Colonization Of Organic Substrates Deployed In Deep-Sea Reducing Habitats By Symbiotic Species And Associated Fauna

• Published in: Marine Environmental Research
• Language: English
• Published: Elsevier 2011
• Subjects: symbiosis; settlement; colonization; larvae of invertebrates; Xylophaga spp; Idas sp; Thyasira sp; Sclerolinum contortum; Norwegian Sea; Mid-Atlantic Ridge; Bris
• Online Access: http://hdl.handle.net/2262/56402; https://doi.org/10.1016/j.marenvres.2010.02.002

Abstract In this study, our goal was to test whether typical vent/seep organisms harbouring symbionts or not, would be able to settle on organic substrates deployed in the vicinity of chemosynthetic ecosystems. Since 2006, a series of novel standardized colonization devices (CHEMECOLI: CHEMosynthetic Ecosystem COlonization by Larval Invertebrates) filled with three types of substrates (wood, alfalfa and carbonate) have been deployed in different types of reducing habitats including cold seeps in the eastern Mediterranean, a mud volcano in the Norwegian Sea, and hydrothermal vents on the Mid-Atlantic Ridge for durations of 2 weeks to 1 year. For all deployments, highest species diversities were recovered from CHEMECOLIs filled with organic substrates. Larvae from species associated with thiotrophic symbionts such as thyasirid, vesicomyid and mytilid bivalves, were recovered in the eastern Mediterranean and at the Mid-Atlantic Ridge. At the Haakon Mosby Mud Volcano, larvae of symbiotic siboglinids settled on both organic and carbonate substrates. Overall, novel colonization devices (CHEMECOLI) filled with organic substrates attracted both fauna relying on chemosynthesis-derived carbon as well as fauna relying on heterotrophy the latter being opportunistic and tolerant to sulphide. correspondence: Corresponding author. Tel.: ++33 (0)144273781; fax: [phone]. (Gaudron, S.M.) [e-mail] (Gaudron, S.M.) Universite Pierre et Marie Curie ? Paris VI, CNRS - UMR7138--> , Systematique--> , Adaptations--> , Evolution--> , AMEX--> , 7 Quai St Bernard--> , 75252 Paris--> - FRANCE (Gaudron, S.M.) FRANCE (Gaudron, S.M.) Universite Pierre et Marie Curie ? Paris VI, CNRS - UMR7138--> , Systematique--> , Adaptations--> , Evolution--> , AMEX--> , 7 Quai St Bernard--> , 75252 Paris--> - FRANCE (Pradillon, F.) Japan Agency for Marine-Earth Science and Technology (JAMSTEC), Institute of Biogeoscience - 2-15 Natsushima-cho--> , Yokosuka--> , Kanagawa 237-0061--> - JAPAN (Pradillon, F.) Universite Pierre et Marie Curie ? Paris VI, CNRS - UMR7138--> , Systematique--> , Adaptations--> , Evolution--> , AMEX--> , 7 Quai St Bernard--> , 75252 Paris--> - FRANCE (Pailleret, M.) CNRS UMR7207, Centre de recherche sur la paleobiodiversite et les paleoenvironnements-CR2P - Paleobiodiversite des lignees et communautes animales et vegetales--> , MNHN--> , 57 rue Cuvier--> , CC48--> , 75005 Paris--> - FRANCE (Pailleret, M.) Universite Pierre et Marie Curie ? Paris VI, CNRS - UMR7138--> , Systematique--> , Adaptations--> , Evolution--> , AMEX--> , 7 Quai St Bernard--> , 75252 Paris--> - FRANCE (Duperron, S.) IFREMER--> , Departement Environnement Profond--> , BP70--> , 29280 Plouzane--> - FRANCE (Le Bris, N.) Universite Pierre et Marie Curie ? Paris VI, CNRS - UMR7138--> , Systematique--> , Adaptations--> , Evolution--> , AMEX--> , 7 Quai St Bernard--> , 75252 Paris--> - FRANCE (Gaill, F.) FRANCE JAPAN Received: 2009-07-07 Revised: 2010-02-09 Accepted: 2010-02-13