Article

Bulletin of Environmental Contamination and Toxicology

, Volume 90, Issue 3, pp 269-273

Organochlorine Contaminants in Blubber from Stranded Marine Mammals Collected from the Northern Oregon and Southern Washington Coasts: Implications for Re-introducing California Condors, Gymnogyps californianus, in Oregon

  • Deke T. GundersenAffiliated withEnvironmental Science Program, Pacific University Email author 
  • , Deborah A. DuffieldAffiliated withDepartment of Biology, Portland State University
  • , Tina RandallAffiliated withEnvironmental Science Program, Pacific University
  • , Nate WintleAffiliated withDepartment of Biology, Portland State University
  • , Dalin N. D’AlessandroAffiliated withDepartment of Biology, Portland State University
  • , James M. RiceAffiliated withMarine Mammal Institute, Oregon State University
  • , David ShepherdsonAffiliated withConservation Division, The Oregon Zoo

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Abstract

Re-introduction of California Condors into Oregon is currently being considered, but there are concerns about the safety of potential food sources of this species. Condors are opportunistic feeders and a largely available food source for this species will be stranded marine mammal carcasses. We analyzed 37 blubber samples from 7 different marine mammal species collected from the Oregon and Southern Washington coasts for 18 organochlorine (OC) pesticides and 16 polychlorinated biphenyls (PCBs). Dichlorodiphenyldichloroethylene (DDE) was the most prevalent OC contaminant, making up more than 58 % of the total OC concentration measured. There were no significant differences in OC content between species or sexes.

Keywords

Marine mammals DDE PCBs