Levels of organochlorine chemicals in tissues of beluga whales (Delphinapterus leucas) from the St. Lawrence Estuary, Qu�bec, Canada

These findings suggest that organochlorine chemicals contamination is a major factor in the non-recovery of the St

D. Martineau; P. B�land; C. Desjardins; A. Lagac�

2005

Scholarcy highlights

  • High levels of organochlorine chemicals were found in the blubber of 26 stranded carcasses of beluga whales from an isolated population in the St
  • These compounds accumulated with age in both sexes, being consistently more concentrated in male tissue; high and variable concentrations were found in four juveniles
  • Lower levels in females are best explained through massive transfer to the newborn during lactation, resulting in juvenile OC concentrations equal to or higher than in adult males
  • Concentrations in the liver and kidney expressed on a lipid basis suggest dynamic OC exchange between tissues
  • The adipose tissue concentrations reported here were higher or equal to those found In some pinnipeds, in laboratory animals, and in domestic animals with severe reproductive failure
  • These findings suggest that OC contamination is a major factor in the non-recovery of the St
  • Internat Counc Explor Sea, Copenhagen, CM 1981/ N:10, 10 pp

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