Persistent organic pollutants in female humpback whales Megaptera novaeangliae from the Gulf of Maine

Baugh, Keri A.; Robbins, Jooke; Schultz, Irvin R.; Ylitalo, Gina M.

doi:10.1016/j.envpol.2022.120616

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Persistent organic pollutants in female humpback whales Megaptera novaeangliae from the Gulf of Maine

2023
By Baugh, Keri A. ; Robbins, Jooke ; Schultz, Irvin R. ; ...
Source: Environmental Pollution, 316, 120616

[PDF-298.19 KB]

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Journal Title:

Environmental Pollution
Personal Author:

Baugh, Keri A. ; Robbins, Jooke ; Schultz, Irvin R. ; Ylitalo, Gina M.

Baugh, Keri A. ; Robbins, Jooke ; Schultz, Irvin R. ; Ylitalo, Gina M. Less -
NOAA Program & Office:

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center)

NMFS (National Marine Fisheries Service) ; NWFSC (Northwest Fisheries Science Center) Less -
Description:

Contaminant studies in cetaceans typically focus on males due to confounding effects of reproductive status in females and maternal offloading. However, an improved understanding of contaminant burdens in female cetaceans is needed to better assess potential impacts to populations. In this study, 36 blubber biopsy samples of female humpback whales (Megaptera novaeangliae) from the Gulf of Maine were analyzed to examine contaminant loads across females of different ages. Sampled individuals were individually-identified from longitudinal studies and assigned to age class (i.e., adult, subadult, juvenile, calf). Analysis was performed using gas chromatography/mass spectrometry for persistent organic pollutants (POPs) including polychlorinated biphenyls (PCBs), dichlorodiphenyltrichloroethanes (DDTs), chlordanes (CHLDs), polybrominated diphenyl ethers (PBDEs), hexachlorocyclohexanes (HCHs), and other organochlorine pesticides (OCPs). The most abundant POPs measured were PCB congeners, with summed values ranging from 380 to 12,300 ng/g, lipid weight, well below the threshold value for adverse health effects. We found significant differences in mean values between adults and juveniles and between adults and subadults, with the exception of the less persistent HCHs for the latter. We also found significant differences in mean levels of ΣHCHs and Σother OCPs between the juveniles and subadults. Changes over age are consistent with maternal offloading and potentially important for evaluating population health and viability.
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General Medicine Health, Toxicology And Mutagenesis Pollution Toxicology
Source:

Environmental Pollution, 316, 120616
DOI:

https://doi.org/10.1016/j.envpol.2022.120616
ISSN:

0269-7491
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PDF
Publisher:

Elsevier BV
Document Type:

Journal Article
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Accepted Manuscript
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Submitted
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urn:sha256:475975db125d125d6d8220fc1c06ee22b1083df640c7f11ffa563bd490a19579
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https://repository.library.noaa.gov/view/noaa/49593/noaa_49593_DS1.pdf
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Persistent organic pollutants in female humpback whales Megaptera novaeangliae from the Gulf of Maine

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