Please use this identifier to cite or link to this item: http://hdl.handle.net/10261/56715
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Título : Low connectivity and declining genetic variability along a depth gradient in Corallium rubrum populations
Autor : Costanini, F., Rossi, Sergio, Pintus, E., Cerrano, C., Gili, Josep Maria, Abbiati, M.
Palabras clave : Corallium rubrum
Depth cline
Microsatellites
Genetic structuring
Conservation
Mediterranean Sea
Fecha de publicación : Dec-2011
Editor: Springer
Resumen: This study examines the possible effect of depth on the connectivity and genetic variability in red coral (Corallium rubrum; Octocorallia: Alcyonacea) populations. Patterns of genetic structuring along a depth gradient (from 20 to 70 m) were investigated in two locations of the western Mediterranean coast (northern Catalan and eastern Ligurian Seas) using 10 microsatellite loci. Strong patterns of genetic structuring among the samples were found both within and between the two study sites. In both locations, consistent patterns of reduction in genetic variability along the depth gradient were also observed, suggesting that depth has an important role in determining the patterns of genetic structure in Corallium rubrum. Moreover, a threshold in connectivity was observed among the samples collected across 40–50 m depth, supporting the hypothesis that discrete shallow- and deep-water red coral populations occur. This finding has major implications for management strategies and the conservation of commercially exploited deep red coral populations.
Descripción : 13 pages, 3 figures, 4 tables.
Versión del editor: http://dx.doi.org/10.1007/s00338-011-0771-1
URI : http://hdl.handle.net/10261/56715
ISSN: 0722-4028
DOI: 10.1007/s00338-011-0771-1
Citación : Coral Reefs - Journal of the International Society for Reef Studies 30(4): 991-1003 (2011)
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