A Field study of the impact on oysters of tributyltin introduction and removal in a pristine lake

Scammell, Marcus; Batley, Graeme E.; Brockbank, Chris I.

doi:10.1007/bf01055916

Cited by 16 publications

(13 citation statements)

References 5 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…It should be noted that analysis of TBT accumulation in the tissue of laboratory-treated oysters showed rather high concentrations of dibutyltin (71-79% of total Sn) when compared to those of mono-and tri-butyltin (Table 2). In seawater, TBT has a short half-life of approximately six days, and typically undergoes photolytic or microbial degradation into di-and mono-butyltins 44,45 . Therefore, it is likely that TBT had already begun to degrade into its byproducts (mono-and di-butyltin) within the treatment tanks by 8 days of exposure, resulting in the bioaccumulation of higher percentages of mono-and di-butyltins relative to TBT concentrations.…”

Section: Discussionmentioning

confidence: 99%

Combined and independent effects of hypoxia and tributyltin on mRNA expression and physiology of the Eastern oyster (Crassostrea virginica)

Barnett

Gledhill

Griffitt

et al. 2020

Sci Rep

View full text Add to dashboard Cite

Oyster reefs are vital to estuarine health, but they experience multiple stressors and globally declining populations. This study examined effects of hypoxia and tributyltin (TBT) on adult Eastern oysters (Crassostrea virginica) exposed either in the laboratory or the field following a natural hypoxic event. In the laboratory, oysters were exposed to either hypoxia followed by a recovery period, or to hypoxia combined with TBT. mRNA expression of HIF1-α and Tβ-4 along with hemocyte counts, biomarkers of hypoxic stress and immune health, respectively, were measured. In field-deployed oysters, HIF1-α and Tβ-4 expression increased, while no effect on hemocytes was observed. In contrast, after 6 and 8 days of laboratory-based hypoxia exposure, both Tβ-4 expression and hemocyte counts declined. After 8 days of exposure to hypoxia + TBT, oysters substantially up-regulated HIF1-α and down-regulated Tβ-4, although hemocyte counts were unaffected. Results suggest that hypoxic exposure induces immunosuppression which could increase vulnerability to pathogens. Oysters are important ecosystem engineers, providing essential fish habitats that are vital to the health of many estuarine ecosystems worldwide 1, 2. Oyster reefs provide numerous critical ecosystem services, including enhancing biodiversity, improving water quality, serving as nursery habitat for commercially important fisheries, stabilizing shorelines, and providing a significant economic resource for coastal communities 2-6. Despite their ecological and economic importance, it is estimated that oyster populations have suffered losses of approximately 85% worldwide in recent years, classifying oyster reefs as one of the most heavily impacted ecosystems in the world 3. Extensive restoration efforts are currently underway to restore oyster reefs in the Gulf of Mexico and other areas of the United States, where these ecosystems once flourished. However, the success of these restoration efforts has lagged far behind that of other estuarine ecosystems 7. Historically, overharvesting played a significant role in the decline of oyster populations 8 , but oyster reef recovery and resilience are also limited by poor water quality, disease, and predation 9,10. In addition, environmental contaminants (e.g., metals, pharmaceuticals, agricultural runoff) have the potential to bioaccumulate in these filter-feeding organisms 11,12. Due to their proximity to land and sources of freshwater, estuaries often experience large fluctuations in environmental conditions, such as temperature, salinity, and dissolved oxygen (DO), that can have negative short-term impacts on oyster reefs 13. The complexity of estuarine systems may result in oysters often facing combinations of stressors simultaneously, and these can have greater detrimental effects than each stressor independently 13,14. Therefore, understanding the impacts of multiple stressors, both alone and in combination, is essential to determine their impacts on aquatic organisms.

show abstract

Section: Discussionmentioning

confidence: 99%

Combined and independent effects of hypoxia and tributyltin on mRNA expression and physiology of the Eastern oyster (Crassostrea virginica)

