Metal bioconcentration in the scleractinian coral Stylophora pistillata: investigating the role of different components of the holobiont using radiotracers

Environmental Monitoring and Assessment
Marc MetianM Warnau

Abstract

Bioconcentration kinetics of five metals (Ag, Cd, Co, Mn, and Zn) were determined in the scleractinian coral Stylophora pistillata (entire symbiotic association vs. cultured symbionts), using radiotracer techniques. Among contrasting element behaviors observed in S. pistillata, the highest efficiency of concentration and retention was observed for Ag in the symbiotic association (CFss reaching 5000 and T b½>1 year). Predominant proportion of this metal was found associated with the skeleton whereas the other metals were mainly present in the coral tissues (including host tissues and symbionts). A 96-h exposure of cultured symbionts (isolated zooxantellae from S. pistillata) indicated that they displayed a very high potential for metal bioconcentration (higher by 1 to 3 orders of magnitude compared to the skeleton). In addition, among the five elements investigated, Ag had the highest concentration factor in the cultured symbionts. Contrasting kinetic characteristics of skeleton vs. tissues offer interesting implications for biomonitoring purposes. Indeed, the skeleton was shown to display stable metal concentrations after an exposure (long retention time) and thereby allows recording contamination event on the long term, wherea...Continue Reading

References

Mar 6, 2002·Microscopy Research and Technique·Alan T Marshall
Aug 16, 2003·Science·T P HughesJ Roughgarden
Dec 4, 2003·Marine Pollution Bulletin·A J Reichelt-Brushett, G McOrist
Aug 13, 2004·Nature·Andrew C BakerPeter W Glynn
Sep 7, 2007·Aquatic Toxicology·Carys L MitchelmoreVirginia M Weis
Sep 4, 2008·Bulletin of Environmental Contamination and Toxicology·Marc Metian, Michel Warnau
Dec 3, 2008·Biological Reviews of the Cambridge Philosophical Society·Fanny Houlbrèque, Christine Ferrier-Pagès
Jul 3, 2013·Marine Pollution Bulletin·Jamey E ReddingKiho Kim
May 1, 1990·Environmental Monitoring and Assessment·R G Hanna, G L Muir

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