Seasonal changes in imposex and tissue burden of butyltin compounds in Thais clavigera populations along the coastal area of Mirs Bay, China

Ka Ming CHAN, Kenneth Mei Yee LEUNG, Kwai Chung CHEUNG, Ming Hung WONG, Jian-Wen QIU

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27 Citations (Scopus)

Abstract

We assessed the current status of tributyltin (TBT) contamination of Thais clavigera (Gastropoda) along the coastal area of Mirs Bay, China for the first time. The snail samples were collected from 10 different sites in the summer (June) and winter (December) of 2006, respectively. They were analyzed for imposex status, i.e. relative penis size index (RPSI) and vas deferens sequence index (VDSI), followed by quantification of butyltins in their tissues. Most of the collected females suffered from imposex, but the level of butyltin contamination varied with the distance from Yantian Port, which is currently the fourth busiest container port in the world. The tissue concentration of TBT varied with season. For a particular site, the winter samples in general contained much higher concentration of TBT than the summer samples. RPSI, VDSI and organotin concentrations were higher in T. clavigera collected from sites closer to the Port, such as the Seafood Street and Kat O. Both RPSI and VDSI were positively correlated with the tissue burden of tributyltin. VDSI exhibited little seasonal variability, whereas RPSI showed marked seasonal variability, with lower values in the summer samples. The current results will serve as an important reference for long-term monitoring of butyltin contamination in this area. Copyright © 2008 Elsevier Ltd. All rights reserved.

Original languageEnglish
Pages (from-to)645-651
JournalMarine Pollution Bulletin
Volume57
Issue number6-12
DOIs
Publication statusPublished - 2008

Citation

Chan, K. M., Leung, K. M. Y., Cheung, K. C., Wong, M. H., & Qiu, J.-W. (2008). Seasonal changes in imposex and tissue burden of butyltin compounds in Thais clavigera populations along the coastal area of Mirs Bay, China. Marine Pollution Bulletin, 57(6-12), 645-651. doi: 10.1016/j.marpolbul.2008.02.040

Keywords

  • Tributyltin
  • Thais clavigera
  • Imposex
  • Shenzhen
  • Yantian Port

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