A study of mucus from the solitary coral Fungia fungites (Scleractinia: Fungiidae) in relation to photobiological UV adaptation |
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Authors: | J H Drollet P Glaziou P M V Martin |
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Institution: | (1) Institut Territorial de Recherches Médicales Louis Malardé, P.O. Box 30, Papeete, Tahiti, French Polynesia |
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Abstract: | The ultraviolet (UV)-absorbance spectrum (300 to 360 nm) of mucus obtained from Fungia fungites (L. 1758, collected in Tahiti in 1991) after being exposed to air for up to 5 min was measured, and UV-absorbing compounds were demonstrated to be present in the mucus, with a peak at 332 nm. The concentration of these UV-absorbing compounds was at a maximum in the first 2 min of secretion and decreased thereafter. Concentration was significantly related to the weight of the coral. Also, as corals were adapted to bathymetric levels of UV radiation, mucus concentration of UV-absorbing compounds decreased significantly with increasing depth. |
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