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Article

Taxonomy and Physiology of Oxyrrhis marina and Oxyrrhis maritima in Korean Waters

by 1, 1, 2, 2,* and 1,*
1
Climate Change Research Laboratory, Advanced Institute of Convergence Technology, Suwon 16229, Korea
2
Environment and Resource Convergence Center, Advanced Institute of Convergence Technology, Suwon 16229, Korea
*
Authors to whom correspondence should be addressed.
Academic Editors: Zita Gasiunaite, Piotr Margonski and Javier Gilabert
Water 2021, 13(15), 2057; https://doi.org/10.3390/w13152057
Received: 10 June 2021 / Revised: 12 July 2021 / Accepted: 19 July 2021 / Published: 28 July 2021
(This article belongs to the Special Issue Plankton Ecology in Shallow Coastal Waters)
The genus Oxyrrhis is a heterotrophic dinoflagellate found in diverse marine environments. Oxyrrhis spp. have received attention owing to their ecological and industrial importance, high lipid contents, and docosahexaenoic acid formation. To the best of our knowledge, contrary to O. marina, ecophysiological characterization studies on O. maritima have not yet been reported. Therefore, we investigated the taxonomy and ecophysiology of four strains of O. marina from coastal waters and two strains of O. maritima from the littoral tidepool waters of Korea. Based on phylogenetic trees constructed using internal transcribed spacer ribosomal DNA (ITS rDNA) and SSU rDNA of dinoflagellates, the clade of all four O. marina strains was divergent from that of the two O. maritima strains. We measured the growth rates of both species at various water temperatures (10–36 °C), salinities (5–90), and light intensities (0–100 µE·m−2·s−1). The lowest (O. marina and O. maritima: 10 °C) and highest temperatures (O. marina: <35 °C, O. maritima: >35 °C) revealed that O. maritima has more tolerance to high salinity. This study provides a basis for understanding the ecophysiology of O. marina and O. maritima and their population dynamics in marine ecosystems. View Full-Text
Keywords: heterotrophic dinoflagellates; Korean waters; Oxyrrhis; physiology; taxonomy heterotrophic dinoflagellates; Korean waters; Oxyrrhis; physiology; taxonomy
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MDPI and ACS Style

Jung, M.K.; Yin, T.Y.; Moon, S.J.; Park, J.; Yoon, E.Y. Taxonomy and Physiology of Oxyrrhis marina and Oxyrrhis maritima in Korean Waters. Water 2021, 13, 2057. https://doi.org/10.3390/w13152057

AMA Style

Jung MK, Yin TY, Moon SJ, Park J, Yoon EY. Taxonomy and Physiology of Oxyrrhis marina and Oxyrrhis maritima in Korean Waters. Water. 2021; 13(15):2057. https://doi.org/10.3390/w13152057

Chicago/Turabian Style

Jung, Min K., Tae Y. Yin, Seung J. Moon, Jaeyeon Park, and Eun Y. Yoon. 2021. "Taxonomy and Physiology of Oxyrrhis marina and Oxyrrhis maritima in Korean Waters" Water 13, no. 15: 2057. https://doi.org/10.3390/w13152057

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