Barnett

Gledhill

Griffitt

et al. 2020

Sci Rep

View full text Add to dashboard Cite

show abstract

“…A paucity of TBT residue data exists for seafood caught commercially from traditional fishery grounds. However, several studies (Batley, 1989;Kannan, Tanabe, and Tatsukawa, 1995;Kannan et al, 1996;Krone et al, 1989;Krone, Stein and Varanasi, 1996;and Scammell, Batley, and Brockbank, 1991) have reported concentrations for species collected for food, either from the open ocean or from another location used for commercial harvest of seafood. In addition, Cardwell, Simmonds and Keithly (1999) present results from a market basket survey of the U.S. in 1989 and 1990.…”

Section: Discussionmentioning

confidence: 98%

Tributyltin in Seafood from Asia, Australia, Europe, and North America: Assessment of Human Health Risks

Keithly¹,

Cardwell

Henderson

1999

Human and Ecological Risk Assessment: An International Journal

View full text Add to dashboard Cite

This study reports concentrations of tributyltin in seafood collected from eight sites around the world and assesses potential human health risks. Samples of fish, crustaceans, cephalopods (i.e., squid), and bivalve molluscs were purchased from markets in two Asian cities, one Australian city, three European cities, and two North American cities. Samples were then analyzed for tributyltin, and the chemical concentrations observed were used to calculate potential human health risks from consumption of market-bought seafood. TBT residues in marketable seafood were consistent worldwide, averaging 185 ng/g dry weight. For different reasons, pelagic fish and bivalve molluscs tended to have slightly higher residues than squid, demersal fish (sole/flounder) and crustacea. TBT concentrations in seafood from France and Korea were at least twice as high as those from the other countries. Based on average per capita seafood consumption rates for each country, the amounts of TBT ingested did not exceed proposed thresholds for chronic effects, suggesting negligible risks to the average consumer.

show abstract

“…The desired effect of impairing larval settlement, the main reason for the success of organotin compounds, rapidly spread from ship hulls to other environments. Toxic effects were demonstrated in non-target invertebrates (Laughlin and French, 1980;Kelly et al, 1990;Scammell et al, 1991) and in both micro-and macroalgae (Wong et al, 1982;Beaumont and Newman, 1986). More recently, TBT has been found in some marine vertebrates, including fish (Kannan and Falandysz, 1997), seabirds (Guruge et al, 1996) and marine mammals (Iwata et al, 1994).…”

Section: The Impact Of Tbt On the Marine Environmentmentioning

confidence: 99%

Environmental impact of antifouling technologies: state of the art and perspectives

Terlizzi

Fraschetti

Gianguzza

et al. 2001

Aquatic Conservation

119

View full text Add to dashboard Cite

ABSTRACT1. Marine fouling affects most man-made surfaces temporarily or permanently immersed in the sea, resulting in significant (or substantial) economic costs. Intense research is aimed at preventing or reducing fouling.2. The most widespread solution to avoid fouling formation is to make surfaces unsuitable for settlers, coating them with antifouling (AF) paints containing toxic compounds. Most AF agents (e.g. tributyltin, (TBT)) have undesirable effects on non-target species, including commercially important organisms.3. To date, the use of TBT in AF paints has been restricted (but not prohibited) in a number of countries and new biocides are in use.4. The environmental problems posed to marine systems by AF technologies are here briefly reviewed.5. New approaches focusing on alternatives to the use of biocidal AF paints are also considered and discussed. THE PROBLEM OF FOULING AND ITS PREVENTIONThe organisms that settle on man-made surfaces are known as fouling. They come from the water column as propagules searching for a hard substrate to complete their life-cycle. The development of fouling begins as soon as a suitable substrate is immersed in the sea. Surfaces are immediately conditioned by organic molecules, a prerequisite for the settlement of microfouling, including bacteria, fungi and protozoans. The development of fouling communities proceeds with the establishment of macrofoulers such as macroalgae,

show abstract

A Field study of the impact on oysters of tributyltin introduction and removal in a pristine lake

Cited by 16 publications

References 5 publications

Combined and independent effects of hypoxia and tributyltin on mRNA expression and physiology of the Eastern oyster (Crassostrea virginica)

Combined and independent effects of hypoxia and tributyltin on mRNA expression and physiology of the Eastern oyster (Crassostrea virginica)

Tributyltin in Seafood from Asia, Australia, Europe, and North America: Assessment of Human Health Risks

Environmental impact of antifouling technologies: state of the art and perspectives

Contact Info

Product

Resources

About