Canada's national aquatic biological specimen bank and database

McGoldrick, Daryl J.; Clark, Mandi G.; Keir, M.J.; Backus, Sean; Malecki, Mary M.

doi:10.1016/j.jglr.2010.02.011

Cited by 37 publications

(26 citation statements)

References 15 publications

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“…These water bodies are routinely monitored as part of Environment Canada's National -Fish Contaminants Monitoring and Surveillance Program. Fish were collected in 2010 and 2011 following the protocols used by the National Aquatic Biological Specimen Bank (NABSB) (McGoldrick et al, 2010).…”

Section: Fish Collectionmentioning

confidence: 99%

Current status of short- and medium chain polychlorinated n-alkanes in top predatory fish across Canada

et al. 2015

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Section: Fish Collectionmentioning

confidence: 99%

Current status of short- and medium chain polychlorinated n-alkanes in top predatory fish across Canada

et al. 2015

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“…Figure 1 shows the location of each site. Entire fish were homogenized and frozen at À808C [26]. Blood was sampled by caudal puncture, collected in heparinized vials kept on ice, and centrifuged within 1 h of collection.…”

Section: Sampling Protocolmentioning

confidence: 99%

Polychlorinated biphenyls and their hydroxylated metabolites in wild fish from wheatley Harbour Area of Concern, Ontario, Canada

Gilroy

Muir

McMaster

et al. 2012

Environmental Toxicology and Chemistry

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Whole-body polychlorinated biphenyls (ΣPCBs) and plasma hydroxylated PCBs (OH-PCBs) concentrations were determined in brown bullhead (Ameiurus nebulosus) from Wheatley Harbour, Ontario, Canada. Elevated ΣPCBs in Wheatley Harbour are suspected to have originated from industrial waste disposal and/or discharges from nearby fish processing through discarding of fish remains. Mean ΣPCB concentrations in brown bullhead from Wheatley Harbour were approximately 250 ng/g wet weight compared with approximately 40 ng/g wet weight for brown bullhead from the reference sites, Hillman Marsh and Turkey Creek (both in Ontario, Canada). A significant relationship was found between the concentrations of non-ortho and mono-ortho PCB concentrations (toxic equivalents) and liver mixed-function oxygenase in brown bullhead (r = 0.74, p < 0.001). Plasma OH-PCB concentrations were greater in Wheatley Harbour brown bullhead than in those from Hillman Marsh (3.6 vs 1.5 ng/g wet wt, p < 0.01), and were detected infrequently in those from Turkey Creek (0.1 ng/g wet wt, n = 2). The OH-PCB congeners most frequently detected were 4'-OH-CB172, 3'-OH-CB180, 4-OH-CB187, 4-OH-CB146, 3-OH-CB138, and 4-OH-CB130, which are structurally similar to the thyroid hormones. To test the hypothesis of fish waste as the cause of the observed PCB contamination of Wheatley Harbour brown bullhead, a principal component analysis (PCA) was used to compare the brown bullhead PCB congener data with equivalent data for Lake Erie walleye, Lake Erie sediment, and industrial Aroclor mixtures. The relative proportions of each Aroclor mixture were estimated using the conjugated gradient method. The high similarity between the congener signatures for Lake Erie walleye and Wheatley Harbour brown bullhead supports the hypothesis of contamination from the fish processing industry.

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“…The FCMSP collects fish from 10 locations annually across the 4 Canadian Great Lakes. A detailed description of monitoring locations, collection methods and laboratory processing procedures can be found in McGoldrick et al (2010). Mercury analyses were conducted at the National Laboratory for Environmental Testing (NLET) in Burlington, Ontario, using NLET method 2801 (Environment Canada 2008), in which Hg is determined by CVAAS following acid digestion of the tissue samples.…”

Section: Chemical Analysismentioning

confidence: 99%

Current concentrations and spatial and temporal trends in mercury in Great Lakes Herring Gull eggs, 1974–2009

et al. 2011

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Current concentrations and spatial and temporal trends of total mercury (Hg) were assessed in eggs of the Herring Gull (Larus argentatus) over the period 1974-2009 at 15 sites in the Great Lakes: 2-3 sites per lake and one site in each of 3 connecting channels. Current (2009) concentrations ranged from 0.064 μg/g (wet weight) at Chantry Island (Lake Huron) to 0.246 μg/g at Middle Island (Lake Erie). There were significant inter-colony differences in mean Hg concentrations (2005-2009). Mercury concentrations at 14 of 15 sites declined from 23 to 86% between when it was first measured (usually 1974) and 2009. Declining temporal trends over the entire period (1974-2009) were significant at 10 of the 15 sites. On the other hand, there were no significant trends in mercury over the last 15 years. In the early years, declines of Hg in Herring Gull eggs tracked those in Rainbow Smelt (Osmerus mordax) in most Great Lakes. More recently, declines in gull eggs were more evident than in smelt and may be partially explained by temporal changes in the gull diet. When gull Hg data were adjusted for temporal changes in the gull diet, as inferred from stable nitrogen isotope values in eggs, significant declines in egg mercury levels were found only at 4 of 15 sites. Overall, Hg concentrations have declined in Great Lakes Herring Gull eggs over the period 1974-2009 but changes in the gull diet may be contributing, in part, to those declines. Examination of contaminant temporal trends in multiple indicator species will ensure accurate inferences regarding contaminant availability in the environment.

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Canada's national aquatic biological specimen bank and database

Cited by 37 publications

References 15 publications

Current status of short- and medium chain polychlorinated n-alkanes in top predatory fish across Canada

Current status of short- and medium chain polychlorinated n-alkanes in top predatory fish across Canada

Polychlorinated biphenyls and their hydroxylated metabolites in wild fish from wheatley Harbour Area of Concern, Ontario, Canada

Current concentrations and spatial and temporal trends in mercury in Great Lakes Herring Gull eggs, 1974–2009

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