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Self-recognition in corals facilitates deep-sea habitat engineering
S J Hennige1, C L Morrison2, A U Form3
1Centre for Marine Biodiversity and Biotechnology, Heriot-Watt University, Edinburgh, EH14 4AS, Scotland.
Scientific Reports
|October 28, 2014
Summary
Cold-water corals like Lophelia pertusa fuse skeletons, creating vital deep-sea habitats. This fusion, enabled by molecular bonding and crystal structure, allows for ecosystem engineering without mortality.
Area of Science:
- Marine Biology
- Ecology
- Geology
Background:
- Coral reefs engineer complex 3D habitats, supporting rich biodiversity.
- Tropical reefs use coralline algae for structure; cold-water corals like Lophelia pertusa form reefs via skeletal fusion.
Purpose of the Study:
- To investigate the mechanisms and implications of skeletal fusion in Lophelia pertusa.
- To understand the 'self-recognition' process in cold-water corals and its role in ecosystem engineering.
Main Methods:
- Analysis of skeletal fusion sites in Lophelia pertusa.
- Examination of crystal structure (aragonite), crystal organization, and molecular bonding at fusion points.
- Observation of colony interactions and mortality rates.
Main Results:
- Identified 'flawless' skeletal fusion areas in Lophelia pertusa.
- Fusion sites characterized by small aragonitic crystals, low crystal organization, and strong molecular bonding.
- Fusion facilitates ecosystem engineering and reduces energy expenditure, with no observed mortality due to self-recognition.
Conclusions:
- Species-level self-recognition and skeletal fusion are crucial for Lophelia pertusa.
- This process enables effective ecosystem engineering in deep-sea environments.
- Understanding this mechanism is key to appreciating the ecological role of cold-water corals globally.
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