Factors controlling the bioaccumulation of mercury and methylmercury by the estuarine amphipod Leptocheirus plumulosus

Lawrence, Angie L.; Mason, Robert P.

doi:10.1016/s0269-7491(00)00072-5

Cited by 115 publications

(99 citation statements)

References 36 publications

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“…We call this second mechanism ''detrital dilution,'' since it is likely that most of the particulate material in the deep brine layer is not living. Similarly, Lawrence and Mason (2001) attributed the relatively low MeHg uptake by an estuarine amphipod to the presence of high amount of detrital organic material in surficial estuarine sediments.…”

Section: Depth or Treatmentmentioning

confidence: 96%

The Great Salt Lake's monimolimnion and its importance for mercury bioaccumulation in brine shrimp (Artemia franciscana)

Jones

Wurtsbaugh

2014

Limnology & Oceanography

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The Great Salt Lake (Utah) is divided by a railroad causeway that causes the lake's south arm to be chemically stratified, when saltier, denser water from the north underflows into the south, creating an anoxic, sulfide-rich deep brine layer that accumulates high levels of total mercury (Hg; 59 ng L 21 ) and methylmercury (33 ng L 21 ). Approximately 40% of this water is advected into the upper mixed layer annually. High mercury levels of brine shrimp (Artemia franciscana) in the mixed layer are passed to waterfowl, creating a human health hazard. We hypothesized that high mercury levels in Artemia are due to exposure when mercury is mixed into the upper layer or when they feed on mercury-rich organic matter in the chemocline separating the two layers. Surprisingly, in aquaria growth experiments with 0%, 10%, or 25% deep brine water, Artemia exposed to progressively higher concentrations of mercury had significantly less mercury. In column experiments simulating a lake with a deep brine layer, Artemia grazed in the chemocline, but they also had lower mercury concentrations than Artemia in controls without a deep brine layer. This was due to detrital dilution of the mercury because the deep brine layer has very high particulate organic carbon (POC; 11.0 mg C L 21 ), which reduced the Hg : POC ratio of food 7-fold compared to that in the overlying mixed layer. Consequently, although Artemia are exposed to the high concentrations of methylmercury generated in the deep layer, the detrimental effect is partially ameliorated by detrital dilution of the mercury.

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Section: Depth or Treatmentmentioning

confidence: 96%

The Great Salt Lake's monimolimnion and its importance for mercury bioaccumulation in brine shrimp (Artemia franciscana)

Jones

Wurtsbaugh

2014

Limnology & Oceanography

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“…For humans, consumption of fish and shellfish is the primary route of exposure. Once introduced into marine systems, in fish and shellfish it bioaccumulates, often at concentrations 1-10 million times higher than in ambient water (US EPA 2015; Lawrence and Mason 2001). In humans methyl mercury is a strong neurotoxin with severe health implications such as kidney and brain damage.…”

