Different energy sources for three symbiont-dependent bivalve molluscs at the Lagatchve hydrothermal site (Mid Atlantic Ridge)

Southward, EC; Gebruk, AV; Kennedy, H; Southward, AJ; Chevaldonne, P. 2001 Different energy sources for three symbiont-dependent bivalve molluscs at the Lagatchve hydrothermal site (Mid Atlantic Ridge). Journal of the Marine Biological Association of the United Kingdom, 81 (4). 655-661. 10.1017/S0025315401004337

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Abstract/Summary

The vent mussel Bathymodiolus puteoserpentis, a large vesicomyid clam and a smaller thyasirid were collected from an area of sediment subject to diffuse hydrothermal flow. The mussels live on the surface, the vesicomyids are partly buried and the thyasirids burrow in the sediment. The fine structure of the gills differs in the three bivalves. Bathymodiolus puteoserpentis hosts two types of bacterial symbiont, one methanotrophic, and another probably thiotrophic. The other two bivalves have single types of symbiont of different shapes. Stable isotope ratios of carbon and nitrogen indicate thiotrophy in the vesicomyid and thyasirid, but a predominance of methanotrophy in the mussel. This is the first time that such an assemblage has been found at a hydrothermal site on the Mid-Atlantic Ridge (MAR), with the different faunistic elements exploiting different energy resources

Item Type: Publication - Article
Additional Keywords: Energy resources; symbionts; hydrothermal springs; hosts; carbon isotope ratio; nitrogen isotopes; habitat; new records
Subjects: Zoology
Divisions: Marine Biological Association of the UK > Other (MBA)
Depositing User: EPServices Admin
Date made live: 27 Nov 2007
Last Modified: 06 Jun 2017 16:02
URI: http://plymsea.ac.uk/id/eprint/2222

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