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- Title
Promoting larval settlement of coral Pocillopora damicornis by calcium.
- Authors
Yang, Qingsong; Zhang, Wenqian; Zhang, Ying; Tang, Xiaoyu; Ling, Juan; Zhang, Yanying; Dong, Junde
- Abstract
Larval settlement is a critical bottleneck in the process of coral sexual propagation. Promoting coral larval settlement by inducers is a promising strategy in coral reef restoration engineering. In this study, the settlement-promoting effect of Ca2+ on larvae of the brooding coral Pocillopora damicornis was investigated for the first time. Treatment with 40 mM CaCl2 for 24 h effectively promoted coral larval settlement (~ 80%). Moreover, CaCl2 is comparable with the natural inducer, crustose coralline algae (CCA), in both promoting coral larval settlement and post-settlement growth. CaCl2 showed toxic effects on larval survival and growth at high concentrations, and this could be minimized by optimizing CaCl2 concentration and shortening the exposure period. Our study suggests that applying Ca2+ to effectively and efficiently induce coral larval settlement is viable for laboratory research and small-scale aquaculture systems, and it might become a useful tool in future coral reef restoration engineering.
- Subjects
CORAL reef restoration; CORALS; CORALLINE algae; CALCIUM; POISONS
- Publication
Coral Reefs, 2022, Vol 41, Issue 1, p223
- ISSN
0722-4028
- Publication type
Article
- DOI
10.1007/s00338-021-02216-5