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

Abstract 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...

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Autores principales:	Kimberly D. Prince, Sinead M. Crotty, Alexa Cetta, Joseph J. Delfino, Todd M. Palmer, Nancy D. Denslow, Christine Angelini
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/394abc28c3df4925a3bb87667520a0fc
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spelling	oai:doaj.org-article:394abc28c3df4925a3bb87667520a0fc2021-12-02T17:15:33ZMussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web10.1038/s41598-021-88684-92045-2322https://doaj.org/article/394abc28c3df4925a3bb87667520a0fc2021-04-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-88684-9https://doaj.org/toc/2045-2322Abstract 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.Kimberly D. PrinceSinead M. CrottyAlexa CettaJoseph J. DelfinoTodd M. PalmerNancy D. DenslowChristine AngeliniNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-11 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Kimberly D. Prince Sinead M. Crotty Alexa Cetta Joseph J. Delfino Todd M. Palmer Nancy D. Denslow Christine Angelini Mussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web
description	Abstract 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.
format	article
author	Kimberly D. Prince Sinead M. Crotty Alexa Cetta Joseph J. Delfino Todd M. Palmer Nancy D. Denslow Christine Angelini
author_facet	Kimberly D. Prince Sinead M. Crotty Alexa Cetta Joseph J. Delfino Todd M. Palmer Nancy D. Denslow Christine Angelini
author_sort	Kimberly D. Prince
title	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_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_sort	mussels drive polychlorinated biphenyl (pcb) biomagnification in a coastal food web
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/394abc28c3df4925a3bb87667520a0fc
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Mussels drive polychlorinated biphenyl (PCB) biomagnification in a coastal food web

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