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Seasonal changes in coral thermal threshold suggest species-specific strategies for coping with temperature variations

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2024

Autor:innen

García, Francisca C.
Osman, Eslam O.
Garcias-Bonet, Neus
Delgadillo-Ordoñez, Nathalia
Santoro, Erika P.
Raimundo, Inês
Villela, Helena D. M.
Peixoto, Raquel S.

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Deutsche Forschungsgemeinschaft (DFG): 433042944

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Published

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Communications Biology. Springer. 2024, 7(1), 1680. eISSN 2399-3642. Verfügbar unter: doi: 10.1038/s42003-024-07340-w

Zusammenfassung

Coral thermotolerance research has focused on the ability of coral holobionts to maximize withstanding thermal stress exposure. Yet, it’s unclear whether thermal thresholds adjust across seasons or remain constant for a given species and location. Here, we assessed the thermal tolerance thresholds over time spanning the annual temperature variation in the Red Sea for Pocillopora verrucosa and Acropora spp. colonies. Utilizing the Coral Bleaching Automated Stress System (CBASS), we conducted standardized acute thermal assays by exposing corals to a range of temperatures (30 to 39 °C) and measuring their photosynthetic efficiency (Fv/Fm). Our results reveal species-specific thermal tolerance patterns. P. verrucosa exhibited significant seasonal changes in their thermal thresholds of around 3 °C, while Acropora spp. remained rather stable, showing changes of around 1 °C between seasons. Our work shows that thermal thresholds can vary with seasonal temperature fluctuations, suggesting that coral species may acclimate to these natural temperature hanges over short periods in a species-specific manner.

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570 Biowissenschaften, Biologie

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Climate-change ecology, Evolutionary ecology

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ISO 690GARCÍA, Francisca C., Eslam O. OSMAN, Neus GARCIAS-BONET, Nathalia DELGADILLO-ORDOÑEZ, Erika P. SANTORO, Inês RAIMUNDO, Helena D. M. VILLELA, Christian R. VOOLSTRA, Raquel S. PEIXOTO, 2024. Seasonal changes in coral thermal threshold suggest species-specific strategies for coping with temperature variations. In: Communications Biology. Springer. 2024, 7(1), 1680. eISSN 2399-3642. Verfügbar unter: doi: 10.1038/s42003-024-07340-w
BibTex
@article{Garcia2024-12-19Seaso-71877,
  title={Seasonal changes in coral thermal threshold suggest species-specific strategies for coping with temperature variations},
  year={2024},
  doi={10.1038/s42003-024-07340-w},
  number={1},
  volume={7},
  journal={Communications Biology},
  author={García, Francisca C. and Osman, Eslam O. and Garcias-Bonet, Neus and Delgadillo-Ordoñez, Nathalia and Santoro, Erika P. and Raimundo, Inês and Villela, Helena D. M. and Voolstra, Christian R. and Peixoto, Raquel S.},
  note={Article Number: 1680}
}
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All R code used in this study is available in the Zenodo repository
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