Imposex and butyltin concentrations in Bolinus brandaris (Gastropoda: Muricidae) from the northern Tunisian coast

被引:17
|
作者
Abidli, Sami [1 ]
Lahbib, Youssef [1 ]
El Menif, Najoua Trigui [1 ]
机构
[1] Univ 7th November Carthage, Fac Sci Bizerta, Lab Environm Biomonitoring, Zarzouna 7021, Bizerta, Tunisia
关键词
TBT; Gastropod; Bioindicator; Lagoon of Bizerta; Gulf of Tunis; HEXAPLEX-TRUNCULUS GASTROPODA; NUCELLA-LAPILLUS; MORPHOLOGICAL EXPRESSION; REPRODUCTIVE FAILURE; ORGANOTIN COMPOUNDS; DOG-WHELK; TRIBUTYLTIN; TBT; POLLUTION; TRIPHENYLTIN;
D O I
10.1007/s10661-010-1640-z
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
The imposex incidence and butyltin concentration i.e. tributyltin with its di- and mono-substituted metabolites were investigated in the muricid Bolinus brandaris sampled from two sites on the northern Tunisian coast (the Lagoon of Bizerta and the small Gulf of Tunis). Both populations had imposex, with stages of imposex development varying between VDS 1 and VDS 4.3. All imposex indices (imposex frequency (I %), female penis length, female vas deferens length, vas deferens sequence index, relative penis length index, and vas deferens length index) were significantly higher in snails from the Bizerta lagoon. Butyltins were detected in the whole tissues of both sexes from the two sites. TBT levels were higher in gastropods collected from the lagoon of Bizerta (12.65 +/- 1.48 ng Sn g (-aEuro parts per thousand 1) dw in female and 15.21 +/- 1.13 ng Sn g (-aEuro parts per thousand 1) dw in male) than in individuals from the Gulf of Tunis (10.71 +/- 1.26 ng Sn g (-aEuro parts per thousand 1) dw in female and 11.65 +/- 1.63 ng Sn g (-aEuro parts per thousand 1) dw in male), corroborating the data of imposex analysis. These results confirmed that B. brandaris could be used as a bioindicator species of butyltin pollution in the studied areas. In addition, this study provided baseline data that could serve for long-term monitoring of TBT pollution in Tunisia, since legislation to reduce the use of TBT-based antifouling paints has not been introduced yet.
引用
收藏
页码:375 / 384
页数:10
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