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<title lang=en>Colwellia and sulfur-oxidizing bacteria: An unusual dual symbiosis in a Terua mussel (Mytilidae: Bathymodiolinae) from whale falls in the Antilles arc</title>
<creator>Duperron, Sébastien</creator>
<creator>Gros, Olivier</creator>
<contributor>Biologie des Organismes et Ecosystèmes Aquatiques (BOREA) ; Muséum National d'Histoire Naturelle (MNHN) - Université Pierre et Marie Curie - Paris 6 (UPMC) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Institut Universitaire de France (IUF) ; Ministère de l'Éducation nationale, de l’Enseignement supérieur et de la Recherche (M.E.N.E.S.R.)</contributor>
<contributor>Evolution Paris Seine ; 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) - Centre National de la Recherche Scientifique (CNRS)</contributor>
<contributor>Centre Commun de Caractérisation des Matériaux des Antilles et de la Guyane (C3MAG) ; Université des Antilles et de la Guyane (UAG)</contributor>
<description>International audience</description>
<source>Deep Sea Research Part I: Oceanographic Research Papers</source>
<identifier>hal-01336943</identifier>
<identifier>http://hal.upmc.fr/hal-01336943</identifier>
<identifier>http://hal.upmc.fr/hal-01336943/document</identifier>
<identifier>http://hal.upmc.fr/hal-01336943/file/Duperron_Colwellia_and.pdf</identifier>
<source>http://hal.upmc.fr/hal-01336943</source>
<source>Deep Sea Research Part I: Oceanographic Research Papers, 2016, 115, pp.112-122. 〈10.1016/j.dsr.2016.05.012〉</source>
<identifier>DOI : 10.1016/j.dsr.2016.05.012</identifier>
<relation>info:eu-repo/semantics/altIdentifier/doi/10.1016/j.dsr.2016.05.012</relation>
<language>en</language>
<subject lang=en>Caribbean sea</subject>
<subject lang=en>symbiosis</subject>
<subject lang=en>whale falls</subject>
<subject lang=en>sulfur-oxidizing bacteria</subject>
<subject lang=en>Colwellia</subject>
<subject lang=en>Terua</subject>
<subject>[SDE.BE] Environmental Sciences/Biodiversity and Ecology</subject>
<type>info:eu-repo/semantics/article</type>
<type>Journal articles</type>
<description lang=en>Seven individuals of a single morphotype of mussels (Bivalvia: Mytilidae) were found attached to a naturally sunken whale intervertebral disk collected in Guadeloupe (Caribbean) at 800 m depth. These specimens resemble small Idas mussels which are found worldwide at cold seeps and hydrothermal vents, and typically harbor ectosymbiotic bacteria on their gills upon which they depend for nutrition. Based on multi-locus gene sequencing, these specimens appear to belong to a new species closely related to two species now included within the genus Terua. Unexpectedly, its closest relatives are found in the Pacific, questioning how this species has reached the Antilles arc. Based on marker gene sequence analysis, electron and fluorescence microscopy, Terua n. sp. harbors two distinct and abundant extracellular bacterial symbionts located between microvilli at the apical surface of host gill epithelial cells. One is a sulfur-oxidizing bacterium similar to the symbionts previously identified in several deep-sea mussels, while the other is related to Colwellia species, a group of cold-adapted heterotrophic bacteria able to degrade organic compounds. This study provides the first evidence for the existence of a dual symbiosis in mussels from whale fall ecosystems in the Caribbean. The evolutionary history of Terua n. sp. and potential role of its Colwellia symbionts are discussed.</description>
<date>2016-09</date>
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