Influence of Life-History Parameters on Persistent Organic Pollutant Concentrations in Blubber of Eastern North Pacific Gray Whales (Eschrichtius robustus)

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dc.creatorHayes, Kia R.R (TTU)
dc.creatorYlitalo, Gina M
dc.creatorAnderson, Todd A (TTU)
dc.creatorUrbán, Jorge R
dc.creatorJacobsen, Jeff K
dc.creatorScordino, Jonathan J
dc.creatorLang, Aimee R
dc.creatorBaugh, Keri A
dc.creatorBolton, Jennie L
dc.creatorBrüniche-Olsen, Anna
dc.creatorCalambokidis, John
dc.creatorMartínez-Aguilar, Sergio
dc.creatorSubbiah, Seenivasan (TTU)
dc.creatorGribble, Matthew O
dc.creatorGodard-Codding, Céline A. J (TTU)
dc.date.accessioned2023-03-09T19:18:36Z
dc.date.available2023-03-09T19:18:36Z
dc.date.issued2022
dc.description© 2022 The Authors. Published by American Chemical Society RIGHTS & PERMISSIONS ACS AuthorChoice CC: Creative CommonsBY: Credit must be given to the creatorNC: Only noncommercial uses of the work are permittedND: No derivatives or adaptations of the work are permitteden_US
dc.description.abstractExposure to persistent organic pollutants (POPs) can significantly impact marine mammal health, reproduction, and fitness. This study addresses a significant 20-year gap in gray whale contaminant monitoring through analysis of POPs in 120 blubber biopsies. The scope of this substantial sample set is noteworthy in its range and diversity with collection between 2003 and 2017 along North America’s west coast and across diverse sex, age, and reproductive parameters, including paired mothers and calves. Mean blubber concentrations of polychlorinated biphenyls (∑PCBs), dichlorodiphenyltrichloroethanes (∑DDTs), and chlordanes (∑CHLs) generally decreased since previous reports (1968–1999). This is the first report of polybrominated diphenyl ethers (PBDEs) and select hexachlorocyclohexanes (HCHs) in this species. Statistical modeling of the 19 most frequently detected compounds in this dataset revealed sex-, age-, and reproductive status-related patterns, predominantly attributed to maternal offloading. Mean POP concentrations differed significantly by sex in adults (17 compounds, up to 3-fold higher in males) but not in immatures (all 19 compounds). Mean POP concentrations were significantly greater in adults versus immatures in both males (17 compounds, up to 12-fold) and females (13 compounds, up to 3-fold). POP concentrations were detected with compound-specific patterns in nursing calves, confirming maternal offloading for the first time in this species.en_US
dc.identifier.citationKia R. R. Hayes, Gina M. Ylitalo, Todd A. Anderson, Jorge Urbán R., Jeff K. Jacobsen, Jonathan J. Scordino, Aimee R. Lang, Keri A. Baugh, Jennie L. Bolton, Anna Brüniche-Olsen, John Calambokidis, Sergio Martínez-Aguilar, Seenivasan Subbiah, Matthew O. Gribble, and Céline A. J. Godard-Codding Environmental Science & Technology 2022 56 (23), 17119-17130 DOI: 10.1021/acs.est.2c05998en_US
dc.identifier.urihttps://doi.org/10.1021/acs.est.2c05998
dc.identifier.urihttps://hdl.handle.net/2346/91212
dc.language.isoengen_US
dc.subjectorganochlorinesen_US
dc.subjectpollutantsen_US
dc.subjectgray whaleen_US
dc.subjectlife-historyen_US
dc.subjectmarine mammalsen_US
dc.titleInfluence of Life-History Parameters on Persistent Organic Pollutant Concentrations in Blubber of Eastern North Pacific Gray Whales (Eschrichtius robustus)en_US
dc.typeArticleen_US

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