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Thermal tolerance of the hermatypic coral Acropora tenuis elucidated by RGB analysis and expression of heat shock proteins in coral and symbiotic dinoflagellates.
- Source :
- Marine Pollution Bulletin; Jan2021, Vol. 162, pN.PAG-N.PAG, 1p
- Publication Year :
- 2021
-
Abstract
- Increased seawater temperature has resulted in mass coral bleaching events globally. Acropora tenuis , the dominant hermatypic coral species in southern Japan, was exposed to four temperature treatments [28 °C, 30 °C, 32 °C, and >32 (=33.3 °C)] for 7 d. The coral colour was converted to R (red), G (green), and B (blue) values, each ranging from 0 (darkest) to 255 (brightest). RGB values exposed to 28 °C and 30 °C decreased slightly, whereas those exposed to 32 °C increased significantly after day 3–6, and those exposed to 33.3 °C changed to white within 2 d. Quantitative RT-PCR analysis revealed no significant changes in heat shock proteins in Acropora and symbiotic dinoflagellates at 28 °C and 30 °C after a 7 d exposure. Our findings revealed that 30 °C, higher than the mean temperature of the warmest month in southern Japan, was an inhabitable temperature for A. tenuis. [ABSTRACT FROM AUTHOR]
- Subjects :
- ACROPORA
CORALS
CORAL bleaching
OCEAN temperature
DINOFLAGELLATES
HEAT shock proteins
Subjects
Details
- Language :
- English
- ISSN :
- 0025326X
- Volume :
- 162
- Database :
- Supplemental Index
- Journal :
- Marine Pollution Bulletin
- Publication Type :
- Academic Journal
- Accession number :
- 148450369
- Full Text :
- https://doi.org/10.1016/j.marpolbul.2020.111812