Surveys of the epibenthos of the Crouch Estuary (UK) in relation to TBT contamination

Rees, H.L.; Waldock, R.; Matthiessen, Peter; Pendle, M.A.

doi:10.1017/s0025315498000241

Cited by 20 publications

(7 citation statements)

References 17 publications

(14 reference statements)

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“…The Colne Estuary oyster fishery owned by Colchester Borough Council is leased to a single tenant, Colchester Oyster Fishery Ltd (COF), who controls both the shellfish and finfish fishery in the Colne Estuary to a position offshore of Colne Point (Table 1, Figure 1). Local oystermen (A. Bird, R. Hayman, BOA; C. Kerrison, G. Larkin, COF) confirm that the fisheries have not recovered to pre-1962 levels, with subsequent challenges including TBT pollution in the 1970s (Rees et al ., 1999, 2001), the accidental introduction of the protozoan parasite Bonamia ostreae (Laing et al ., 2005) and losses of suitable settlement substratum. The Colne estuary fishery (zone A) has seen some minor attempts at restocking and minimal harvesting, and no sustained aquaculture practices since the 1970s.…”

Section: Introductionmentioning

confidence: 99%

Strongholds of Ostrea edulis populations in estuaries in Essex, SE England and their association with traditional oyster aquaculture: evidence to support a MPA designation

et al. 2019

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The flat oyster Ostrea edulis has declined significantly in European waters since the 1850s as a result of anthropogenic activity. Ostrea edulis was designated a UK Biodiversity Action Plan Species and Habitat in 1995, and as a Feature of Conservation Importance (FOCI) within the UK Marine & Coastal Access Act 2009. To promote the recovery of oyster beds, a greater understanding of its abundance and distribution is required. Distribution of O. edulis across the proposed Blackwater, Crouch, Roach and Colne MCZ in Essex was determined between 2008 and 2012. Ostrea edulis were present in four estuary zones; with highest sample abundance in the Blackwater and Ray Sand zones. Size structure of populations varied, with the Ray Sand and Colne zones showing a significant lack of individuals with shell height <39 mm. Ostrea edulis occurred in highest number on shell substratum, followed by silty sediments. There were no significant associations between O. edulis abundance or size structure with water column Chl a, suspended solids, oxygen, nitrate or ammonium concentrations, temperature or pH. Highest abundance and most equitable population shell-size distribution for O. edulis were located within, or adjacent to, actively managed aquaculture zones. This suggests that traditional seabed management contributed to the maintenance or recovery of the species of conservation concern. Demonstration that the Essex estuaries were a stronghold for Ostrea edulis in the southern North sea area led to the designation of the Blackwater, Crouch, Roach and Colne estuaries Marine Conservation Zone in 2013.

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Section: Introductionmentioning

confidence: 99%

Strongholds of Ostrea edulis populations in estuaries in Essex, SE England and their association with traditional oyster aquaculture: evidence to support a MPA designation

et al. 2019

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“…An illustration of this gap in the guideline “armory” is the well‐known case of the tributyltin‐based antifouling paints which have caused masculinization of at least 150 proso‐branch mollusk species worldwide, have decimated many mollusk populations, have severely damaged the oyster‐growing industry, and have caused severe losses of invertebrate biodiversity in shallow coastal waters (Matthiessen and Gibbs 1998; Matthiessen et al 1999; Rees et al 1999, 2001; Waldock et al 1999). These endocrine‐disrupting impacts would almost certainly not be predicted or adequately quantified by any of the new guidelines being developed by OECD.…”

Section: Introductionmentioning

confidence: 99%

An assessment of endocrine disruption in mollusks and the potential for developing internationally standardized mollusk life cycle test guidelines

Matthiessen¹

2008

Integr Envir Assess & Manag

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This paper summarizes what is known about the endocrine systems of mollusks and how they can be disrupted by exogenous substances. It then examines the various possibilities for using mollusk-based toxicity tests to detect and assess the environmental risks of endocrine-disrupting chemicals (EDCs). It is concluded that there are no internationally standardized tests with mollusks available at present that are suitable for assessing the risks of long-term exposure to EDCs but that several published methods show potential. At the present state of knowledge, the most promising mollusk species for use in partial life cycle testing is probably the fresh- and brackish-water mesogastropod, Potamopyrgus antipodarum, which is known to be responsive to both direct and indirect androgens and to estrogens (and their mimics). Less experience of full life cycle testing exists with mollusks, but the freshwater pulmonate gastropod Lymnaea stagnalis at present offers the best possibility for a practical procedure. In both cases, there is a need for substantial test optimization and validation before these procedures could form the basis of international guidelines.

