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Multimodal Optical Microscopy Methods Reveal Polyp Tissue Morphology and Structure in Caribbean Reef Building Corals
Published on: September 5, 2014
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Light-driven phenotypic plasticity in the depth-generalist coral, Pavona varians
Claire J Lewis1,2, Shayle B Matsuda2,3, Tayler L Sale1
1School of Life Sciences, University of Hawai'i at Mānoa, Honolulu, Hawai'i, United States of America.
Plos One
|July 1, 2025
Summary
The coral Pavona varians shows significant growth and adaptation to low-light conditions, suggesting it may benefit from deep reef refugia. This plastic generalist coral demonstrates resilience to changing ocean environments.
Area of Science:
- Marine Biology
- Coral Reef Ecology
- Climate Change Adaptation
Background:
- Climate change alters species distribution and community composition.
- Deep waters offer refugia for corals from heat and light stress.
- Phenotypically plastic corals are crucial for future reef resilience.
Purpose of the Study:
- Investigate the effect of light on the coral Pavona varians.
- Assess growth and trait plasticity across light gradients.
- Model combined effects of light and temperature on coral growth.
Main Methods:
- Common garden experiment with three P. varians genotypes.
- Growth and morphological traits measured under full sun, 75%, and 90% shade.
- Modeling of light and temperature impacts on coral growth.
Main Results:
- P. varians exhibited positive growth in all light treatments.
- Maximal skeletal growth and colony expansion occurred in 90% shade.
- Reduced light enhanced coral growth and potentially light capture, with no change in Symbiodiniaceae communities.
Conclusions:
- Light-associated plasticity enables P. varians to inhabit diverse reef zones.
- This species may mitigate bleaching impacts in reduced light conditions.
- P. varians is predicted to benefit from deep reef refugia.
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