Slide with a light blue background and the ICRS logo in the upper right corner. The logo is circular with a blue background, a small school of fish in the upper right area, and the outline of a brain coral in white in the lower left. On the upper left side of the slide, large black text reads “NEW PUBLICATION!”. Below it appears the title: “Today’s pick: Induced bleaching enhances cold tolerance in coral larvae: a potential strategy for cryopreservation optimization.” Beneath the text there is an illustration of a book displaying the article cover, and in the lower right corner the citation reads “Coral Reefs - Buttari et al., 2025.”
Slide explaining coral–microalgae symbiosis and bleaching. A diagram shows a coral with Symbiodiniaceae microalgae. Text reads: “MOST Reef-building corals live in symbiosis with photosynthetic microalgae.” Text explains: “In this partnership, microalgae photosynthesise and supply the coral with energy-rich compounds, while the coral provides protection and nutrients such as carbon dioxide and ammonium.” Below, a white coral with sun and thermometer icons illustrates bleaching. Text reads: “When corals experience stress – for example from temperature anomalies or intense light – this relationship becomes disrupted. Microalgae are lost, causing bleaching and, in severe cases, coral death.” A note states: “Rising ocean temperatures are the main cause of coral bleaching.” Images of Acropora, Pocillopora, and Porites accompany the text: “Bleaching events threaten fast-growing corals like Acropora and Pocillopora, potentially shifting reefs toward dominance by more thermally tolerant genera such as Porites.”
Slide with a light blue background. At the top, a light pink banner reads: “Cryopreservation is a promising strategy for coral conservation.”
The slide presents four sections with images. The first reads: “1 – What is cryopreservation? Cryopreservation works by freezing coral cells, gametes, or larvae at ultra-low temperatures, preserving them for long periods of time.” Next to it is a photo of a sample being removed from liquid nitrogen.
The second reads: “2 – Why cryopreservation? This approach can help preserve coral genetic diversity and contribute to the long-term resilience of coral populations.” Beside it is an image of a diverse, colorful coral reef.
The third reads: “3 – What is the challenge? Whole coral larvae are biologically complex. Their size and sensitivity to cold make successful freezing challenging, affecting post-thaw performance.” Next to the text is an image of a brownish coral larva with a 200 µm scale bar.
The fourth reads: “4 – What if bleaching helped? Coral thermal tolerance is dynamic and can be influenced by prior stress exposure. Could bleaching before freezing enhance larval cryotolerance and post-thaw performance?” Beside it is an image of a cryotube sample being removed from a frozen container.
Slide with a light blue background. At the top, a pink rectangle reads “selected study species.” Attached to it is a blue rectangle with the text “Meet Pocillopora acuta” written in pink.
Next to it, a vertical pink panel shows a photo of the coral Pocillopora acuta, a branching brown reef-building coral. Blue arrows from the photo point to the following text: “Branching reef-building coral (family Pocilloporidae),” “Still able to recruit under warming and acidification projected conditions,” “Can reproduce clonally (helps localized adaptation to changing environments),” “Sensitive to heat stress and bleaching,” “A strong candidate for larval cryopreservation research,” and “Larger larvae than those previously cryopreserved.”
🧊🪸 Could bleaching before freezing improve coral larval cryopreservation success?
Discover more in this recently published paper: link.springer.com/article/10.1...
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