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Long-term growth rates of four Mediterranean cold-water coral species maintained in aquaria

AutorOrejas, Covadonga ; Ferrier-Pagès, Christine; Reynaud, Stéphanie; Gori, Andrea ; Beraud, E.; Tsounis, Georgios ; Allemand, Denis; Gili, Josep Maria
Palabras claveMadrepora oculata
Lophelia pertusa
Desmophyllum dianthus
Dendrophyllia cornigera
Buoyant weight
Linear growth
Branching patterns
Mediterranean Sea
Fecha de publicaciónmay-2011
EditorInter Research
CitaciónMarine Ecology Progress Series 429: 57-65 (2011)
ResumenGrowth 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. Additionally, 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 experimental 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 population dynamics of CWC as well as the recovery capacity of these communities after disturbance.
Descripción9 pages, 3 figures, 1 table.
Versión del editorhttp://dx.doi.org/10.3354/meps09104
URI10261/57264
DOI10.3354/meps09104
ISSN0171-8630
E-ISSN1616-1599
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