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<title lang=en>Thermal threshold and sensitivity of the only symbiotic Mediterranean gorgonian Eunicella singularis by morphometric and genotypic analyses</title>
<creator>Pey, Alexis</creator>
<creator>Cataneo, Jerome</creator>
<creator>Forcioli, Didier</creator>
<creator>Merle, Pierre-Laurent</creator>
<creator>Furla, Paola</creator>
<contributor>Symbiose Marine (SM) ; Systématique, adaptation, évolution (SAE) ; Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS) - Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS) - Evolution Paris Seine ; Université Nice Sophia Antipolis (UNS) ; Université Côte d'Azur (UCA) - Université Côte d'Azur (UCA) - Centre National de la Recherche Scientifique (CNRS) - Université des Antilles et de la Guyane (UAG) - Université Pierre et Marie Curie - Paris 6 (UPMC) - Université Nice Sophia Antipolis (UNS) ; Université Côte d'Azur (UCA) - Université Côte d'Azur (UCA) - Université des Antilles et de la Guyane (UAG)</contributor>
<contributor>Agence nationale pour la recherche [ANR05-BDIV-005-04]</contributor>
<contributor> Conseil general des Alpes-Maritimes [CG06-2010]</contributor>
<contributor> French Ministere de l'Enseignement superieur et de la Recherche [33071-2008]</contributor>
<description>International audience</description>
<source>ISSN: 1631-0691</source>
<source>Comptes Rendus Biologies</source>
<publisher>Elsevier Masson</publisher>
<identifier>hal-01546168</identifier>
<identifier>https://hal.archives-ouvertes.fr/hal-01546168</identifier>
<source>https://hal.archives-ouvertes.fr/hal-01546168</source>
<source>Comptes Rendus Biologies, Elsevier Masson, 2013, 336 (7), pp.331-341. 〈10.1016/j.crvi.2013.06.008〉</source>
<identifier>DOI : 10.1016/j.crvi.2013.06.008</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.crvi.2013.06.008</relation>
<language>en</language>
<subject lang=en>Global climate change</subject>
<subject lang=en> Gorgonian</subject>
<subject lang=en> Mass mortalities</subject>
<subject lang=en> Thermal threshold</subject>
<subject lang=en> Thermotolerance</subject>
<subject lang=en> Mediterranean Sea</subject>
<subject>[SDV.BID.EVO] Life Sciences [q-bio]/Biodiversity/Populations and Evolution [q-bio.PE]</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>The only symbiotic Mediterranean gorgonian, Eunicella singularis, has faced several mortality events connected to abnormal high temperatures. Since thermotolerance data remain scarce, heat-induced necrosis was monitored in aquarium by morphometric analysis. Gorgonian tips were sampled at two sites: Medes (Spain) and Riou (France) Islands, and at two depths: 15 m and-35 m. Although coming from contrasting thermal regimes, seawater above 28 degrees C led to rapid and complete tissue necrosis for all four populations. However, at 27 degrees C, the time length leading to 50% tissue necrosis allowed us to classify samples within three classes of thermal sensitivity. Irrespectively of the depth, Medes specimens were either very sensitive or resistant, while Riou fragments presented a medium sensitivity. Microsatellite analysis revealed that host and symbiont were genetically differentiated between sites, but not between depths. Finally, these genetic differentiations were not directly correlated to a specific thermal sensitivity whose molecular bases remain to be discovered.</description>
<date>2013-07</date>
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