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“…An illustration of this gap in the suite of available guidelines is the well-known case of the tributyltin-based antifouling paints which have caused masculinisation of at least 150 prosobranch mollusc species worldwide, have decimated many mollusc populations, have severely damaged the oyster-growing industry, and have caused severe losses of invertebrate biodiversity in shallow coastal waters (Matthiessen and Gibbs, 1998;Rees et al, 1999Rees et al, , 2001Waldock et al, 1999). These impacts have included relatively mild effects on crustaceans, but no known effects on vertebrates.…”

Section: Purpose Of the Drpmentioning

confidence: 99%

Detailed Review Paper (DRP) on Molluscs Life-cycle Toxicity Testing

2014

OECD Series on Testing and Assessment

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No.107 Preservative treated wood to the environment for wood held in storage after treatment and for wooden commodities that are not cover and are not in contact with ground. (2009) No.108 Report of the validation of the Hershberger Bioassay (weanling model) (2009) No. 109 Literature review on the 21-Day Fish Assay and the Fish Short-Term Reproduction Assay (2009) No. 110 Report of the validation peer review for the weanling Hershberger Bioassay and agreement of the working of national coordinators of the test guidelines programme on the follow-up of this report (2009) No. 111 Report of the Expert Consultation to Evaluate an Estrogen Receptor Binding Affinity Model for Hazard Identification (2009) No. 112 The 2007 OECD List of High Production Volume Chemicals (2009) No. 113 Report of The Focus Session On Current And Forthcoming Approaches For Chemical Safety And Animal Welfare (2010) No. 114 Performance Assessment of Different Cytotoxic and Cytostatic Measures for the In Vitro Micronucleus Test (MNVIT): Summary of results in the collaborative trial (2010) No. 115 Guidance Document on the Weanling Hershberger Bioassay in Rats: A Short-term Screening Assay for (Anti)E About the OECDThe Organisation for Economic Co-operation and Development (OECD) is an intergovernmental organisation in which representatives of 31 industrialised countries in North and South America, Europe and the Asia and Pacific region, as well as the European Commission, meet to co-ordinate and harmonise policies, discuss issues of mutual concern, and work together to respond to international problems. Most of the OECD's work is carried out by more than 200 specialised committees and working groups composed of member country delegates. Observers from several countries with special status at the OECD, and from interested international organisations, attend many of the OECD's workshops and other meetings. Committees and working groups are served by the OECD Secretariat, located in Paris, France, which is organised into directorates and divisions. IV.Although there are some similarities between the endocrine systems of vertebrates and molluscs, the lack of knowledge about how EDCs act in molluscs currently prevents the use of mollusc-based tests as surrogates for tests with aquatic vertebrates such as fish.V. Given our relatively poor understanding of molluscan endocrinology, it is not currently possible to recommend the development of mollusc-based screening tests for the identification of EDCs. On the other hand, we are now in a position to start standardising apical mollusc tests involving partial or full lifecycle exposures. In principle, these are expected to be responsive to any chemicals (EDCs or nonEDCs) with activity in molluscs, even though they may not provide diagnostic information on modes of action (MoA). VI.The review recommends three apical test procedures for optimisation and possible validation. The first is a partial life cycle (PLC) test with the freshwater gastropod Potamopyrgus antipodarum, the second is a full li...

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Surveys of the epibenthos of the Crouch Estuary (UK) in relation to TBT contamination

Cited by 20 publications

References 17 publications

Strongholds of Ostrea edulis populations in estuaries in Essex, SE England and their association with traditional oyster aquaculture: evidence to support a MPA designation

Strongholds of Ostrea edulis populations in estuaries in Essex, SE England and their association with traditional oyster aquaculture: evidence to support a MPA designation

An assessment of endocrine disruption in mollusks and the potential for developing internationally standardized mollusk life cycle test guidelines

Detailed Review Paper (DRP) on Molluscs Life-cycle Toxicity Testing

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