| levels of toxaphene congeners in white whales (delphinapterus leucas) from svalbard, norway. | this study reports concentrations of three pesticide toxaphene congeners (chbs; chb-26, -50 and -62) from the blubber of ten adult, male white whales (delphinapterus leucas) from svalbard, norway. the chb congeners that occurred at the highest levels in the blubber of the white whales were, as expected, chb-26 (4636+/-1992 (sd) ng/g l.w.) and chb-50 (6579+/-2214 ng/g l.w.); chb-62 (232+/-231 ng/g l.w.) was also present, but at much lower concentrations. the mean level of the sum of the three chb ... | 2006 | 15975634 |
| disruptive effects of persistent organohalogen contaminants on thyroid function in white whales (delphinapterus leucas) from svalbard. | we analysed levels of 56 organohalogen contaminants (ohcs) including brominated flame retardants, polychlorinated biphenyls (pcbs), and organochlorine pesticides in the blubber of white (beluga) whales (delphinapterus leucas) from svalbard, norway (n=12; 6 adults [5 males and 1 female] and 6 subadults [4 males and 2 females]) collected in 1996-2001. we also measured circulating levels of thyroid hormones (ths) and thyroid stimulating hormone (tsh) in the whales. the results confirm that ohc leve ... | 2011 | 21497377 |
| circulating thyroid hormones and associated metabolites in white whales (delphinapterus leucas) determined using isotope-dilution mass spectrometry. | blood was sampled from nine free-ranging white whales (beluga whale, delphinapterus leucas) from svalbard, norway during the summers of 2013 and 2014. total concentrations of eleven thyroid hormones and metabolites were measured in serum using a novel liquid chromatography tandem mass spectrometry analytical method. measurements of these compounds in plasma gave the same results as in serum. the three hormones found in highest concentrations were 3,3',5-triiodothyronine (t3), 3,3',5'-triiodothyr ... | 2017 | 28342348 |
| accumulation, metabolism, and food-chain transfer of chlorinated and brominated contaminants in subadult white whales (delphinapterus leucas) and narwhals (monodon monoceros) from svalbard, norway. | the concentrations and patterns of polychlorinated biphenyls (pcbs), chlorinated pesticides, and polybrominated diphenyl ethers (pbdes) were studied in white whales (delphinapterus leucas) and narwhals (monodon monoceros) from svalbard, norway. in addition, their main food items were included in the study. in the whales, a broad range of pollutants was found in relatively high concentrations. pcbs and pesticides were approximately 3000 and 8000 ng/g lipid, respectively, for white whales and thre ... | 2006 | 16237494 |