availability of EPA (Brzeziński et al., 2010; Brzeziński & von Elert, 2007).…”

Section: Discussionmentioning

confidence: 99%

“…Bu et al, 2017;Eichenberg et al, 2015) and aquatic ecosystems (e.g. De Bruin et al, 2004;Werner et al, 2018). For example, White et al (2011) documented an intraspecific variation in vulnerability of co-occurring genotypes of the toxic and colony-forming cyanobacterium Microcystis aeruginosa to herbivory by the filter-feeding zebra mussel Dreissena polymorpha.…”

Section: Introductionmentioning

confidence: 99%

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Intrapopulation variability in a functional trait: Susceptibility ofDaphniato limitation by dietary fatty acids

2020

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“…Werner et al here show that body content of polyunsaturated fatty acids (PUFAs) varied among a D. magna population and was negatively correlated with heat tolerance. This variation in PUFA content is hypothesized to affect fish-induced diel vertical migration amplitudes (Werner et al, 2018). Fink & Windisch detail differential gene expression involved in the physiological pathways associated with the nutritionally highly important omega-3 PUFAs (Fink & Windisch, 2018).…”

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confidence: 99%

Preface: Blasts from the past and back to the future

2019

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Following the kind invitation of the organizers Christian Laforsch and Max Rabus, the 11th International Symposium on Cladocera gathered scientists from all over the world working on multidisciplinary aspects of Cladoceran biology. The meeting is renowned to house Cladoceran research from multiple disciplines including evolutionary history, host-parasite and predator-prey interactions, phylogeny, environmental genomics, population genetics, biogeography, systematics, and taxonomy. First being held in 1986 in Hungary, this meeting recurs every 3 years. The 11th meeting was held in Kulmbach, Germany, from September the 24th to the 29th, 2017, in the wonderful Plassenburg Castle in the margravial city of Kulmbach, Germany. During this 1 week, scientists from all around the globe coming from Austria,

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Differences in heat tolerance within a Daphnia magna population: the significance of body PUFA content

Cited by 14 publications

References 40 publications

Equal relevance of omega‐3 and omega‐6 polyunsaturated fatty acids for the fitness of Daphnia spp.

Equal relevance of omega‐3 and omega‐6 polyunsaturated fatty acids for the fitness of Daphnia spp.

Intrapopulation variability in a functional trait: Susceptibility ofDaphniato limitation by dietary fatty acids

Preface: Blasts from the past and back to the future

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