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Persistent organic pollutants in two dolphin species with focus on toxaphene and polybrominated diphenyl ethers.

Publication ,  Journal Article
Tuerk, KJS; Kucklick, JR; Becker, PR; Stapleton, HM; Baker, JE
Published in: Environmental science & technology
February 2005

Assessing trends of persistent organic pollutants (POPs) in marine mammals is difficult due to age, gender, and metabolism influences on accumulation. To help elucidate these effects in dolphins, POP concentrations were determined in the Atlantic white-sided dolphin, Lagenorhynchus acutus, a pelagic delphinid inhabiting North Atlantic waters, and in the rough-toothed dolphin, Steno bredanensis, a pelagic delphinid inhabiting tropical and subtropical waters. The specific objectives of this study were to determine baseline POP concentrations in L. acutus and S. bredanensis blubber samples and to examine the effects of age, gender, and metabolism on POP concentrations in dolphin blubber. Focus was aimed at contaminants of emerging concern, specifically, toxaphene and polybrominated diphenyl ethers (PBDEs). Samples collected from L. acutus (n = 47) stranding events in Massachusetts (1993--2000) and S. bredanensis samples (n = 15) were analyzed for PCBs, toxaphene, and other organic pesticides by gas chromatography/mass spectrometry (GC/MS). Age and gender influences were similar between the two species, with adult females having significantly lower POP concentrations as compared to adult males and juveniles. Mean sigma toxaphene concentrations were highest in juvenile L. acutus, 13.0 (6.7) microg/g wet mass (1 SD), and lowest in adult female S. bredanensis, 1.49 (1.4) microg/g wet mass. sigma PBDE (sum of congeners 47, 99, 100, 153, and 154) concentrations were highest in juvenile L. acutus, 2.41 (1.2) microg/g wet mass, and lowest in adult female S. bredanensis, 0.51 (0.6) microg/g wet mass. POP concentrations did not significantly differ between adult males and juveniles, suggesting metabolism of congeners and/or dilution with growth. PBDE concentrations in juvenile white-sided dolphins were not significantly related to collection year, suggesting that there may be a lag period for higher concentrations to be detected in pelagic marine mammals such as L. acutus or that concentrations have already peaked in this species prior to the first collection in 1993.

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Published In

Environmental science & technology

DOI

EISSN

1520-5851

ISSN

0013-936X

Publication Date

February 2005

Volume

39

Issue

3

Start / End Page

692 / 698

Related Subject Headings

  • Toxaphene
  • Tissue Distribution
  • Polybrominated Biphenyls
  • Male
  • Insecticides
  • Female
  • Environmental Sciences
  • Environmental Pollutants
  • Dolphins
  • Animals
 

Citation

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Tuerk, K. J. S., Kucklick, J. R., Becker, P. R., Stapleton, H. M., & Baker, J. E. (2005). Persistent organic pollutants in two dolphin species with focus on toxaphene and polybrominated diphenyl ethers. Environmental Science & Technology, 39(3), 692–698. https://doi.org/10.1021/es0487675
Tuerk, Karen J. S., John R. Kucklick, Paul R. Becker, Heather M. Stapleton, and Joel E. Baker. “Persistent organic pollutants in two dolphin species with focus on toxaphene and polybrominated diphenyl ethers.Environmental Science & Technology 39, no. 3 (February 2005): 692–98. https://doi.org/10.1021/es0487675.
Tuerk KJS, Kucklick JR, Becker PR, Stapleton HM, Baker JE. Persistent organic pollutants in two dolphin species with focus on toxaphene and polybrominated diphenyl ethers. Environmental science & technology. 2005 Feb;39(3):692–8.
Tuerk, Karen J. S., et al. “Persistent organic pollutants in two dolphin species with focus on toxaphene and polybrominated diphenyl ethers.Environmental Science & Technology, vol. 39, no. 3, Feb. 2005, pp. 692–98. Epmc, doi:10.1021/es0487675.
Tuerk KJS, Kucklick JR, Becker PR, Stapleton HM, Baker JE. Persistent organic pollutants in two dolphin species with focus on toxaphene and polybrominated diphenyl ethers. Environmental science & technology. 2005 Feb;39(3):692–698.

Published In

Environmental science & technology

DOI

EISSN

1520-5851

ISSN

0013-936X

Publication Date

February 2005

Volume

39

Issue

3

Start / End Page

692 / 698

Related Subject Headings

  • Toxaphene
  • Tissue Distribution
  • Polybrominated Biphenyls
  • Male
  • Insecticides
  • Female
  • Environmental Sciences
  • Environmental Pollutants
  • Dolphins
  • Animals