Vol. 57, 2018
(update: 2018.11.01; 11.20; 2019.03.12)
Repeated and Prolonged Temperature
Anomalies Negate Symbiodiniaceae Genera Shuffling in the Coral Platygyra verweyi (Scleractinia;
Merulinidae)
Kuo-Wei
Kao1,2, Shashank Keshavmurthy1,*, Cing-Hsin Tsao1,2,
Jih-Terng Wang3, and Chaolun Allen Chen1,2,4,*
doi:10.6620/ZS.2018.57-55
1Academia
Sinica, Biodiversity Research Center, Taipei, Taiwan. E-mail:
weberkao@gmail.com (Kao); stevetaso123@gmail.com (Tsao); jtwtaiwan@gmail.com (Wang)
2National Taiwan University, Institute of
Oceanography, Taipei, Taiwan
3Tajen University of Science and Technology, Institute
of Biotechnology, Pingtung, Taiwan
4Academia Sinica, Taiwan International Graduate
Program (TIGP) - Biodiversity, Taipei, Taiwan
(Received 16 May 2018; Accepted 15 October
2018; Communicated by Benny K.K. Chan)
Kuo-Wei
Kao, Shashank Keshavmurthy, Cing-Hsin Tsao, Jih-Terng Wang, and Chaolun
Allen Chen (2018) With
climate change, global average sea surface temperatures are expected to
increase by 1.0-3.7°C by the end of this century. Even a 1.0°C increase
in seawater temperature from local long-term summer maxima lasting for
weeks to months results in bleaching and/or mortality in reef-building
corals. Studies on coral resistance mechanisms have proposed a
correlation between shuffling of different Symbiodiniaceae genera
(changing the dominant Symbiodiniaceae genera) and putative thermal
tolerance in corals. Although it was suggested that some corals can
increase their tolerance by 1.0-1.5°C through shuffling to thermally
tolerant Durusdinium trenchii
(formerly D1a), the effects of accumulated thermal stress due to
prolonged high temperatures on the survival of corals that have
shuffled have not been investigated. We show herein that prolonged
exposure to high temperature (> 10.43 degree heating weeks) can
drastically reduce coral survival rate even after it has shuffled to
stress-tolerant Symbiodiniaceae genera. Our study suggests that there
is a limit to the capacity of for shuffling, and hence is likely to
lose its efficacy in the future as repeated and prolonged thermal
stress events become more frequent and pronounced.
Key words: Climate change, Seawater
temperature fluctuations, Degree of heating weeks, Reciprocal
transplantation, Kenting-Taiwan.
*Correspondence: E-mail: cac@gate.sinica.edu.tw;
coralresearchtaiwan@gmail.com
Erratum notice: Note: The last sentence of the abstract of this article should read "Our
study suggests that there is a limit to the capacity of corals for
shuffling, and hence is likely to lose its efficacy in the future as
repeated and prolonged thermal stress events become more frequent and
pronounced. "
Supplementary
Materials: Fig. S1
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