Tributyltin in scottish sea lochs, as indicated by degree of imposex in the dogwhelk, Nucella lapillus (L.)

Davies, Ian; Bailey, S.K.; Moore, D.C.

doi:10.1016/0025-326x(87)90320-1

Cited by 53 publications

(16 citation statements)

References 6 publications

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“…Many reports have been published on imposex in Nucella lapillus in the environment and its use as an indicator for TBT contamination (e.g. Davies et al 1987, Gibbs et al 1987, h4inchin et al 1995. While there is little controversy about a correlation of high degrees of imposex in N. lapillus and elevated concentrations of TBT in the coastal environment, the discussion of the results of this study and previous investigations showed considerable uncertainty about the association of lower degrees of imposex and TBT contamination.…”

Section: Discussionmentioning

confidence: 99%

Sublethal effects of tributyltin oxide on the dogwhelk Nucella lapillus

Davies¹,

Harding²,

Bailey³

et al. 1997

Mar. Ecol. Prog. Ser.

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ABSTRACT. The sublethal effects of tributyltin oxide (TBT) at concentrations of 2 to 128 ng 1-' in sea water on imposex development, weight, activity and feeding rate of the adult common dogwhelk Nucella lapillus (L.) were investigated over 12 mo under conditions conforming to the UK Good Laboratory Practice standard. TBT promoted irnposex development, with a no-effect concentration of c 2 ng I-' for exposure of 6 mo or more. The degree of imposex d~d not exceed levels w h~c h caused sterility in any treatment group. Low levels of lmposex in controls showed seasonal changes in intensity. Seasonal patterns were overridden by 2 ng TBT 1-' or more. The low numbers of mortalities observed were not related to TBT concentration. The activity of dogwhelks (tendency to climb the tank walls) varied seasonally, reflecting natural behaviour patterns of wild populations. TBT exposure had no effect on this activity The feeding rate (predation on mussels Mytilus edulis) showed marked seasonal vanations in all tanks, but there was no correlation with TBT exposure. Exposure to TBT had no effect on the tissue weight of male dogwhelks, but the body weight of females was negatively correlated with TBT after 12 mo exposure. Mean bioconcentration factors (water to tissue of dogwhelks) ranged from 7400 to 25000, and decreased with increasing TBT exposure concentration. It is est~mated that the feed mussels accounted for approxinlately 40% of the TBT accumulated by the dogwhelks.

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Section: Discussionmentioning

confidence: 99%

Sublethal effects of tributyltin oxide on the dogwhelk Nucella lapillus

Davies¹,

Harding²,

Bailey³

et al. 1997

Mar. Ecol. Prog. Ser.

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“…penis and vas deferens) in female gastropods, has now been widely recognized. 7,8 The effects of imposex vary depending on the species. 1 This deformity is specifically caused by tributyltin (TBT), a main ingredient of marine antifouling paints, at an ambient concentration of just a few nanograms per litre.…”

Section: Introductionmentioning

confidence: 99%

First record of butyltin body burden and imposex status in Hexaplex trunculus (L.) along the Tunisian coast

et al. 2009

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We have assessed for the first time the current status of tributyltin (TBT) contamination in Hexaplex trunculus along Tunisian coastal waters. Two sampling campaigns have been performed in July 2004 and July 2007 at seven different sites. The snails were analyzed for imposex status, i.e. Imposex incidence, Relative Penis Length Index (RPLI) and Vas Deferens Sequence Index (VDSI), followed by the quantification of butyltins in their tissues. Imposex was detected in six populations from the 2004 samples and in five populations from the 2007 samples. The imposex incidence ranged from 0 (no imposex) to 100%, the RPLI from 0 to 56.7 and the VDSI from 0 to 4.4. TBT was also detected in six populations in 2004 and five populations in 2007. The concentrations ranged from 1.5 to 73.7 ng Sn g(-1) dw in 2004 samples and from 1.2 to 23.9 ng Sn g(-1) dw in 2007 samples. Temporal comparison of the data indicates some evidence of imposex recovery in most affected populations. Improvements in reduced body concentrations of TBT in both sexes were also seen in most stations. These TBT concentrations were only significantly correlated to imposex indices in samples from 2007 (r > 0.8, n = 7, p < 0.05). The present results will serve as a reference for long-term monitoring of butyltin contamination in the Tunisian coast, where TBT restrictions were not yet implemented.

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“…(Davies et al, 1987;Evans, 1999;Nicholson et al, 1998) based on experimental observations have proposed that TBT impact would be restricted to sites directly under influence of specific sources showing, therefore, little tendency to migrate over long distances from the input area. Our results seems to confirm this observation.…”

Section: Figure 4bmentioning

confidence: 99%

Occurrence of imposex in Thais haemastoma: possible evidence of environmental contamination derived from organotin compounds in Rio de Janeiro and Fortaleza, Brazil

et al. 2002

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There are indications that the widespread use of organotin compounds (TBT and TPT) as antifoulings, as stabilizers in plastic and as pesticides, has severely affected several species of marine organisms. The most striking effect of TBT and TPT as hormonal disruptors is the development of male organs in females of gastropods, currently denominated imposex. This syndrome can lead to the sterilization and death of affected organisms. The present work gives an overview of the present state of knowledge on imposex occurrence and reports results of a survey conducted in Guanabara Bay, Rio de Janeiro and in several sites along the coast of Fortaleza, Ceará State. Different stages of imposex development were verified in this survey, however, the most prominent levels appeared associated to known spot sources of TBT and TPT.

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Tributyltin in scottish sea lochs, as indicated by degree of imposex in the dogwhelk, Nucella lapillus (L.)

Cited by 53 publications

References 6 publications

Sublethal effects of tributyltin oxide on the dogwhelk Nucella lapillus

Sublethal effects of tributyltin oxide on the dogwhelk Nucella lapillus

First record of butyltin body burden and imposex status in Hexaplex trunculus (L.) along the Tunisian coast

Occurrence of imposex in Thais haemastoma: possible evidence of environmental contamination derived from organotin compounds in Rio de Janeiro and Fortaleza, Brazil

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