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Mercury bioaccumulation and speciation in coastal invertebrates: Implications for trophic magnification in a marine food web.
Bradford, Molly A; Mallory, Mark L; O'Driscoll, Nelson J.
Afiliação
  • Bradford MA; Earth and Environmental Science Department, Acadia University, Wolfville, Nova Scotia, Canada. Electronic address: mollybradford@acadiau.ca.
  • Mallory ML; Biology Department, Acadia University, Wolfville, Nova Scotia, Canada.
  • O'Driscoll NJ; Earth and Environmental Science Department, Acadia University, Wolfville, Nova Scotia, Canada.
Mar Pollut Bull ; 188: 114647, 2023 Mar.
Article em En | MEDLINE | ID: mdl-36736254
Studies on mercury bioaccumulation and biomagnification in coastal invertebrates in eastern Canada are limited, but these data are necessary to determine risk of mercury exposure effects in upper trophic level organisms. We quantified methylmercury (MeHg), total mercury (THg), and stable isotopes of δ13C and δ15N in 14 species of invertebrates in the Minas Basin. The overall mean concentration of MeHg (12.78 ± 11.23 ng/g dw) was approximately 10 times below the Canadian guideline for the protection of wildlife consumers like fish and birds of 157.20 ng/g dry weight (dw). Invertebrates at higher trophic positions (δ15N) had greater THg and particularly MeHg. The Trophic Magnification Factors (TMF) for MeHg and THg (1.59 and 1.21 respectively) were similar to others reported in studies of food webs containing higher trophic level organisms.
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Texto completo: 1 Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Mercúrio / Compostos de Metilmercúrio Limite: Animals País/Região como assunto: America do norte Idioma: En Revista: Mar Pollut Bull Ano de publicação: 2023 Tipo de documento: Article

Texto completo: 1 Base de dados: MEDLINE Assunto principal: Poluentes Químicos da Água / Mercúrio / Compostos de Metilmercúrio Limite: Animals País/Região como assunto: America do norte Idioma: En Revista: Mar Pollut Bull Ano de publicação: 2023 Tipo de documento: Article