Assessing acute thermal assays as a rapid screening tool for coral restoration.

Autor: Klepac CN; Mote Marine Laboratory, International Center for Coral Reef Research and Restoration, Summerland Key, FL, USA. cklepac@stanford.edu.; Hopkins Marine Station, Stanford University, Pacific Grove, CA, USA. cklepac@stanford.edu., Petrik CG; Mote Marine Laboratory, International Center for Coral Reef Research and Restoration, Summerland Key, FL, USA.; National Coral Reef Institute, Nova Southeastern University, Dania Beach, FL, USA., Karabelas E; Mote Marine Laboratory, International Center for Coral Reef Research and Restoration, Summerland Key, FL, USA.; Hopkins Marine Station, Stanford University, Pacific Grove, CA, USA., Owens J; Mote Marine Laboratory, International Center for Coral Reef Research and Restoration, Summerland Key, FL, USA.; Tufts University, Worcester, MA, USA., Hall ER; Mote Marine Laboratory, International Center for Coral Reef Research and Restoration, Summerland Key, FL, USA.; Mote Marine Laboratory, Sarasota, FL, USA., Muller EM; Mote Marine Laboratory, International Center for Coral Reef Research and Restoration, Summerland Key, FL, USA.; Mote Marine Laboratory, Sarasota, FL, USA.
Jazyk: angličtina
Zdroj: Scientific reports [Sci Rep] 2024 Jan 22; Vol. 14 (1), pp. 1898. Date of Electronic Publication: 2024 Jan 22.
DOI: 10.1038/s41598-024-51944-5
Abstrakt: Escalating environmental threats to coral reefs coincides with global advancements in coral restoration programs. To improve long-term efficacy, practitioners must consider incorporating genotypes resilient to ocean warming and disease while maintaining genetic diversity. Identifying such genotypes typically occurs under long-term exposures that mimic natural stressors, but these experiments can be time-consuming, costly, and introduce tank effects, hindering scalability for hundreds of nursery genotypes used for outplanting. Here, we evaluated the efficacy of the acute Coral Bleaching Automated Stress System (CBASS) against long-term exposures on the bleaching response of Acropora cervicornis, the dominant restoration species in Florida's Coral Reef. Comparing bleaching metrics, F v /F m , chlorophyll, and host protein, we observed similar responses between the long-term heat and the CBASS treatment of 34.3 °C, which was also the calculated bleaching threshold. This suggests the potential of CBASS as a rapid screening tool, with 90% of restoration genotypes exhibiting similar bleaching tolerances. However, variations in acute bleaching phenotypes arose from measurement timing and experiment heat accumulation, cautioning against generalizations solely based on metrics like F v /F m . These findings identify the need to better refine the tools necessary to quickly and effectively screen coral restoration genotypes and determine their relative tolerance for restoration interventions.
(© 2024. The Author(s).)
Databáze: MEDLINE
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