Specific accumulation of polychlorinated biphenyls and organochlorine pesticides in Japanese common squid as a bioindicator

Bioaccumulation of PCBs in the cuttlefish Sepia officinalis from seawater, sediment and food pathways

“…However, only few studies have aimed at investigating the concentrations and distribution of PCBs in these mollusks, and most of these studies have only considered whole organisms as a source of contaminant for their predators (Tanabe et al 1984, Kawano et al 1986, Weisbrod et al 2000, 2001. Some studies have employed cephalopods as bioindicators of local or global PCB contamination (Butty & Holdway 1997, Yamada et al 1997, Ueno et al 2003, and other ones have demonstrated cellular or tissue effect of organic pollutants (Mann et al 1988, Cheah et al 1995.…”

“…The digestive gland was selected, since this organ plays a major role in the energetic metabolism of cephalopods (Boucaud-Camou & Boucher-Rodoni 1983) and has been documented to accumulate PCBs to high levels (Yamada et al 1997, Ueno et al 2003.…”

“…Cephalopods are known to accumulate numerous contaminants among which are POPs such as organochlorine pesticides or PCBs (Tanabe et al 1984, Kawano et al 1986, Yamada et al 1997, Weisbrod et al 2000, 2001, Ueno et al 2003. However, very little is known about bioaccumulation capacity depending upon the routes of exposure to these contaminants; such data are needed to further assess the potential impact of organic pollutants on cephalopod populations.…”

Maintenance of filtering molluscs in aquaria for sub-chronic studies

“…Most of such studies utilise the biomonitoring of the organisms in a contaminated natural environment. The organisms and environmental samples are taken to the laboratory and then examined for different aspects, such as the embryo malformation (Klumpp et al, 2002) or quantitative determination of the pollutant agent in the samples collected over a time period (UNEP/FAO/IOC/IAEA, 1992; Glynn et al, 1995;Morrison et al, 1995;Comba et al, 1996;Lauenstein and Cantillo, 1998;Furley and Oliveira Fº, 2000;Boonyatumanond et al, 2002;MetcalfeSmith et al, 2002;Mwevura et al, 2002;Binelli and Provini, 2003;Gardner et al, 2003;Licata et al, 2003;Monirith et al, 2003;Muir et al, 2003;Ueno et al, 2003;Danis et al, 2004;Svensson and Förlin, 2004;Toro et al, 2004, among many others). Artificial environments can be produced with the artificial water and sediments (Egeler et al, 1997).…”

Dioxin Concentrations in the Edible Parts of Japanese Common Squid and Saury

“…In fact, PCDDs and PCDFs have been reported to accumulate in the liver of fish species, such as the common carp (Cyprinus carpio) 5) and burbot (Lota lota) 6) . Additionally, Ueno et al 7) suggested that the liver of the Japanese common squid was a suitable bioindicator for monitoring persistent organic pollutants, including PCBs 7) . These findings have increased public anxiety in Japan regarding dioxin concentrations in the gut tissues of commercially available Japanese common squid and saury products.…”