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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

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Abstract

Water temperature is a major parameter affecting the growth and distribution of mixotrophic dinoflagellates. To predict the distribution of a mixotrophic dinoflagellate during a global warming period, the dinoflagellate growth rate as a function of water temperature and distribution under current temperature conditions should be explored. The autotrophic and mixotrophic growth and ingestion rates of Biecheleria cincta BCSH1005 feeding on the suitable prey raphidophyte Heterosigma akashiwo at 5–35 °C were determined. Also, the spatiotemporal distributions of B. cincta in Korean coastal waters collected from 27 stations 16 times in 2015–2018 were investigated using the quantitative real-time polymerase chain reaction. The distributions of B. cincta under + 2, + 4, and + 6 °C water temperature conditions were predicted using the results of field observations. At all tested water temperatures, B. cincta did not grow autotrophically. However, B. cincta grew mixotrophically by feeding on H. akashiwo at 15–25 °C, with a maximum growth rate of 0.26 day−1 at 25 °C, but B. cincta did not grow at lower or higher temperatures. In 2015–2018, B. cincta was detected at 3, 8, 5, and 1 stations in spring, summer, autumn, and winter, respectively. Under the + 2, + 4, and + 6 °C conditions, the numbers of stations at which B. cincta was present were predicted to be 6, 5, and 3, respectively, in summer and 5, 5, and 3, respectively, in autumn. However, no change in the number of stations in spring and winter was predicted. Therefore, trophic mode and water temperature may affect the survival and distribution of B. cincta.

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Data collected and analyzed during this study are available from the corresponding author on reasonable request.

Abbreviations

SST:

Sea surface temperature

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Acknowledgements

We thank editors and reviewers for their valuable comments.

Funding

This research was supported by the Useful Dinoflagellate program of the Korea Institute of Marine Science and Technology Promotion (KIMST) funded by the Ministry of Oceans and Fisheries (MOF) and the National Research Foundation of Korea by the Ministry of Science and ICT (NRF-2020M3F6A1110582; NRF-2021M3I6A1091272; NRF-2021R1A2C1093379) award to HJJ and the Development of Useful Materials Derived from Marine Microorganisms and Microalgae (2023M00600) award to NSK.

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JHY and HJJ designed the study conception. JHY and HJJ drafted the manuscript. JHY, HJJ, JHO, HCK, SAP, SHE, SYL, and NSK conducted experiments. JHY, HJJ, SYL, and NSK conducted data analyses. All authors discussed the results.

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Correspondence to Hae Jin Jeong.

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Responsible Editor: S. Shumway .

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You, J.H., Jeong, H.J., Ok, J.H. et al. 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. Mar Biol 170, 15 (2023). https://doi.org/10.1007/s00227-022-04167-z

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  • DOI: https://doi.org/10.1007/s00227-022-04167-z

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