Temporal evolution of imposex in Nassarius reticulatus (L.) along the Portuguese coast: the efficacy of EC regulation 782/2003

Journal of Environmental Monitoring : JEM
Miléne RatoCarlos Barroso

Abstract

Imposex levels in Nassarius reticulatus (L.) were determined in 44 sites along the Portuguese coast in 2006 in order to describe spatial and temporal trends of TBT pollution in the area. The percentage of females with imposex across sites varied between 20 and 100, denoting the extent of this phenomenon throughout the Portuguese coast. The mean female penis length per site varied between 0.0-8.0 mm and the relative penis length index (mean female penis length x 100/mean male penis length) attained a maximum value of 92%, i.e., female penis never surpasses the size of the male penis but nevertheless it can almost approach the male dimensions. The vas deferens sequence index ranged from 0.2 to 4.5 and the oviduct convolution index varied between 0.0 and 1.3 across stations. The penis growth, the vas deferens development and the oviduct convolution were all correlated and constitute visible signs of a global virilisation progression in females in response to the proximity of harbours that constitute the main TBT pollution sources. The results indicate that about 95% of the surveyed sites were still exposed to TBT water concentrations above the OSPAR Environmental Assessment Criteria. Nevertheless, signs of recovery are shown by th...Continue Reading

References

Sep 28, 2000·The Science of the Total Environment·C Alzieu

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Citations

Aug 8, 2009·Pharmacoepidemiology and Drug Safety·Stephen R WisniewskiAndrei Pikalov
Oct 23, 2009·Obesity Reviews : an Official Journal of the International Association for the Study of Obesity·G MussoM Cassader
Apr 9, 2011·Marine Pollution Bulletin·Minkyu ChoiHee-Gu Choi
Feb 6, 2010·Otolaryngology--head and Neck Surgery : Official Journal of American Academy of Otolaryngology-Head and Neck Surgery·Seth R SchwartzMilesh M Patel
Sep 25, 2014·Annual Review of Marine Science·Ryan J Lowe, James L Falter
Sep 6, 2018·Anais Da Academia Brasileira De Ciências·Fábio T DelazariDerly J H Silva
Oct 2, 2019·The Plant Journal : for Cell and Molecular Biology·Jian-Ping AnYu-Jin Hao

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