The University of Southampton
University of Southampton Institutional Repository

Temporal variation in the antioxidant defence system and lipid peroxidation in the gills and mantle of hydrothermal vent mussel Bathymodiolus azoricus

Temporal variation in the antioxidant defence system and lipid peroxidation in the gills and mantle of hydrothermal vent mussel Bathymodiolus azoricus
Temporal variation in the antioxidant defence system and lipid peroxidation in the gills and mantle of hydrothermal vent mussel Bathymodiolus azoricus
Hydrothermal vent mussels are exposed continually to toxic compounds, including high metal concentrations and other substances like dissolved sulphide, methane and natural radioactivity. Fluctuations in these parameters appear to be common because of the characteristic instability of the hydrothermal environment. Temporal variation in the antioxidant enzymes (superoxide dismutase (SOD), catalase (CAT), total glutathione peroxidases (Total GPx), selenium dependent glutathione peroxidases (Se-GPx)), metallothioneins and lipid peroxidation (LPO) in the gills and mantle of the mussel Bathymodiolus azoricus from Menez–Gwen hydrothermal vent site was evaluated and related to the accumulated metal concentrations (Ag, Cu, Cd, Fe, Mn and Zn) in the tissues. Maximum antioxidant enzyme activities in the gills were detected in the beginning of summer, followed by a gradual decrease throughout the following months. One year after, the levels of antioxidant enzyme activities were similar to those reported one year before. LPO in this tissue exhibited a similar temporal variation trend. A different pattern of temporal variation in antioxidant enzyme activities was observed in the mantle, with a gradual increase from summer to the end of autumn (November). LPO in the mantle exhibited an almost reverse trend of temporal variation to that of antioxidant enzyme activities in this tissue. Antioxidant defences in the gills of B. azoricus were significantly enhanced with increasing concentrations of Ag, Cu and Mn, while negative relationships between antioxidant enzymes and Cd, Cu, Mn and Zn concentrations in the mantle were observed, suggesting different pathways of reactive oxygen species (ROS) production and that these tissues responded differently to the metal accumulation. However, temporal variation in biomarkers of defence and damage were in general similar to coastal bivalve species and can be associated with temporal variations of the physiological status due to reproduction. These variations might also be linked to the highly unstable nature of the hydrothermal environment.
0967-0637
1101-1116
Company, R.
841ec15b-5b6f-42e5-9742-8e559f9845ea
Serafim, A.
288472f3-fc16-48f5-bf69-970924415d07
Cosson, R.
8195146c-2941-4ac8-9c84-63dadce6de13
Fiala-Medioni, A.
3c2c0c57-94e1-4cfd-ab85-b0a8352a82d1
Dixon, D.
7d5fc55d-89e5-4964-95e2-3bbb79d354ad
Bebianno, M.J.
580f3383-6a0f-4f7f-a30a-031f0c6a3ec9
Company, R.
841ec15b-5b6f-42e5-9742-8e559f9845ea
Serafim, A.
288472f3-fc16-48f5-bf69-970924415d07
Cosson, R.
8195146c-2941-4ac8-9c84-63dadce6de13
Fiala-Medioni, A.
3c2c0c57-94e1-4cfd-ab85-b0a8352a82d1
Dixon, D.
7d5fc55d-89e5-4964-95e2-3bbb79d354ad
Bebianno, M.J.
580f3383-6a0f-4f7f-a30a-031f0c6a3ec9

Company, R., Serafim, A., Cosson, R., Fiala-Medioni, A., Dixon, D. and Bebianno, M.J. (2006) Temporal variation in the antioxidant defence system and lipid peroxidation in the gills and mantle of hydrothermal vent mussel Bathymodiolus azoricus. Deep Sea Research Part I: Oceanographic Research Papers, 53 (7), 1101-1116. (doi:10.1016/j.dsr.2006.05.008).

Record type: Article

Abstract

Hydrothermal vent mussels are exposed continually to toxic compounds, including high metal concentrations and other substances like dissolved sulphide, methane and natural radioactivity. Fluctuations in these parameters appear to be common because of the characteristic instability of the hydrothermal environment. Temporal variation in the antioxidant enzymes (superoxide dismutase (SOD), catalase (CAT), total glutathione peroxidases (Total GPx), selenium dependent glutathione peroxidases (Se-GPx)), metallothioneins and lipid peroxidation (LPO) in the gills and mantle of the mussel Bathymodiolus azoricus from Menez–Gwen hydrothermal vent site was evaluated and related to the accumulated metal concentrations (Ag, Cu, Cd, Fe, Mn and Zn) in the tissues. Maximum antioxidant enzyme activities in the gills were detected in the beginning of summer, followed by a gradual decrease throughout the following months. One year after, the levels of antioxidant enzyme activities were similar to those reported one year before. LPO in this tissue exhibited a similar temporal variation trend. A different pattern of temporal variation in antioxidant enzyme activities was observed in the mantle, with a gradual increase from summer to the end of autumn (November). LPO in the mantle exhibited an almost reverse trend of temporal variation to that of antioxidant enzyme activities in this tissue. Antioxidant defences in the gills of B. azoricus were significantly enhanced with increasing concentrations of Ag, Cu and Mn, while negative relationships between antioxidant enzymes and Cd, Cu, Mn and Zn concentrations in the mantle were observed, suggesting different pathways of reactive oxygen species (ROS) production and that these tissues responded differently to the metal accumulation. However, temporal variation in biomarkers of defence and damage were in general similar to coastal bivalve species and can be associated with temporal variations of the physiological status due to reproduction. These variations might also be linked to the highly unstable nature of the hydrothermal environment.

Full text not available from this repository.

More information

Published date: 2006

Identifiers

Local EPrints ID: 41467
URI: http://eprints.soton.ac.uk/id/eprint/41467
ISSN: 0967-0637
PURE UUID: e25e12a3-4258-4863-ad03-213f2d53e31d

Catalogue record

Date deposited: 11 Sep 2006
Last modified: 15 Jul 2019 18:57

Export record

Altmetrics

Contributors

Author: R. Company
Author: A. Serafim
Author: R. Cosson
Author: A. Fiala-Medioni
Author: D. Dixon
Author: M.J. Bebianno

University divisions

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of http://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×