Organohalogen and organotin compounds in killer whales mass-stranded in the Shiretoko Peninsula, Hokkaido, Japan

Persistent organic pollutants (POPs) in killer whales (Orcinus orca) from the Crozet Archipelago, southern Indian Ocean

“…PCDD/F concentrations in our study were higher than those reported for killer whales from Japan (Kajiwara et al, 2006), but lower than levels reported for the three different communities of killer whales living in the Northeastern Pacific Ocean (Ross et al, 2000). The higher PCDD/F concentrations observed in the latter killer whales may reflect local contamination by pulp and paper mills .…”

“…1,2,3,6,7,8 HxCDD accounted on average for 65 ± 15% of P HxCDD. This particular congener was previously reported as being dominant in several species of marine mammals including killer whales from Japan (Kajiwara et al, 2006), Weddell seals from Antarctica (Senthilkumar et al, 2002), harbour seals (Phoca vitulina) from British Columbia (Addison et al, 2005). This congener has, in part, been attributed to the historical use of elemental chlorine by pulp mills, and to woodchips contaminated by pentachlorophenol (Addison et al, 2005).…”

“…As long lived, high level trophic feeders, marine mammals tend to bioaccumulate POPs in lipid tissues. Marine mammals from Europe, North America, Asia, and the Arctic have been found to be particularly contaminated with PCBs (Bergman et al, 2001;Kajiwara et al, 2006;Muir et al, 2000;Ross et al, 2000). Marine mammal-eating transient killer whales (Orcinus orca) from the Northeastern Pacific Ocean are reported as among the most PCBcontaminated marine mammals in the world (Ross et al, 2000) and killer whales from Norway are the most PCB-contaminated animals in the Arctic (Wolkers et al, 2007).…”

Non-specific reactive hepatitis in dolphins stranded in the Canary Islands

“…The analytical method and chromatographic procedures were described in other reports (Carballo et al 2008). The PCB and DDT concentrations were compared with the toxicological threshold concentrations suggested for marine mammals (Jepson et al 2005;Kajiwara et al 2006;Castrillon et al 2010). …”

Accumulation of butyltin compounds in finless porpoises (Neophocaena asiaeorientalis) from Korean coast: Tracking the effectiveness of TBT regulation over time

“…To date, several studies have reported the accumulation of BTs and discussed the ecotoxicological implications of this accumulation in whales (Kannan et al, 1997;Kajiwara et al, 2006;Harino et al, 2007Harino et al, , 2008Choi et al, 2011b), dolphins (Kim et al, 1996;Kannan et al, 1997;Tanabe et al, 1998;Choi et al, 2011b), and porpoises (Berge et al, 2004;Ciesielski et al, 2004;Strand et al, 2005;Nakayama et al, 2009). However, little is known about temporal trends of BTs in cetaceans (Strand et al, 2005;Nakayama et al, 2009).…”