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

Authors
Eom, Se HeeJeong, Hae JinOk, Jin HeePark, Sang AhKang, Hee ChangYou, Ji Hyun
Issue Date
Dec-2023
Publisher
Springer Verlag
Keywords
Anoxic condition; Deoxygenation; Global warming; Harmful algal bloom; Protist; Red tide
Citation
Marine Biology, v.171, no.2, pp 1 - 16
Pages
16
Indexed
SCIE
SCOPUS
Journal Title
Marine Biology
Volume
171
Number
2
Start Page
1
End Page
16
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/118779
DOI
10.1007/s00227-023-04363-5
ISSN
0025-3162
1432-1793
Abstract
Global warming is exacerbating coastal hypoxia by intensifying stratification. Marine hypoxia often causes large-scale mortality of fish, shellfish, and mammals. However, there have only been a few studies on the effect of hypoxia on dinoflagellate survival. Here, we explored the hypoxic effects on the growth rates of dinoflagellates with different trophic modes: autotrophic Alexandrium fraterculus and Scrippsiella lachrymosa; mixotrophic Alexandrium pohangense, Gymnodinium smaydae, and Shimiella gracilenta; and heterotrophic Gyrodinium dominans and Protoperidinium pellucidum. Additionally, we tested feeding as a tactic to reduce hypoxia-induced mortality. Hypoxia reduced the growth rates of all the tested species. However, feeding suitable prey to A. pohangense, G. smaydae, S. gracilenta, G. dominans, and P. pellucidum reduced their mortality due to hypoxia. Furthermore, feeding enabled A. pohangense and G. dominans to survive under hypoxic conditions. Therefore, feeding could be used as a strategy for survival and reduction of mortality in mixotrophic and heterotrophic dinoflagellates against hypoxia. © 2023, The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature.
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COLLEGE OF SCIENCE AND CONVERGENCE TECHNOLOGY > DEPARTMENT OF MARINE SCIENCE AND CONVERGENCE ENGINEERING > 1. Journal Articles

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