Effects of temperature on the autotrophic and mixotrophic growth rates of the dinoflagellate Biecheleria cincta and its spatiotemporal distributions under current temperature and global warming conditions

You, Ji Hyun; Jeong, Hae Jin; Ok, Jin Hee; Kang, Hee Chang; Park, Sang Ah; Eom, Se Hee; Lee, Sung Yeon; Kang, Nam Seon

doi:10.1007/s00227-022-04167-z

Cited by 4 publications

(2 citation statements)

References 73 publications

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“…Polykrikos (OTU-04) also increased with Bunker C in Exp2 and may have contributed to the observed decrease in phytoplankton through grazing (Matsuyama et al, 1999;Lee et al, 2015). Biecheleria (OTU-31), the third dinoflagellate, was relatively constant over the experiments, with a slight decrease at I2, but as a mixotroph, may also have exerted grazing pressure on the prokaryote and phytoplankton communities (You et al, 2023); however, Biecheleria is also known prey item for Polykrikos (Yoo et al, 2013), highlighting the complexity of interactions in the marine microbial communities. In Exp1, Chaetoceros, a diatom, had higher relative abundances in both the Bunker C and the Heidrun enclosures at I2 compared to the control enclosures.…”

Section: Microeukaryote Communitiesmentioning

confidence: 98%

Rapid dilution effectively decreases hydrocarbons following small oil spills, but impacts on microeukaryote communities are still observed

Ortmann,

Poon,

et al. 2024

Front. Mar. Sci.

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Dilution affects the distribution and weathering of oil following a spill into coastal seawater, but including dilution in experiments is rare. In open water, dilution is expected to rapidly reduce the concentrations of hydrocarbons, and estimates of impacts and microbial responses from batch experiments may overestimate what happens during a spill event. Three experiments carried out in the southern Gulf of St. Lawrence incorporated periods of incubation of natural microbial communities with either Heidrun medium crude or Bunker C fuel oil followed by dilutions using unexposed seawater. Higher concentrations of n-alkanes (C10 – C35) in Heidrun, resulted in higher initial total hydrocarbon concentrations in incubations with Heidrun compared to Bunker C. Similar polycyclic aromatic hydrocarbon concentrations and potential toxicity were measured in the water column for both oils. Dilution effectively decreased the hydrocarbon concentrations, reducing them to background levels after two dilutions (13.8-fold). Neither the abundance nor the diversity of the prokaryote community was strongly affected by the addition of oil. The natural coastal microbiome was dominated by bacteria that may be facultative hydrocarbon degraders. The abundance of phytoplankton and the diversity of the microeukaryote community decreased during the second incubation in response to both Heidrun and Bunker C, potentially due to photooxidative byproducts produced under full sunlight. Dilution appears to limit the bacterial response to oil, but low hydrocarbon concentrations may still be linked to impacts on the microeukaryote community.

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Section: Microeukaryote Communitiesmentioning

confidence: 98%

Rapid dilution effectively decreases hydrocarbons following small oil spills, but impacts on microeukaryote communities are still observed

Ortmann,

Poon,

et al. 2024

Front. Mar. Sci.

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“…ESD, equivalent spherical diameter (µm); IPC, initial prey concentration (×10 3 cells or particles mL -1 ); Y, the Scrippsiella species fed on prey; N, the Scrippsiella species did not feed on prey; -, not available. tions as described by You et al (2023). The PCR products were purified using an AccuPrep DNA Purification Kit (Bioneer) and then sequenced using an ABI 3730XL DNA Analyzer (Applied Biosystems, Foster City, CA, USA).…”

Section: This Studymentioning

confidence: 99%

Five phototrophic <italic>Scrippsiella</italic> species lacking mixotrophic ability and the extended prey spectrum of <italic>Scrippsiella acuminata</italic> (Thoracosphaerales, Dinophyceae)

You¹,

Ok²,

Kang³

et al. 2023

Algae

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Mixotrophic dinoflagellates act as primary producers, prey, and predators in marine planktonic food webs, whereas exclusively autotrophic dinoflagellates are primary producers and prey. Species of the dinoflagellate genus Scrippsiella are commonly found in marine ecosystems and sometimes cause harmful red tides. Among the 28 formally described Scrippsiella species, S. acuminata has been found to be mixotrophic and two unidentified species have been found to be mixotrophic. To determine whether the other species in this genus are similarly mixotrophic, the mixotrophic ability of S. donghaiensis SDGJ1703, S. lachrymosa SLBS1703, S. masanensis SSMS0908, S. plana SSSH1009A, and S. ramonii VGO1053 was explored using 15 potential prey items, including 2-µm fluorescently labeled microspheres (FLM) and heterotrophic bacteria (FLB), the cyanobacterium Synechococcus sp., and various microalgal prey species. The ability of S. acuminata to feed on FLM and FLB was also investigated. We found that S. donghaiensis, S. lachrymosa, S. masanensis, S. plana, and S. ramonii did not feed on any potential prey tested in this study, indicating a lack of mixotrophy. However, S. acuminata fed on both FLM and FLB, confirming its mixotrophic ability. These results lowered the proportion of mixotrophic species relative to the total number of tested Scrippsiella species for mixotrophy from 100% to 29–38%. Owing to its mixotrophic ability, S. acuminata occupies an ecological niche that is distinct from that of S. donghaiensis, S. lachrymosa, S. masanensis, S. plana, and S. ramonii.

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Combined effects of hypoxia and starvation on the survival and growth rates of autotrophic, mixotrophic, and heterotrophic dinoflagellates

Eom,

Jeong,

et al. 2023

Mar Biol

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Effects of temperature on the autotrophic and mixotrophic growth rates of the dinoflagellate Biecheleria cincta and its spatiotemporal distributions under current temperature and global warming conditions

Cited by 4 publications

References 73 publications

Rapid dilution effectively decreases hydrocarbons following small oil spills, but impacts on microeukaryote communities are still observed

Rapid dilution effectively decreases hydrocarbons following small oil spills, but impacts on microeukaryote communities are still observed

Five phototrophic <italic>Scrippsiella</italic> species lacking mixotrophic ability and the extended prey spectrum of <italic>Scrippsiella acuminata</italic> (Thoracosphaerales, Dinophyceae)

Combined effects of hypoxia and starvation on the survival and growth rates of autotrophic, mixotrophic, and heterotrophic dinoflagellates

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