Re-colonisation and recovery of populations of dogwhelks Nucella lapillus (L.) on shores formerly subject to severe TBT contamination

Birchenough, A.C.; Evans, Stewart M.; Moss, C; Welch, Rachel

doi:10.1016/s0025-326x(01)00308-3

Cited by 38 publications

(26 citation statements)

References 40 publications

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“…The imposex survey of Nucella lapillus showed that the populations have suffered increasingly less female sterility and the populations have grown and colonised adjacent rocks at some sampling stations. The recovery of N. lapillus populations at Stns 29 and 39, where the species had disappeared, and the arrival of a new population between Stns 26 and 27 shows that the species is able to re-colonise areas where TBT pollution does not exceed the level that induces sterilisation of every female; a similar pattern was also reported from TBT-contaminated areas in Scotland (Birchenough et al 2002b).…”

Section: Imposex In Nw Brittanysupporting

confidence: 62%

Imposex in Nucella lapillus: a ten year survey in NW Brittany

Huet¹,

Paulet²,

Clavier³

2004

Mar. Ecol. Prog. Ser.

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Tributyltin (TBT) pollution has been assessed in NW Brittany since 1992 using the bioindicator imposex in Nucella lapillus. The Bay of Brest is highly polluted by TBT and the outgoing water mass has contaminated the adjacent NW coasts. However environmental conditions have been improving in NW Brittany. The decrease in TBT pollution is most likely due to the reformulated antifouling paints (with slower leaching rates or TBT-free) that are used for civil and military careening activities in the Bay of Brest. An increase in imposex levels in 1998 could have been due to the launching of the aircraft carrier 'Charles de Gaulle'. It remains unknown when imposex levels reached their maximum because of the lack of annual surveys in 1996, 1997 and 1999. This underscores the need for annual surveys when using imposex as a monitoring tool.

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Section: Imposex In Nw Brittanysupporting

confidence: 62%

Imposex in Nucella lapillus: a ten year survey in NW Brittany

Huet¹,

Paulet²,

Clavier³

2004

Mar. Ecol. Prog. Ser.

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“…In 2002, only two individuals of N. lapillus were found outside the routine sampling area. The prosobranch N. lapillus is generally regarded as one of the most sensitive species, which becomes sterile at even low TBT-concentrations (Gibbs et al 1988;Birchenough et al 2002). It is known that the TBT contaminations of the surface water around Helgoland did not change considerably between the application ban of the use of anti-fouling paints for small vessels and the end of the 1990s (Watermann 1993;Kalbfus 1997).…”

Section: Discussionmentioning

confidence: 99%

Changes in the macrozoobenthos of the intertidal zone at Helgoland (German Bight, North Sea): a survey of 1984 repeated in 2002

Reichert

Búchholz

2006

Helgol Mar Res

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Changes in the presence and absence of invertebrates as well as in species conspicuousness were documented in a rocky intertidal community based on surveys in 1984 and 2002. In 2002 six vertically and/or morphologically different stations of an intertidal platform were sampled. Five of these six habitats had already been surveyed in 1984. Replicating precisely the method of the first assessment, presence/absence changes as well as changes in species conspicuousness of 83 invertebrate species were documented, indicating that this intertidal community changed considerably during the 18-year interval. Compared with the study in 1984, 27 species newly appeared, whereas 32 species disappeared. Furthermore, 16 species increased in conspicuousness, whereas eight invertebrates decreased. The total number of species in 2002 was 154 versus 158 in 1984. Although algal species were not recorded as thoroughly as invertebrates, a massive decline in cover of Halidrys siliquosa was noted. Conversely, two invasive algal species became established after 1984, Sargassum muticum (since 1988), a cosmopolitan fucoid alga that prefers shallow subtidal areas for colonization, and Mastocarpus stellatus (introduction in the 1980s) that particularly colonized areas in the mid intertidal. In 1984 the mid intertidal zone was dominated by the brown alga Fucus serratus, whereas in 2002 the blue mussel Mytilus edulis and the periwinkle Littorina littorea were the most conspicuous organisms. Annual mean sea surface temperature (BAH measurements) warmed by 1.1°C over the past four decades. Range-related community shifts, introductions of non-indigenous species and the input of pollutants, are considered to explain long-term ecological changes in the invertebrate community at Helgoland.

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“…2,3 Imposex in the dog-whelk Nucella lapillus (L.) has been intensively used as a biomarker of TBT pollution levels on North Atlantic rocky shores. 4 In 1998, the use of this species as a bioindicator was recommended in OSPAR Joint Assessment and Monitoring Program (JAMP) guidelines, 5 mainly due to the species widespread distribution (from northern Russia to southern Portugal), restricted power of dispersion (absence of a planktonic larval phase), limited adult mobility 6 and high sensitivity to TBT pollution (imposex induction occurs at very low concentrations in water: <0.5 ng Sn l À1 ). 7 During the 1980s, extreme cases of complete female functional sterilization, population declines and extinctions were among the reported consequences of TBT pollution.…”

Section: Introductionmentioning

confidence: 99%

Imposex levels and tributyltin pollution in Ria de Aveiro (NW Portugal) between 1997 and 2007: evaluation of legislation effectiveness

et al. 2009

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Nucella lapillus imposex levels and organotin (OT) concentrations in water and female tissues were measured in samples collected from the Ria de Aveiro (NW Portugal) between 1997 and 2007. Vas deferens sequence index (VDSI), relative penis size index (RPSI), mean female penis length (FPL) and percentage of imposex affected females (%I) were used to determine imposex levels at each site. A significant temporal decline in imposex intensity was observed during the assessed period. Imposex decrease was evident after 2003 although improvements were most notable from 2005 to 2007, probably due to the implementation of the EU Council Regulation no.782/2003 forbidding further application of tributyltin (TBT) antifouling on vessels carrying EU flags. Despite these improvements, OT analysis in N. lapillus female tissues and water indicate there are still recent TBT inputs into the study area.

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Re-colonisation and recovery of populations of dogwhelks Nucella lapillus (L.) on shores formerly subject to severe TBT contamination

Cited by 38 publications

References 40 publications

Imposex in Nucella lapillus: a ten year survey in NW Brittany

Imposex in Nucella lapillus: a ten year survey in NW Brittany

Changes in the macrozoobenthos of the intertidal zone at Helgoland (German Bight, North Sea): a survey of 1984 repeated in 2002

Imposex levels and tributyltin pollution in Ria de Aveiro (NW Portugal) between 1997 and 2007: evaluation of legislation effectiveness

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