Acute temperature effects on cilia beating increase coral deoxygenation.
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| Autori principali: | , , , , , , , |
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| Natura: | Artículo científico |
| Lingua: | en |
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Science advances
2026
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| _version_ | 1868266046447681536 |
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| author | Pacherres, Cesar O Dhillon, Max S Bilbo, Mads Hansen, Mikkel Brumley, Douglas R Aranda, Manuel Ahmerkamp, Soeren Kühl, Michael |
| author_facet | Pacherres, Cesar O Dhillon, Max S Bilbo, Mads Hansen, Mikkel Brumley, Douglas R Aranda, Manuel Ahmerkamp, Soeren Kühl, Michael Pacherres, Cesar O Dhillon, Max S Bilbo, Mads Hansen, Mikkel Brumley, Douglas R Aranda, Manuel Ahmerkamp, Soeren Kühl, Michael |
| collection | PubMed - marine biology |
| contents | Acute temperature effects on cilia beating increase coral deoxygenation. Pacherres, Cesar O Dhillon, Max S Bilbo, Mads Hansen, Mikkel Brumley, Douglas R Aranda, Manuel Ahmerkamp, Soeren Kühl, Michael Animals Anthozoa Cilia Oxygen Temperature Coral Reefs Cilia-induced vortical flows are critical for regulating oxygen (O) and metabolite exchange across coral-water interfaces. While this active ventilation affects the coral tissue microenvironment, its role in thermal stress remains poorly understood. Using high-speed imaging of cilia beating, particle image velocimetry with O-sensitive nanoparticles, and a mechanistic transport model, we quantified how ciliary dynamics in the reef-building coral respond to acute warming in darkness. Moderate warming (~35°C) enhanced ciliary activity and advective transport yet paradoxically thickened the concentration boundary layer with O-depleted water, exposing tissues to transient hypoxia. At higher temperatures, ventilation failed to meet rising metabolic demands and anoxic regions expanded rapidly. Above ~37°C, ciliary coordination collapsed and vortical flows dissipated, shifting transport to a diffusion-limited regime accelerating coral mortality. These results identify ciliary beating as a key regulator of thermal tolerance and early indicator of critical physiological tipping points for reef-building corals in a warming, deoxygenating ocean. |
| format | Artículo científico |
| id | pubmed_42160419 |
| institution | PubMed |
| language | en |
| publishDate | 2026 |
| publisher | Science advances |
| record_format | pubmed |
| spellingShingle | Acute temperature effects on cilia beating increase coral deoxygenation. Pacherres, Cesar O Dhillon, Max S Bilbo, Mads Hansen, Mikkel Brumley, Douglas R Aranda, Manuel Ahmerkamp, Soeren Kühl, Michael Animals Anthozoa Cilia Oxygen Temperature Coral Reefs Acute temperature effects on cilia beating increase coral deoxygenation. Pacherres, Cesar O Dhillon, Max S Bilbo, Mads Hansen, Mikkel Brumley, Douglas R Aranda, Manuel Ahmerkamp, Soeren Kühl, Michael Animals Anthozoa Cilia Oxygen Temperature Coral Reefs Cilia-induced vortical flows are critical for regulating oxygen (O) and metabolite exchange across coral-water interfaces. While this active ventilation affects the coral tissue microenvironment, its role in thermal stress remains poorly understood. Using high-speed imaging of cilia beating, particle image velocimetry with O-sensitive nanoparticles, and a mechanistic transport model, we quantified how ciliary dynamics in the reef-building coral respond to acute warming in darkness. Moderate warming (~35°C) enhanced ciliary activity and advective transport yet paradoxically thickened the concentration boundary layer with O-depleted water, exposing tissues to transient hypoxia. At higher temperatures, ventilation failed to meet rising metabolic demands and anoxic regions expanded rapidly. Above ~37°C, ciliary coordination collapsed and vortical flows dissipated, shifting transport to a diffusion-limited regime accelerating coral mortality. These results identify ciliary beating as a key regulator of thermal tolerance and early indicator of critical physiological tipping points for reef-building corals in a warming, deoxygenating ocean. |
| title | Acute temperature effects on cilia beating increase coral deoxygenation. |
| topic | Animals Anthozoa Cilia Oxygen Temperature Coral Reefs |
| url | https://pubmed.ncbi.nlm.nih.gov/42160419/ |