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Mussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web

Despite international regulation, polychlorinated biphenyls (PCBs) are routinely detected at levels threatening human and environmental health. While previous research has emphasized trophic transfer as the principle pathway for PCB accumulation, our study reveals the critical role that non-trophic...

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Autores principales: Prince, Kimberly D., Crotty, Sinead M., Cetta, Alexa, Delfino, Joseph J., Palmer, Todd M., Denslow, Nancy D., Angelini, Christine
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8080837/
https://www.ncbi.nlm.nih.gov/pubmed/33911140
http://dx.doi.org/10.1038/s41598-021-88684-9
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author Prince, Kimberly D.
Crotty, Sinead M.
Cetta, Alexa
Delfino, Joseph J.
Palmer, Todd M.
Denslow, Nancy D.
Angelini, Christine
author_facet Prince, Kimberly D.
Crotty, Sinead M.
Cetta, Alexa
Delfino, Joseph J.
Palmer, Todd M.
Denslow, Nancy D.
Angelini, Christine
author_sort Prince, Kimberly D.
collection PubMed
description Despite international regulation, polychlorinated biphenyls (PCBs) are routinely detected at levels threatening human and environmental health. While previous research has emphasized trophic transfer as the principle pathway for PCB accumulation, our study reveals the critical role that non-trophic interactions can play in controlling PCB bioavailability and biomagnification. In a 5-month field experiment manipulating saltmarsh macro-invertebrates, we show that suspension-feeding mussels increase concentrations of total PCBs and toxic dioxin-like coplanars by 11- and 7.5-fold in sediment and 10.5- and 9-fold in cordgrass-grazing crabs relative to no-mussel controls, but do not affect PCB bioaccumulation in algae-grazing crabs. PCB homolog composition and corroborative dietary analyses demonstrate that mussels, as ecosystem engineers, amplify sediment contamination and PCB exposure for this burrowing marsh crab through non-trophic mechanisms. We conclude that these ecosystem engineering activities and other non-trophic interactions may have cascading effects on trophic biomagnification pathways, and therefore exert strong bottom-up control on PCB biomagnification up this coastal food web.
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spelling pubmed-80808372021-04-30 Mussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web Prince, Kimberly D. Crotty, Sinead M. Cetta, Alexa Delfino, Joseph J. Palmer, Todd M. Denslow, Nancy D. Angelini, Christine Sci Rep Article Despite international regulation, polychlorinated biphenyls (PCBs) are routinely detected at levels threatening human and environmental health. While previous research has emphasized trophic transfer as the principle pathway for PCB accumulation, our study reveals the critical role that non-trophic interactions can play in controlling PCB bioavailability and biomagnification. In a 5-month field experiment manipulating saltmarsh macro-invertebrates, we show that suspension-feeding mussels increase concentrations of total PCBs and toxic dioxin-like coplanars by 11- and 7.5-fold in sediment and 10.5- and 9-fold in cordgrass-grazing crabs relative to no-mussel controls, but do not affect PCB bioaccumulation in algae-grazing crabs. PCB homolog composition and corroborative dietary analyses demonstrate that mussels, as ecosystem engineers, amplify sediment contamination and PCB exposure for this burrowing marsh crab through non-trophic mechanisms. We conclude that these ecosystem engineering activities and other non-trophic interactions may have cascading effects on trophic biomagnification pathways, and therefore exert strong bottom-up control on PCB biomagnification up this coastal food web. Nature Publishing Group UK 2021-04-28 /pmc/articles/PMC8080837/ /pubmed/33911140 http://dx.doi.org/10.1038/s41598-021-88684-9 Text en © The Author(s) 2021 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) .
spellingShingle Article
Prince, Kimberly D.
Crotty, Sinead M.
Cetta, Alexa
Delfino, Joseph J.
Palmer, Todd M.
Denslow, Nancy D.
Angelini, Christine
Mussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web
title Mussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web
title_full Mussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web
title_fullStr Mussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web
title_full_unstemmed Mussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web
title_short Mussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web
title_sort mussels drive polychlorinated biphenyl (pcb) biomagnification in a coastal food web
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC8080837/
https://www.ncbi.nlm.nih.gov/pubmed/33911140
http://dx.doi.org/10.1038/s41598-021-88684-9
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