Jump to main content
Jump to site search

Issue 3, 2005
Previous Article Next Article

One-year monitoring survey of organic compounds (PAHs, PCBs, TBT), heavy metals and biomarkers in blue mussels from the Arcachon Bay, France

Author affiliations

Abstract

Marine mussels Mytilus sp. were transplanted on a monthly basis in cages over one year to oyster farms and harbours in the Arcachon Bay (France) in order to assess the water quality of the bay. Contaminant levels (organotin compounds, trace metals, PCBs and PAHs) were measured in tissues of transplanted mussels and mussels from a reference station, along with physiological parameters of the mussels (condition indexes, lipid content and dry weight). Four biomarkers (AChE: acetylcholinesterase activity, GST: gluthathione S-transferase activity, CAT: catalase activity and TBARS: thiobarbituric acid-reactive substance content) were also monitored. The remote stations monitored (oyster parks) exhibited no accumulation pattern of pollutants. Their respective concentrations therefore constitute a background level of the contamination in the bay ([TBT] = 30 ng Sn g−1 dw, [ΣHAPs] = 100 ng g−1 dw, [ΣPCBs] = 35 ng g−1 dw). The elevated chemical contamination of the largest harbour of the bay, the Arcachon harbour, can be interpreted in terms of persistence of organotin compounds ([ΣOTs] = 1500–2000 ng Sn g−1 dw) and PAHs ([ΣHAPs] = 4500–5000 ng g−1 dw) in sediments and, to a lesser extent, of direct inputs of copper ([Cu] = 20 μg g−1 dw in harbours versus 7 in oyster parks) and petrogenic PAHs ([methylphenanthrenes] = 1600 ng g−1 dw in the dockyard versus 170 at the gas stations), related to the use of copper-based antifouling paints and to dockyard activity, respectively. However, the Arcachon Bay presents a low contamination level by PCBs and metals, including harbour stations. Furthermore, higher levels of other PAHs (particularly alkyl PAHs such as methylphenanthrenes/1600 ng g−1 dw) not included in the 16 PAHs from the EPA priority list (usually studied in biomonitoring programmes/1500 ng g−1 dw) in the Arcachon harbour underline the need to integrate these compounds in biomonitoring of highly PAH-polluted areas such as harbours in order to avoid misinterpretation of the biological responses observed. Biomarker responses were not able to discriminate the different chemical contamination levels recorded in the Arcachon Bay and rather reflected changes in environmental factors. Furthermore, the strong intraspecies variability of biological responses could be due to genetic differences of mussels from the Arcachon Bay. It is the first time that such an integrated monitoring is performed in the Arcachon Bay, also taking into account seasonal variations of chemical contents and biomarkers levels in mussel tissues.

Graphical abstract: One-year monitoring survey of organic compounds (PAHs, PCBs, TBT), heavy metals and biomarkers in blue mussels from the Arcachon Bay, France

Back to tab navigation

Publication details

The article was received on 23 Jun 2004, accepted on 22 Dec 2004 and first published on 31 Jan 2005


Article type: Paper
DOI: 10.1039/B409577D
Citation: J. Environ. Monit., 2005,7, 224-240
  •   Request permissions

    One-year monitoring survey of organic compounds (PAHs, PCBs, TBT), heavy metals and biomarkers in blue mussels from the Arcachon Bay, France

    M. Devier, S. Augagneur, H. Budzinski, K. Le Menach, P. Mora, J. Narbonne and P. Garrigues, J. Environ. Monit., 2005, 7, 224
    DOI: 10.1039/B409577D

Search articles by author

Spotlight

Advertisements