Relationship between metal levels in the vent mussel Bathymodiolus azoricus and local microhabitat chemical characteristics of Eiffel Tower (Lucky Strike)

Type Article
Date 2011-03
Language English
Author(s) Martins Ines1, Cosson Richard P.2, Riou Virginie1, 3, Sarradin Pierre-MarieORCID4, Sarrazin Jozee4, Santos Ricardo S.1, Colaco Ana1
Affiliation(s) 1 : Univ Azores, DOP Dept Oceanog & Fisheries, IMAR, P-9901862 Horta, Portugal.
2 : Univ Nantes, Biol Marine Lab, ISOMer, MMS, F-44322 Nantes, France.
3 : Vrije Univ Brussel, Dept Analyt & Environm Chem, B-1050 Brussels, Belgium.
4 : IFREMER, Ctr Brest, Lab Environm Profond, Dept Etudes Ecosyst Profond, F-29280 Plouzane, France.
Source Deep-sea Research Part I-oceanographic Research Papers (0967-0637) (Pergamon-elsevier Science Ltd), 2011-03 , Vol. 58 , N. 3 , P. 306-315
DOI 10.1016/j.dsr.2011.01.002
WOS© Times Cited 11
Keyword(s) Metals, Metallothioneins, Bathymodiolus azoricus, Hydrothermal vent, Environmental conditions, Physiological condition, Spatial distribution
Abstract The turbulent mixing of hydrothermal hot fluid with cold seawater creates large chemical gradients at a small spatial scale that may induce variable physiological and biochemical adaptations within the vent fauna. The adaptation to such a variable environment by the vent mussel Bathymodiolus azoricus relies on a dual symbiosis hosted in the gills, and digestion of particulate organic matter. The surrounding environment not only provides the necessary energy sources and suspended organic particles for the vent mussel nutrition, but also potentially toxic compounds such as metals. Our main goal was to see if there is a relation between metal accumulation in mussel organs and the chemical characteristics of their close environment. Mussels were collected at six locations in a cold part of the Eiffel Tower fluid-seawater mixing zone, characterized by distinct chemical compositions. Metals (Cd, Cu, Fe and Zn) and metallothioneins were quantified in the gills and digestive gland. The physiological condition of the sampled mussels was also evaluated using tissues and gill indices. Our study indicates that the accumulation of metals in B. azoricus is related to their spatial distribution and linked to fine scale environmental conditions that influence the physiological status of the organism.

Research highlights
► Bathymodiolus azoricus were collected along a hydrothermal chemical gradient. ► Metals and metallothioneins were quantified in the gills and digestive gland. ► Metal levels reflect mussels spatial distribution and physiological status. ► Metallothionein levels are high and almost constant.
Full Text
File Pages Size Access
10 784 KB Access on demand
Author's final draft 35 492 KB Open access
Top of the page

How to cite 

Martins Ines, Cosson Richard P., Riou Virginie, Sarradin Pierre-Marie, Sarrazin Jozee, Santos Ricardo S., Colaco Ana (2011). Relationship between metal levels in the vent mussel Bathymodiolus azoricus and local microhabitat chemical characteristics of Eiffel Tower (Lucky Strike). Deep-sea Research Part I-oceanographic Research Papers, 58(3), 306-315. Publisher's official version : https://doi.org/10.1016/j.dsr.2011.01.002 , Open Access version : https://archimer.ifremer.fr/doc/00030/14097/