Rheological responses of Coral Surface Mucus Under Healthy and Bleaching Conditions

This study examines the rheological characteristics of the surface mucus layer of Acropora corals in healthy conditions and in response to environmental stress-induced bleaching. We discovered that the mucus exhibits gel-like properties with a detectable yield stress. Comparative analyses demonstrate a substantial decrease in both extensional and shear rheology following coral bleaching, indicating a degradation in the structural integrity and functional capabilities of the mucus layer. This research is pioneering in its focus on the rheological behavior of coral mucus in healthy and bleaching conditions, providing new insights into coral resilience. Such knowledge is crucial for developing effective conservation strategies and enhancing predictive models for coral reefs amid climate change and other human impacts.