Equatorial Atlantic pelagic predators reveal low content of PBDEs in contrast to MeO-BDEs: An analysis of brominated diphenyl ethers in blue shark and yellowfin tuna

Menezes-Sousa, Dhoone; Alonso, Mariana B.; Pizzochero, A. C.; Viana, Danielle; Roque, Pollyana; Hazin, Fábio Hissa Vieira; Torres, João Paulo Machado

doi:10.1016/j.scitotenv.2021.147820

Cited by 8 publications

(1 citation statement)

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“…However, in this study, more highly brominated PBDEs, such as BDE 153 and 154, did not show clear decreasing trends across populations. Moreover, several studies have revealed the considerable contribution of MeO-PBDEs to organobromine loads in marine wildlife compared to PBDEs, , while our results further highlight the significantly increasing levels of two MeO-PBDEs in Swedish eagles. Considering also the toxicities induced by exposure to 6-MeO-BDE 47 in endocrine, developmental, and neurobehavioral aspects, , further research would be beneficial in elucidating the sources, bioaccumulation, and impacts of these compounds in these and other areas.…”

Section: Results and Discussionmentioning

confidence: 99%

Spatiotemporal Trends of Anthropogenic and Naturally Occurring Polybrominated Diphenyl Ethers in Long-Term White-Tailed Eagle Feather Collections

Sun,

Covaci,

Bustnes

et al. 2024

Environ. Sci. Technol. Lett.

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Using archived feathers from Norwegian, Swedish, and Greenlandic white-tailed eagles (Haliaeetus albicilla), we investigated long-term (1866−2015) spatiotemporal trends of polybrominated diphenyl ethers (PBDEs) and their methoxylated analogues (MeO-PBDEs). Concentrations of BDE 47 (constituting 47−65% of ∑PBDEs) were significantly increased in feathers from Sweden, while those of other congeners remained at similar levels between Sweden and Norway. Among the naturally occurring MeO-PBDEs, 6-MeO-BDE 47 exhibited higher levels in Sweden while 2′-MeO-BDE 68 concentrations were similar across regions. Concentrations of BDE 47 and 6-MeO-BDE 47 were not intercorrelated in Swedish eagles, highlighting the significance of anthropogenic input and natural origin, respectively, possibly associated with enhanced primary production in the Baltic region. Such a natural origin was further supported by the presence of MeO-PBDEs in 35 historical feathers originally collected from 1866 to 1957. Furthermore, in eagles from Norway and Sweden, less brominated PBDEs exhibited significantly increasing trends until the 1990s that declined considerably thereafter, whereas no apparent decrease was observed for BDE 153 or 154. By comparison, all PBDE congeners showed nonlinear but insignificant changes in Greenland. Additionally, the Swedish eagles showed significantly increased levels of ∑MeO-PBDEs, primarily driven by 6-MeO-BDE 47. Our findings indicate that further evaluation of the sources and impacts of more highly brominated PBDEs and MeO-PBDEs is warranted.

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