Bioaccumulation and depuration of Zn and Cd in mangrove oysters (Crassostrea rhizophorae, Guilding, 1828) transplanted to and from a contaminated tropical coastal lagoon

Amaral, Maria Clara Rebouças do; Rebelo, Mauro de Freitas; Torres, João Paulo Machado; Pfeiffer, Wolfgang C.

doi:10.1016/j.marenvres.2004.05.004

Cited by 36 publications

(9 citation statements)

References 31 publications

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“…Silva et al (2003) concluded that much of the Curimataú can be considered uncontaminated by trace metals. Comparative literature data for C. rhizophorae from Zn, Cu and Cd-contaminated sites in Brazil (Table 10) indicate that although the Potengi is metal contaminated in comparison with the Curimataú , it is not as severely contaminated as Cotegipe Channel, Arata Bay (Zn, Cu, Cd -Wallner-Kersanach et al, 2000) or Sepetiba Bay (Reboucas do Amaral et al, 2005).…”

Section: Discussionmentioning

confidence: 99%

“…B. amphitrite, a fouling organism spread by anthropogenic activity, is particularly useful in this regard. There is, however, a relative lack of detailed information on potential biomonitors for use in tropical Atlantic South America with the possible exception of the mangrove oyster Crassostrea rhizophorae (Wallner-Kersanach et al, 2000;Silva et al, 2001Silva et al, , 2003Rebelo et al, 2003;Reboucas do Amaral et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

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Comparative biomonitors of coastal trace metal contamination in tropical South America (N. Brazil)

Silva

Smith

Rainbow

2006

Marine Environmental Research

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Comparative biomonitors of coastal trace metal contamination in tropical South America (N. Brazil)

Silva

Smith

Rainbow

2006

Marine Environmental Research

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“…Oyster and clam harvesting was prohibited from polluted waters from May 1st to August 15th and required that shellfish harvested in season were to be placed for at least 7 days in waters certified as unpolluted prior to be offered for sale as food. This process of relaying oysters subject from contaminated to clean water, called depuration, allows oysters to purge many contaminants, biological and others, from their tissues given sufficient time (Gardinali et al, 2004;Reboucas do Amaral et al, 2005;Nappier et al, 2008). However, demand for oysters increased in the 1909-1910 season, as the effects of the "panic" wore off and the largest harvest recorded since 1904 was seen, indicating stocks may have recovered during the years of lower demand.…”

Section: Varying Fishery Output Years 1887-1912mentioning

confidence: 99%

History of the Virginia Oyster Fishery, Chesapeake Bay, USA

Schulte

2017

Front. Mar. Sci.

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Oyster populations in Virginia's waters of Chesapeake Bay were lightly exploited until the early 1800s, when industrial fishery vessels first arrived, driven south from New England due to the collapse of northeastern oyster fisheries. Early signs of overexploitation and habitat degradation were evident by the 1850s. The public fishery, where oyster fishers harvest on state-owned bottom, rapidly developed after the Civil War and peaked in the early 1880s. Declines were noted by the late 1880s and eventually prompted the creation of Virginia's shell-planting and oyster-seed (young-of-the-year, YOY) moving repletion program in the 1920s. Despite management and increasing repletion efforts, the public fishery collapsed (annual landings <10% of peak historical landings) by the early 1960s. The private leasehold fishery, in which individuals rent areas outside the public grounds to plant shells and oysters for their own private use, surpassed the public fishery by the late 1920s, which partly masked this decline due to overfishing, habitat degradation, and diseases until both public and private fisheries completely collapsed in the mid-1980s after a third disease outbreak. This disease outbreak was likely related to warming waters. Overfishing and concomitant habitat loss followed a pattern of sequential population collapses observed in wild oyster fisheries along the Coastlines of the United States and worldwide. In recent years, expanding hatchery-produced seed oysters and aquaculture significantly increased leasehold landings. The wild fishery has also increased as disease resistance is developing naturally in the wild stocks, but remains ∼5% of peak landings. Improved management has assisted in this recent limited recovery, improving these efforts further by enhancing stock recovery via large no-take sanctuaries, among other actions, could assist in stock recovery.

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“…A few studies have been published on in-situ pollution impact experiments in open systems on larvae (Geffard et al 2001;Quiniou et al 2007) and juveniles (Arnold et al 2004;Bolton-Warberg et al 2007). Some in-situ studies in open systems were also made on adult oysters (Christl et al 2004), although many of these only dealt with bioaccumulation (Avery and Dunstan 1996;Amiard-Triquet et al 1998;Riedel and Valette-Silver 2002;Clara Reboucas do Amaral et al 2005). One possible complication of in-situ experiments using open systems is that shellfish are exposed to pollutants already found in the local environment in addition to any tested in an experiment.…”

Section: Introductionmentioning

confidence: 99%

In-situ microcosms, a tool for assessment of pesticide impacts on oyster spat (Crassostrea gigas)

et al. 2008

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Effects of the herbicide Basamaïs (bentazon) and the fungicide Opus (epoxiconazole) on oyster spat (Crassostrea gigas) were assessed using in-situ microcosms in a field experiment lasting 13 days. Six-week-old hatchery spat (mean size 1.1 mm), previously collected on PVC plates, was immersed in glass bottles filled with 200 mum filtered seawater. Bottles were maintained underwater at 6 m depth and their water content changed every other day. Growth, measured as shell area index increase, was 126 +/- 4% in the control bottles. While no growth differences were observed between control and individual pesticide treatments at 10 microg l(-1), oysters treated with a mix of 10 microg l(-1) Opus and 10 microg l(-1) Basamaïs showed a 50% growth reduction compared with the control (P < 0.0001), suggesting a synergistic effect of these contaminants. Laboratory controls in microcosms maintained in a water bath with filtered natural light, were not significantly different from in-situ microcosm controls in the field, for organic weight content or growth. This in-situ experiment in microcosms allowed us to conclude that: (1) oyster spat can achieve significant growth in bottles immersed in situ without supplementary food; (2) this microcosm system is reliable and easy to use for environmental toxicity tests with C. gigas spat; (3) such microcosm systems can also be run in a laboratory water bath instead of more technically difficult immersed field experiments; (4) the synergistic effect observed here, at a concentration simulating a peak agricultural runoff event, suggests that the impacts of pesticides could be a real threat for oysters in estuarine areas.

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Bioaccumulation and depuration of Zn and Cd in mangrove oysters (Crassostrea rhizophorae, Guilding, 1828) transplanted to and from a contaminated tropical coastal lagoon

Cited by 36 publications

References 31 publications

Comparative biomonitors of coastal trace metal contamination in tropical South America (N. Brazil)

Comparative biomonitors of coastal trace metal contamination in tropical South America (N. Brazil)

History of the Virginia Oyster Fishery, Chesapeake Bay, USA

In-situ microcosms, a tool for assessment of pesticide impacts on oyster spat (Crassostrea gigas)

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