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

Jian Wen Qiu; Ka Ming Chan; Kenneth Mei Yee Leung

doi:10.1016/j.marpolbul.2011.02.032

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

Jian Wen Qiu^*, Ka Ming Chan, Kenneth Mei Yee Leung

^*Corresponding author for this work

Department of Biology

Research output: Contribution to journal › Journal article › peer-review

20 Citations (Scopus)

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.

Original language	English
Pages (from-to)	482-488
Number of pages	7
Journal	Marine Pollution Bulletin
Volume	63
Issue number	5-12
DOIs	https://doi.org/10.1016/j.marpolbul.2011.02.032
Publication status	Published - 2011

User-Defined Keywords

Antifouling paints
Endocrine disruption
Neogastropod
TBT
Thais clavigera

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10.1016/j.marpolbul.2011.02.032

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

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.",

keywords = "Antifouling paints, Endocrine disruption, Neogastropod, TBT, Thais clavigera",

author = "Qiu, {Jian Wen} and Chan, {Ka Ming} and Leung, {Kenneth Mei Yee}",

note = "Funding Information: We thank Benz Chan (Biology and Chemistry Department, City University of Hong Kong) for his assistance in operating the GC-FPD. This study was primarily supported by an FRG grant from HKBU to JWQ. KMYL was partially supported by the Area of Excellence Scheme under the University Grants Committee of Hong Kong SAR China (Project No. AoE/P-04/2004) and by the Research Grants Council through a General Research Fund (Project No. HKU 7034/07P). ",

year = "2011",

doi = "10.1016/j.marpolbul.2011.02.032",

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T1 - Seasonal variations of imposex indices and butyltin concentrations in the rock shell Thais clavigera collected from Hong Kong waters

AU - Qiu, Jian Wen

AU - Chan, Ka Ming

AU - Leung, Kenneth Mei Yee

N1 - Funding Information: We thank Benz Chan (Biology and Chemistry Department, City University of Hong Kong) for his assistance in operating the GC-FPD. This study was primarily supported by an FRG grant from HKBU to JWQ. KMYL was partially supported by the Area of Excellence Scheme under the University Grants Committee of Hong Kong SAR China (Project No. AoE/P-04/2004) and by the Research Grants Council through a General Research Fund (Project No. HKU 7034/07P).

PY - 2011

Y1 - 2011

N2 - 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.

AB - 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.

KW - Antifouling paints

KW - Endocrine disruption

KW - Neogastropod

KW - TBT

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ER -

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

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