| Registro completo |
| Provedor de dados: |
5
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| País: |
France
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| Título: |
Relationship between metal levels in the vent mussel Bathymodiolus azoricus and local microhabitat chemical characteristics of Eiffel Tower (Lucky Strike)
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| Autores: |
Martins, Ines
Cosson, Richard P.
Riou, Virginie
Sarradin, Pierre-marie
Sarrazin, Jozee
Santos, Ricardo S.
Colaco, Ana
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| Data: |
2011-03
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| Ano: |
2011
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| Palavras-chave: |
Metals
Metallothioneins
Bathymodiolus azoricus
Hydrothermal vent
Environmental conditions
Physiological condition
Spatial distribution
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| Resumo: |
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.
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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
http://archimer.ifremer.fr/doc/00030/14097/11327.pdf
DOI:10.1016/j.dsr.2011.01.002
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| Editor: |
Pergamon-elsevier Science Ltd
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| Relação: |
http://archimer.ifremer.fr/doc/00030/14097/
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| Formato: |
application/pdf
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| Fonte: |
Deep-sea Research Part I-oceanographic Research Papers (0967-0637) (Pergamon-elsevier Science Ltd), 2011-03 , Vol. 58 , N. 3 , P. 306-315
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| Direitos: |
2011 Elsevier Ltd All rights reserved.
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