Section: Polychlorinated Biphenyls (Pcbs)mentioning

confidence: 99%

Global Gender and Environment Outlook 2016

Seager¹,

Bechtel²,

Bock³

et al. 2016

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DisclaimersThe designations employed and the presentation of material in this publication do not imply the expression of any opinion whatsoever on the part of UN Environment concerning the legal status of any country, territory or city or its authorities, or concerning the delimitation of its frontiers or boundaries. For general guidance on matters relating to the use of maps in publications please go to http://www.un.org/ Depts/Cartographic/english/htmain.htm Mention of a commercial company or product in this publication does not imply endorsement by the UN Environment. ReproductionThis publication may be reproduced in whole or in part and in any form for educational or non-profit services without special permission from the copyright holder, provided acknowledgement of the source is made. UN Environment would appreciate receiving a copy of any publication that uses this publication as a source.No use of this publication may be made for resale or any other commercial purpose whatsoever without prior permission in writing from the UN Environment. Applications for such permission, with a statement of the purpose and extent of the reproduction, should be addressed to the Director, DCPI, UNEP, P.O. Box 30552, Nairobi, 00100, Kenya.The use of information from this publication concerning proprietary products for publicity or advertising is not permitted. Suggested citation:UNEP 2016. Global Gender and Environment Outlook. UN Environment, Nairobi, Kenya.Credits © Photos, and illustrations as specified. Cover images (from left to right):Front Cover Gawrav Sinha/ Shutterstock.com; Vincent St. Thomas / Shutterstock.com Back CoverPhoto credits from left to right -first row © Franz Dejon, UN Photo/Albert González Farran, Le Bich, Left to right -second row © UN Photo/Martine Perret,Le Bich, World Bank Cover Design: Jenniffer Odallo, UNON Design and Layout: Jinita Shah, Eugene Papa / UNON Publishing Services Section Printing: UNON/Publishing Services Section/Nairobi, ISO 14001:2004-Certified The full assessment is available through UN Environment Live (uneplive.unep.org), UN Environment website (http://www.unep.org/publications) and as an eBook.UNEP promotes environmentally sound practices globally and in its own activities. This report is printed on paper from sustainable forests including recycled bre. The paper is chlorine free and the inks vegetable-based.Our distribution policy aims to reduce UNEP's carbon footprint. GLOBAL GENDER AND ENVIRONMENT OUTLOOK WORLD CENTRE FOR SUSTAINABLE DEVELOPMENT Gender Equality Studies and Training Programme UNU-GEST UNIVERSITY OF ICELAND GLOBAL GENDER AND ENVIRONMENT OUTLOOK iiWelcome to the Global Gender and Environment Outlook (GGEO). In this report the authors and the UN Environment Secretariat look at the links between gender and the environment and their importance for gender-sensitive policy-making and actions.The GGEO was first proposed to UN Environment by the Network of Women Ministers and Leaders for the Environment (NWMLE) at the 2012 United Nations Conference on Sustainab...

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“…Hawker & Connell 1986, Connell 1988, Zhou et al 2000, Guruge & Tanabe 2001, and many heavy metals, are also highly stable in the environment (e.g. Lawrence & Mason 2001, Doyle et al 2003, Peltier et al 2003. Such longevity enhances a contaminant's bioconcentration and bioaccumulation in biota (e.g.…”

Section: Theory and Application Of 'Diffusion Model' In Ecotoxicologymentioning

confidence: 99%

“…Such longevity enhances a contaminant's bioconcentration and bioaccumulation in biota (e.g. Hawker & Connell 1986, Connell 1988, Weis & Weis 1992, Munoz et al 1996, Peters et al 1999, Ruus et al 1999, Dang Duc Nhan et al 2001, Fisk et al 2001, Lawrence & Mason 2001, Senthilkumar et al 2001, Scheifler et al 2002a,b, Weltje et al 2002, Hursthouse et al 2003, Van der Oost et al 2003. Currently, bioconcentration and passage of pollutants through food webs is interpreted as solute-phase diffusional uptake in all trophic-level interactions (e.g.…”

Section: Theory and Application Of 'Diffusion Model' In Ecotoxicologymentioning

confidence: 99%

Protein model for pollutant uptake and elimination by living organisms and its implications for ecotoxicology

Quinnell¹,

Hulsman²,

Davie³

2004

Mar. Ecol. Prog. Ser.

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The conceptual model on which chemical assessment of pollutants is based is flawed. The assumption in ecotoxicology -that pollutants cross the biological membrane only by passive diffusion of their solute phase (diffusion model) and thus, that only water-soluble pollutants are biologically available -is inconsistent with the biologists' understanding of the role and functioning of the biological membrane. The biological membrane both isolates organisms, cells and organelles from their external environments and regulates cross-membrane trafficking of polar and non-polar substances. Trafficking regulation is a function of proteins dissolved within the membrane. An alternative protein model for pollutant uptake and elimination is proposed that provides a credible explanation of how solid-phase pollutants, such as those bound to aquatic sediments and soils, may be readily incorporated by living organisms. Current chemical testing is likely to underestimate the risk posed to organisms by sediment and soil-bound pollutants. New techniques for assessing the bioavailability and impacts of pollutants, based on the protein model, are urgently needed.

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Factors controlling the bioaccumulation of mercury and methylmercury by the estuarine amphipod Leptocheirus plumulosus

Cited by 115 publications

References 36 publications

The Great Salt Lake's monimolimnion and its importance for mercury bioaccumulation in brine shrimp (Artemia franciscana)

The Great Salt Lake's monimolimnion and its importance for mercury bioaccumulation in brine shrimp (Artemia franciscana)

Global Gender and Environment Outlook 2016

Protein model for pollutant uptake and elimination by living organisms and its implications for ecotoxicology

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