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Title: Long-term growth rates of four Mediterranean cold water coral species maintained in aquaria
Author: Orejas, Covadonga
Ferrier-Pagès, C.
Reynaud, S.
Gori, Andrea
Beraud, E.
Tsounis, Georgios
Allemand, D.
Gili, Josep Maria, 1953-
Keywords: Coralls
Issue Date: 16-May-2011
Publisher: Inter-Research
Abstract: Growth rates of the cold-water corals (CWC) Madrepora oculata, Lophelia pertusa, Desmophyllum dianthus and Dendrophyllia cornigera were measured over 8 mo under controlled conditions (12°C in the dark, fed 5 times a week) by means of the buoyant weight technique. Addi- tionally, linear growth rates were measured in M. oculata and L. pertusa for 2 and 1 yr, respectively. The weight measurements revealed growth rates, expressed as percent growth per day (mean ± SD), of 0.11 ± 0.04 for M. oculata, 0.02 ± 0.01 for L. pertusa, 0.06 ± 0.03 for D. dianthus and 0.04 ± 0.02 % d-1 for D. cornigera. Growth in M. oculata was significantly higher (p < 0.0001) than in the other 3 CWC species. For M. oculata and L. pertusa, also linear growth was recorded. These values (mean ± SD) were 0.014 ± 0.007 and 0.024 ± 0.018 mm d-1 for M. oculata and L. pertusa, respectively. This is the first study that compares the growth rates of 4 different CWC species under the same experimen- tal conditions of water flow, temperature, salinity and food supply. These corals have different growth rates, both in terms of total weight increase and linear increase, and these growth rates can be related to interspecific physiological differences. Data on growth rates are essential to understand the popu- lation dynamics of CWC as well as the recovery capacity of these communities after disturbance.
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It is part of: Marine Ecology Progress Series, 2011, vol. 429, p. 57-65
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ISSN: 0171-8630
Appears in Collections:Articles publicats en revistes (Biologia Evolutiva, Ecologia i Ciències Ambientals)

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