Issue 7, 2009
From the journal:

Journal of Environmental Monitoring

Imposex levels and tributyltin pollution in Ria de Aveiro (NW Portugal) between 1997 and 2007: evaluation of legislation effectiveness

Susana Galante-Oliveira,*a   Isabel Oliveira,a   Niels Jonkers,b   William J. Langston,c   Mário Pachecoa  and  Carlos M. Barrosoa  

* Corresponding authors

a CESAM & Department of Biology, University of Aveiro, Aveiro, Portugal
E-mail: susana.oliveira@ua.pt
Fax: +351 234426408
Tel: +351 234370350 ext. 22752 (LEME)

b IVAM, University of Amsterdam, Amsterdam, The Netherlands

c Marine Biological Association, Citadel Hill, Plymouth, United Kingdom

Abstract

Nucella lapillus imposex levels and organotin (OT) concentrations in water and female tissues were measured in samples collected from the Ria de Aveiro (NW Portugal) between 1997 and 2007. Vas deferens sequence index (VDSI), relative penis size index (RPSI), mean female penis length (FPL) and percentage of imposex affected females (%I) were used to determine imposex levels at each site. A significant temporal decline in imposex intensity was observed during the assessed period. Imposex decrease was evident after 2003 although improvements were most notable from 2005 to 2007, probably due to the implementation of the EU Council Regulation no.782/2003 forbidding further application of tributyltin (TBT) antifouling on vessels carrying EU flags. Despite these improvements, OT analysis in N. lapillus female tissues and water indicate there are still recent TBT inputs into the study area.

Graphical abstract: Imposex levels and tributyltin pollution in Ria de Aveiro (NW Portugal) between 1997 and 2007: evaluation of legislation effectiveness

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Article information

DOI
https://doi.org/10.1039/B900723G
Article type
Paper
Submitted
15 Jan 2009
Accepted
06 May 2009
First published
02 Jun 2009

J. Environ. Monit., 2009,11, 1405-1411

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Imposex levels and tributyltin pollution in Ria de Aveiro (NW Portugal) between 1997 and 2007: evaluation of legislation effectiveness

S. Galante-Oliveira, I. Oliveira, N. Jonkers, W. J. Langston, M. Pacheco and C. M. Barroso, J. Environ. Monit., 2009, 11, 1405 DOI: 10.1039/B900723G

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