Accumulation and distribution of organochlorines (PCBs and DDTs) in various organs of Stenella coeruleoalba and a Tursiops truncatus from Mediterranean littoral environment (France)

Tissue-Related Polychlorinated Biphenyls Accumulation in Mediterranean Cetaceans: Assessment of Toxicological Status

“…Concentrations of PCBs in liver (9.57-120.43 lg g -1 , mean 44.73 lg g -1 ) and in kidney (4.42-108.39 lg g -1 , mean 39.38 lg g -1 ) were comparable (p > 0.05), but significantly higher (p < 0.001) than those observed in muscle tissue (2.47-70.06 lg g -1 , mean 19.86 lg g -1 ) and lung (1.02-95.16 lg g -1 , mean 16.10 lg g -1 ), which presented levels of similar magnitude (p > 0.05). This tissue distribution is comparable to that obtained by the majority of authors on various types of marine mammals (Marsili and Focardi 1997;Wafo et al, 2005), and can be linked to differential lipid composition, blood flow rate and metabolic capacities among various tissues (Jenssen et al, 1996). However, independent of the factors controlling accumulation of these contaminants, the PCB concentrations measured here were higher than those found in other studies (Weisbrod et al, 2001, Karuppiah et al, 2005.…”

“…Other chlorobiphenyls found in moderate amounts included congeners 101, 105 and 118 (14.8-18.7%), while the remaining congeners collectively (PCB 20,28,35,52,60,77,126,156,169 and 209) showed the lowest percentages (16.2-18.3%). Comparable patterns were found in dolphins either from the Mediterranean Sea, i.e., Tursiops truncatus (Storelli and Marcotrigiano, 2000;Wafo et al, 2005), Stenella coeruleoalba (Kannan et al, 1993;Wafo et al, 2005) and Grampus griseus (Storelli and Marcotrigiano, 2000a), or from other seas, i.e., Lagenorhynchus acutus (Weisbrod et al, 2001) and Stenella frontalis (Watanabe et al, 2000). Many studies have shown that marine mammals have the capacity to concentrate organochlorinated compounds, but have a weak potential to decompose them, especially with regard to the strongly chlorinated congeners (Tanabe, 2002).…”

Preliminary hazard assessment of polychlorinated biphenyls, polybrominated diphenyl ethers, and polychlorinated dibenzo‐p‐dioxins and dibenzofurans to yangtze finless porpoise in dongting lake, china

“…Polychlorinated biphenyls (PCBs), polybrominated diphenyl ethers (PBDEs), and polychlorinated dibenzo‐ p ‐dioxins and dibenzofurans (PCDD/Fs) have been reported to accumulate in cetaceans [10–15]. To our knowledge, however, no studies have investigated these persistent organic pollutants and their hazards to the Yangtze finless porpoise because of the limited availability of samples.…”

Determination of 7-ethoxyresorufin-o-deethylase (EROD) induction in leaping mullet (Liza saliens) from the highly contaminated Aliaga Bay, Turkey

“…The relationship between EROD induction and exposure to chemicals has been investigated in over 150 different fish species throughout the world (Gooch et al 1989;Narbonne et al 1991;Gunther et al 1997;Fent and Batscher 2000;Kucklick et al 2002;Aarab et al 2004;Wafo et al 2005;Ferreira et al 2006). All these studies confirm that, as a biomonitoring tool, measurement of EROD activity in fish gives information about exposure to certain planar halogenated and PAHs and other structurally similar compounds.…”