2024-03-28T15:59:30Zhttp://digital.csic.es/dspace-oai/requestoai:digital.csic.es:10261/1910022020-12-21T06:46:01Zcom_10261_123com_10261_8col_10261_502
00925njm 22002777a 4500
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Aurelle, D.
author
Pratlong, Marine
author
Haguenauer, A.
author
Brener-Raffalli, K.
author
Toulza, Eve
author
Garrabou, Joaquim
author
Pontarotti, P.
author
Linares, Cristina
author
López-Sendino, P.
author
Montero-Serra, Ignasi
author
Frias-Vidal, Silvia
author
Ledoux, J. B.
author
2018-08-19
The recent advances in molecular ecology offer the opportunity to link evolutionary and conservation biology. Nevertheless, there is still a gap between evolutionary concepts and management policies. We present an overview of the molecular ecology studies conducted in the harvested red coral Corallium rubrum and how these studies may improve the species management. Due to its life history traits, its ecological role and the anthropogenic (overfishing) and climatic (mortality events) pressures impacting its populations, C. rubrum is an original model to characterize the interaction of evolutionary processes in the response of populations to global change. First population genetics studies demonstrated restricted gene flow among populations emphasizing the importance of local processes in population maintenance and suggesting strong population by environment interactions. Further studies based on microsatellites and RAD-sequencing thus aimed to characterize population functioning and reproductive biology and to look for imprint of local adaptation. The observed fine spatial scale genetic structure between colonies within a population implied that breeding units are restricted in space and composed by related individuals. We studied the interaction between population density and genetic drift in two populations differentially depleted by mortality events. The level of genetic drift was similar in the two populations suggesting that an increase of dispersal may balance to some point the decrease of population density. In order to characterize the impact of local adaptation in this species, we also developed integrative studies associating experimental, genetic (microsatellites and RAD-Seq) and transcriptomic approaches. We revealed a signal of local adaptation blurred by strong genetic drift, explaining potentially the differential mortalities observed during mortality events. A by-product of these genomic studies was the development of molecular sexing protocol. The implications for the management of red coral populations ranging from molecular forensic analyses, design of marine protected area to restoration actions will be discussed
2nd Joint Congress on Evolutionary Biology (2018)
http://hdl.handle.net/10261/191002
Bridging the gap between evolutionary and conservation biology: the case of a precious octocoral threatened by global change, the Mediterranean red coral