http://dx.doi.org/10.1016/j.marpolbul.2011.02.032">
 

Document Type

Journal Article

Department/Unit

Department of Biology

Title

Seasonal variations of imposex indices and butyltin concentrations in the rock shell Thais clavigera collected from Hong Kong waters

Language

English

Abstract

This study investigated butyltin contamination in Hong Kong waters using the rock shell Thais clavigera as a biomonitor. We collected rock shells from nine coastal sites in both winter 2005 and summer 2006 to examine the spatial and seasonal patterns. The relative penis size index (RPSI) and vas deferens sequence index (VDSI) were determined following a standard protocol, while the tissue concentrations of butyltins (i.e., mono-, di- and tri-butyltin) were measured using gas chromatography. The results showed that imposex was particularly severe in T. clavigera collected from Victoria Harbour, Pak Sha Wan and Sai Kung Pier where shipping activities were frequent. Both imposex indices had a positive correlation with tissue concentration of tributyltin in T. clavigera. While VDSI exhibited little seasonal variation, RPSI of winter specimens was significantly higher than that of summer specimens. Thus, sampling season should be standardised when using RPSI as a biomarker. © 2011 Elsevier Ltd.

Keywords

Antifouling paints, Endocrine disruption, Neogastropod, TBT, Thais clavigera

Publication Date

2011

Source Publication Title

Marine Pollution Bulletin

Volume

63

Issue

12-5

Start Page

482

End Page

488

Publisher

Elsevier

ISSN (print)

0025326X

ISSN (electronic)

18793363

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