Investigation of a rotifer (Brachionus calyciflorus) - green alga (Scenedesmus pectinatus) interaction under non- and nutrient-limited conditions

Lürling, Miquel

doi:10.1051/limn/2006007

Cited by 12 publications

(11 citation statements)

References 35 publications

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“…energy or C). This is in support of previous studies demonstrating a direct stoichiometric response on growth rate in this species (Jensen & Verschoors 2004; Lürling 2006). Element limitation implies the possibility of excess C accumulation; considering that rotifers are able to either excrete excess dietary C or store it as body fat (Guisande & Serrano 1989), there is no reason to expect that the excess C accumulation can reach potentially toxic levels.…”

Section: Discussionsupporting

confidence: 93%

Effect of temperature and dietary elemental composition on RNA/protein ratio in a rotifer

et al. 2011

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Summary 1.Temperature and the elemental composition of food are key regulators of consumer growth rate, yet the knowledge on how these factors interact is scarce. In this study, we addressed this issue by using the rotifer Brachionus calyciflorus as a model organism. 2. Rotifers were raised at four different temperatures under a range of C ⁄ P and C ⁄ N ratios in their food and assessed the responses by analysing somatic RNA ⁄ protein ratios as a marker of growth rate. 3. Both N-and P-limited algae restricted the growth rates of rotifers. The interaction between C ⁄ P ratio of a given algae and temperature demonstrated that P limitation became intensified with increasing temperature. 4. Animals that were relieved from N limitation increased their RNA ⁄ protein ratio, as did animals fed on constant C ⁄ N ratio but with P-enriched food. This illustrates a mutual dependency and interaction between N and P in the protein synthesis by up-regulating the biosynthetic machinery, and that even while the effect of N limitation was more pronounced, P limitation was also potentially important in this species. 5. Our results provide evidence that over the tested range of temperature and food qualities, nutrient limitation in these animals was more important than the temperature effect. We also found, however, that increasing temperature can shift from P to N limitation in the consumer.

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Section: Discussionsupporting

confidence: 93%

Effect of temperature and dietary elemental composition on RNA/protein ratio in a rotifer

et al. 2011

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“…Scenedesmus acutus switched from unicellular to colonial (four to eight cells in a colony) upon exposure to the cladoceran grazer Daphnia magna (Lampert et al ., 1994). This work has been extended to other species of Scenedesmus , to Chlorella and to other grazers (Lürling et al ., 1997; Boraas et al ., 1998; Lürling & Van Donk, 2000; Mayeli et al ., 2004; Verschoor et al ., 2004; Lürling, 2006; Verschoor et al ., 2007), showing that the response is relatively widespread, but that the formation of colonies in the presence of grazers does not restrict grazing by all grazers tested, and that the strategy can be undermined by nutrient limitation of the alga. For Phaeocystis and Microcystis there is a much greater range of colony sizes than in Scenedesmus , as there is no fixed number of cells per colony.…”

Section: Trophic Interactionsmentioning

confidence: 99%

Allometry and stoichiometry of unicellular, colonial and multicellular phytoplankton

et al. 2008

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Contents Summary295I.Introduction296II.Unicellular, pseudocolonial, colonial and multicellular phytoplankton: definitions, taxonomy and morphology296III.Symbioses298IV.Physical constraints on size, morphology and motility298V.Elemental stoichiometry302VI.Allometry of specific growth rates and specific metabolic rates302VII.Trophic interactions303VIII.Global significance of large unicells, colonies and multicellular organisms303IX.Significance of colonies and multicellular organisms relative to large unicells in the phytoplankton304Acknowledgements306References306

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“…This enhanced investment in reproduction comes along with reduced storage efficiency at the cost of individual survival (Kirk, 1997;Stelzer, 2001). Although effects of food quality on reproductionrelated processes have been studied previously (Declerck et al, 2015;Lürling, 2006), it is still unclear how food quality affects the trade-off between investment in reproduction and survival. Thus, considering interactive effects of food quantity and quality on population growth, including survival and reproduction, may lead to a better understanding of resource allocation strategies.…”

Section: Introductionmentioning

confidence: 99%

Food quantity–quality co‐limitation: Interactive effects of dietary carbon and essential lipid supply on population growth of a freshwater rotifer

et al. 2019

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Food quantity and quality are highly variable in natural systems. Therefore, their interplay and the associated effects on consumer population growth are important for predator–prey interactions and community dynamics. Experiments in which consumers were exposed to elemental nutrient limitations along food quantity gradients suggest that food quality effects on consumer performance are relevant only at high food quantities. However, elemental nutrients act differently on physiological processes than biochemical nutrients. So far, the interactive effects of food quantity and biochemical compounds on consumer performance have been insufficiently studied. We studied interactive effects of food quantity and biochemical food quality on population growth, including fecundity and survival, of the freshwater rotifer Brachionus calyciflorus. We hypothesised that these life history traits are differently affected by the availability of biochemical nutrients and that food quality effects gain importance with increasing food quantity. In a first experiment, we established food quantity and quality gradients by providing rotifers with different concentrations of a low‐quality food, the sterol‐free cyanobacterium Synechococcus elongatus, supplemented with increasing amounts of cholesterol. In a second experiment, food quantity and quality gradients were established by providing different proportions of two prey species differing in biochemical food quality, i.e. S. elongatus and the lipid‐rich alga Nannochloropsis limnetica, at different total food concentrations. We found that the effects of cholesterol supplementation on population growth increased with increasing food quantity. This interactive effect on population growth was mainly due to food quality effects on fecundity, as effects on survival remained constant along the food quantity gradient. In contrast, when feeding on the mixed algal diet, the food quality effect associated with increasing the proportion of the high‐quality alga did not change along the food quantity gradient. The data on survival and fecundity demonstrate the missing interactive effect of food quantity and quality on population growth, as both traits were oppositely affected. Survival was affected by food quality primarily at low food quantity, whereas food quality effects on fecundity were stronger at high food quantity. Our results highlight the significance of essential biochemicals in mediating the interactive effects of food quantity and quality on population growth. The interplay between food quantity and biochemical food quality limitation seems to influence resource allocation patterns in order to optimise survival or reproduction, which may strongly affect population dynamics in variable environments. As opposed to exploring the function of a single nutrient via supplementation, using algae mixtures allowed us to assess food quality effects on consumer performance in a more natural context by taking potential interactive effects of multiple co‐limiting nutrients into account.

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Investigation of a rotifer (Brachionus calyciflorus) - green alga (Scenedesmus pectinatus) interaction under non- and nutrient-limited conditions

Cited by 12 publications

References 35 publications

Effect of temperature and dietary elemental composition on RNA/protein ratio in a rotifer

Effect of temperature and dietary elemental composition on RNA/protein ratio in a rotifer

Allometry and stoichiometry of unicellular, colonial and multicellular phytoplankton

Food quantity–quality co‐limitation: Interactive effects of dietary carbon and essential lipid supply on population growth of a freshwater rotifer

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