X-radiographs of corallites of the zooxanthellate coral Cladocora caespitosa (L.), collected in the Ligurian Sea between 3 and 27 m depth, were examined. C. caespitosa deposits 2 bands yr-1; the high density band is deposited during winter (November to March) while the low density band is deposited in summer. Average growth rates ranged from 1.36 ± 0.58 to 4.42 ± 1.61 mm yr-1. No differences in the timing of band deposition were found between shallow and deep colonies. A comparison of the band pattern with monthly temperature-irradiance measurements from the Ligurian Sea, and with literature data on the photosynthetic efficiency of zooxanthellae, led us to hypothesise a mechanism of growth with a low dependency on autotrophy.
All Science Journal Classification (ASJC) codes
- Ecology, Evolution, Behavior and Systematics
- Aquatic Science
Peirano, A., Morri, C., & Bianchi, C. N. (1999). Skeleton growth and density pattern of the temperate, zooxanthellate scleractinian Cladocora caespitosa from the Ligurian Sea (NW Mediterranean). Marine Ecology - Progress Series, 185, 195 - 201. https://doi.org/10.3354/meps185195