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For coral, red means go

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Compiled by BioPhotonics staff

The color that young staghorn coral fluoresce – red or green – seems to predict whether they will swim away from their reef of origin, or stay and settle, biologists have discovered. The Acropora millepora coral that fluoresce redder are less likely to remain and develop into coral polyps than their greener peers, according to biologists at the University of Texas. These findings may help scientists monitor how corals adapt to global warming as they shift to cooler latitudes. At left and below right: Example of fluorescence in the adult Acropora millepora coral. The...Read full article

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    Published: April 2011
    Glossary
    fluorescence
    Fluorescence is a type of luminescence, which is the emission of light by a substance that has absorbed light or other electromagnetic radiation. Specifically, fluorescence involves the absorption of light at one wavelength and the subsequent re-emission of light at a longer wavelength. The emitted light occurs almost instantaneously and ceases when the excitation light source is removed. Key characteristics of fluorescence include: Excitation and emission wavelengths: Fluorescent materials...
    Acropora milleporaAmericasBiophotonicsBioScancalcareous red algaecoral larvaecoral polypsfluorescenceglobal warminglong-range dispersersMikhail MatzNewsreef-building coralsettlement cueshort-range dispersersstaghorn coralTexasUniversity of Texas at Austin

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