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• W4306403969 endingPage "120" @default.
• W4306403969 startingPage "120" @default.
• W4306403969 abstract "<ns3:p><ns3:bold>Background:</ns3:bold> Mixotrophy, combining phagotrophy and photoautotrophy in order to acquire nutrients and energy, is a widespread trophic mode in marine protist plankton. Acantharia (Radiolaria) are ubiquitous, but still uncultured oceanic protists. Many of them are mixoplanktic by endosymbiotic relations with microalgae. Here we aimed at quantitatively assessing phototrophy (inorganic nutrients) and phagotrophy (organic nutrients) of photosymbiotic Acantharia, to understand their physiology, and thereby improve integrations of mixotrophy into ecological models of oceanic ecosystems.</ns3:p><ns3:p> <ns3:bold>Methods:</ns3:bold> Freshly collected Acantharia were incubated with stable isotopes of inorganic carbon and nitrogen to determine photosynthetic uptake rates. Grazing experiments (prey disappearance) were done with different algal cultures as potential food organisms to measure the contribution of prey ingestion to the acantharian metabolism. Fluorescently (and isotopically) labelled prey was used to verify prey uptake, qualitatively.</ns3:p><ns3:p> <ns3:bold>Results/Conclusions</ns3:bold><ns3:bold>:</ns3:bold> Carbon uptake rates were unaffected by the nitrogen source (<ns3:italic>i.e.</ns3:italic>, nitrate or ammonium). Total carbon inorganic uptake rate was 1112±82 pgC h<ns3:sup>-1</ns3:sup> Acantharia<ns3:sup>‑1</ns3:sup>, 22.3±1.6 pgC h<ns3:sup>-1</ns3:sup> symbiont cell<ns3:sup>-1</ns3:sup>assuming 50 symbionts per Acantharia, at ~155-μmol photons m<ns3:sup>−2 </ns3:sup>s<ns3:sup>−1 </ns3:sup>irradiance. The Acantharia studied could use both inorganic ammonium and nitrate, but ammonium was taken up at a ~5 times higher rate. Prey ingestion of the haptophyte, <ns3:italic>Isochrysis galbana</ns3:italic>, was detected using labelled algae. Significant grazing by Acantharia could only be established on the dinoflagellate <ns3:italic>Effrenium voratum</ns3:italic>,<ns3:italic> </ns3:italic>with a grazing rate of 728 prey Acantharia<ns3:sup>‑1</ns3:sup> hour<ns3:sup>-1</ns3:sup> (<ns3:italic>i.e.</ns3:italic>, ~56.3 ngC h<ns3:sup>-1</ns3:sup>, 46% of total holobiont carbon content) at a ratio of 1.06x10<ns3:sup>4 </ns3:sup>prey predator<ns3:sup>-1</ns3:sup>. Daily photosynthetic carbon uptake rates made up ~14.5% of the total holobiont carbon content (0.9% hourly). The extent to which photosynthates are used and assimilated by the acantharian cell and/or if it is used for catabolic processes to obtain energy is still to be studied. Isotopic ratios further suggests seasonal differences in the usage of each trophic mode.</ns3:p>" @default.
• W4306403969 created "2022-10-17" @default.
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• W4306403969 date "2022-10-17" @default.
• W4306403969 modified "2023-10-17" @default.
• W4306403969 title "Carbon and nitrogen uptake through photosynthesis and feeding by photosymbiotic Acantharia" @default.
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• W4306403969 cites W1946921775 @default.
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• W4306403969 cites W1972173069 @default.
• W4306403969 cites W1976592792 @default.
• W4306403969 cites W1979701036 @default.
• W4306403969 cites W1999563758 @default.
• W4306403969 cites W2000743242 @default.
• W4306403969 cites W2002112200 @default.
• W4306403969 cites W2007736859 @default.
• W4306403969 cites W2009284180 @default.
• W4306403969 cites W2019695874 @default.
• W4306403969 cites W2021361052 @default.
• W4306403969 cites W2030271780 @default.
• W4306403969 cites W2039759499 @default.
• W4306403969 cites W2040299612 @default.
• W4306403969 cites W2041404780 @default.
• W4306403969 cites W2046300636 @default.
• W4306403969 cites W2051068917 @default.
• W4306403969 cites W2059292212 @default.
• W4306403969 cites W2067186899 @default.
• W4306403969 cites W2076467897 @default.
• W4306403969 cites W2078966284 @default.
• W4306403969 cites W2084989601 @default.
• W4306403969 cites W2089425898 @default.
• W4306403969 cites W2092578703 @default.
• W4306403969 cites W2095101020 @default.
• W4306403969 cites W2098748200 @default.
• W4306403969 cites W2100837085 @default.
• W4306403969 cites W2102332733 @default.
• W4306403969 cites W2108062166 @default.
• W4306403969 cites W2112578130 @default.
• W4306403969 cites W2113023092 @default.
• W4306403969 cites W2116262452 @default.
• W4306403969 cites W2122809058 @default.
• W4306403969 cites W2128031015 @default.
• W4306403969 cites W2130235101 @default.
• W4306403969 cites W2131412792 @default.
• W4306403969 cites W2133296737 @default.
• W4306403969 cites W2143182887 @default.
• W4306403969 cites W2144196778 @default.
• W4306403969 cites W2145799438 @default.
• W4306403969 cites W2147373467 @default.
• W4306403969 cites W2156632286 @default.
• W4306403969 cites W2158739559 @default.
• W4306403969 cites W2255161155 @default.
• W4306403969 cites W2288790145 @default.
• W4306403969 cites W2400902311 @default.
• W4306403969 cites W2418030747 @default.
• W4306403969 cites W2565834927 @default.
• W4306403969 cites W2600292565 @default.
• W4306403969 cites W2615499175 @default.
• W4306403969 cites W2738301388 @default.
• W4306403969 cites W2742095478 @default.
• W4306403969 cites W2742611068 @default.
• W4306403969 cites W2766593185 @default.
• W4306403969 cites W2887871945 @default.
• W4306403969 cites W2904330354 @default.
• W4306403969 cites W2909274133 @default.
• W4306403969 cites W2919286804 @default.
• W4306403969 cites W2922037048 @default.
• W4306403969 cites W2948338040 @default.
• W4306403969 cites W2961090083 @default.
• W4306403969 cites W3034315892 @default.
• W4306403969 cites W3035307740 @default.
• W4306403969 cites W3046487448 @default.
• W4306403969 cites W3047398056 @default.
• W4306403969 cites W3094217954 @default.
• W4306403969 cites W3109480869 @default.
• W4306403969 cites W3110907913 @default.
• W4306403969 cites W3130991180 @default.
• W4306403969 cites W3133016522 @default.
• W4306403969 cites W3138064161 @default.
• W4306403969 cites W3173930356 @default.
• W4306403969 cites W3210974603 @default.
• W4306403969 cites W322753937 @default.
• W4306403969 cites W4240593386 @default.
• W4306403969 cites W4245738182 @default.
• W4306403969 cites W4250014022 @default.
• W4306403969 cites W4255229865 @default.
• W4306403969 cites W4291197250 @default.
• W4306403969 cites W594660 @default.
• W4306403969 doi "https://doi.org/10.12688/openreseurope.14983.1" @default.
• W4306403969 hasPublicationYear "2022" @default.
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