Bioaccumulation of Toxaphene Congeners in the Lake Superior Food Web

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

“…Concentrations of other POPs are strongly correlated with % lipid, age, length and weight in lake trout (Muir et al, 2004). In this study, a significant negative correlation was observed for lipid normalized concentrations of sPCAs with length and weight (Fig.…”

“…The most recent studies of PCAs in the Canadian aquatic environment were conducted with samples collected in 2001 (Houde et al, 2008) and by Ismail et al with samples from 1998to 2004(Ismail et al, 2009). Houde et al conducted a detailed study on biomagnification which provided concentrations and group patterns of sPCAs and mPCAs in Lake Ontario and Lake Michigan food webs; however, information was limited to the Great Lakes region.…”

Toxaphene trends in the Great Lakes fish

“…The concentrations of these congeners are consistent with the concentrations of total toxaphene and show decreasing trends with no obvious site-to-site differences except for Lake Superior. Parlars 26, 50, and 62 appeared to be the dominant congeners in the Great Lakes fish samples, consistent with what has been reported in the literature (Whittle et al, 2000a,b;Muir et al, 2004;Chan and Yeboah, 2000;Gouteux et al, 2002). These three congeners account for 1.4-41.7% of the total depending on the fish species.…”

“…Whittle et al (2000a) reported Parlars 26, 50 and 62 were 10.0% of the total toxaphene in LS lake trout. Muir et al (2004) found they made up 12.7% of the toxaphene in lake trout, 8.2% in herring, 8.3% in smelt and 11.0% in sculpin in Lake Superior. Chan and Yeboah (2000) found the sum of these three congeners represented 8% to 25% of total toxaphene in fish samples collected from the Yukon, Canada.…”

Canada's national aquatic biological specimen bank and database

“…Collaborations, such as described above, have contributed to more than 60 scientific publications, reports, and/or book chapters. Topics include but are not restricted to: biomagnification of contaminants in food webs (e.g., Helm et al, 2005;Muir et al, 2004;Tomy et al, 2004), ecosystem status and assessment (e.g., Neilson et al, 2003), spatial and temporal distribution of contaminants in ecosystems (e.g., Luross et al, 2002;MacEachen et al, 2000;Whittle et al, 2000), and impacts of aquatic invasive species on contaminant transfer through food webs (e.g., Morrison et al, 1998Morrison et al, , 2000Kiriluk et al, 1999).…”