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http://hdl.handle.net/10773/23303
Title: | Red light represses the photophysiology of the scleractinian coral Stylophora pistillata |
Author: | Wijgerde, Tim Van Melis, Anne Silva, Catarina I. F. Leal, Miguel C. Vogels, Luc Mutter, Claudia Osinga, Ronald |
Issue Date: | 2014 |
Publisher: | Public Library of Science |
Abstract: | Light spectrum plays a key role in the biology of symbiotic corals, with blue light resulting in higher coral growth, zooxanthellae density, chlorophyll a content and photosynthesis rates as compared to red light. However, it is still unclear whether these physiological processes are blue-enhanced or red-repressed. This study investigated the individual and combined effects of blue and red light on the health, zooxanthellae density, photophysiology and colouration of the scleractinian coral Stylophora pistillata over 6 weeks. Coral fragments were exposed to blue, red, and combined 50/50% blue red light, at two irradiance levels (128 and 256 μmol m−2 s−1). Light spectrum affected the health/survival, zooxanthellae density, and NDVI (a proxy for chlorophyll a content) of S. pistillata. Blue light resulted in highest survival rates, whereas red light resulted in low survival at 256 μmol m−2 s−1. Blue light also resulted in higher zooxanthellae densities compared to red light at 256 μmol m−2 s−1, and a higher NDVI compared to red and combined blue red light. Overall, our results suggest that red light negatively affects the health, survival, symbiont density and NDVI of S. pistillata, with a dominance of red over blue light for NDVI. |
Peer review: | yes |
URI: | http://hdl.handle.net/10773/23303 |
DOI: | 10.1371/journal.pone.0092781 |
ISSN: | 1932-6203 |
Appears in Collections: | CESAM - Artigos DBio - Artigos |
Files in This Item:
File | Description | Size | Format | |
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Wijgerde et al. - 2014 - Red Light Represses the Photophysiology of the Scl.pdf | 3.07 MB | Adobe PDF | View/Open |
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