Journal
CORAL REEFS
Volume 29, Issue 2, Pages 521-525Publisher
SPRINGER
DOI: 10.1007/s00338-010-0590-9
Keywords
Growth rate; Scleractinian; Deep-water; Solitary coral; Environmental factors
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Funding
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- Canada Foundation for Innovation (CFI)
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Growth rate (linear skeleton extension) was determined in live specimens of the deep-sea cup coral Flabellum alabastrum (Anthozoa: Flabellidae) collected between 600 and 1,200 m off insular Newfoundland (eastern Canada) and kept under laboratory conditions for over 2 years. Smaller individuals grew faster (similar to 5 mm year(-1)) than larger ones (similar to 1 mm year(-1)). Seasonal variations in extension rates and qualitative appearance of the growth bands were recorded, with maximum extension occurring in late summer and early fall during maxima in seawater temperature, zooplankton levels, and deposition of suspended detritus. Estimates from a growth model indicate that the largest individuals of F. alabastrum (similar to 43 mm calyx height) are at least 45 years old.
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