A feeding inhibition based prediction of the toxic effect of dissolved metal mixtures upon Echinogammarus marinus (Crustacea: Amphipoda) at field relevant concentrations across a latitudinal gradient
Risk assessment of metals in the environment is performed mainly with toxicity evaluations on single metals, which is largely inadequate since these substances occur in mixtures. The development of models predicting combined toxic effects on the basis of the concentration–response relationships of i...
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Language: | English |
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Royal Society of Chemistry
2011
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Online Access: | http://hdl.handle.net/10773/13216 https://doi.org/10.1039/c1em10499c |
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ftria:oai:ria.ua.pt:10773/13216 2023-05-15T16:50:47+02:00 A feeding inhibition based prediction of the toxic effect of dissolved metal mixtures upon Echinogammarus marinus (Crustacea: Amphipoda) at field relevant concentrations across a latitudinal gradient Pastorinho, M. R. Telfer, T. C. Soares, A. Nogueira, A. J. A. 2011-12 http://hdl.handle.net/10773/13216 https://doi.org/10.1039/c1em10499c eng eng Royal Society of Chemistry FCT - SFRH/BPD/26689/2006 1464-0325 http://hdl.handle.net/10773/13216 doi:10.1039/c1em10499c openAccess article 2011 ftria https://doi.org/10.1039/c1em10499c 2022-05-25T18:33:44Z Risk assessment of metals in the environment is performed mainly with toxicity evaluations on single metals, which is largely inadequate since these substances occur in mixtures. The development of models predicting combined toxic effects on the basis of the concentration–response relationships of individual compounds has emerged as an answer. In the present study, metal effects on post-exposure anorexia (the concept of FdC50—concentration causing 50% of feeding inhibition—is implemented) in Echinogammarus marinus, a widely distributed gammarid amphipod, were assessed and compared with modelled ones obtained through the application of the concentration addition (CA) model, which represents a reasonable worst-case scenario for the risk assessment of metal mixtures. Data were validated using in situ experiments performed along a latitudinal gradient (Iceland, Scotland and Portugal) aiming at establishing a geographic profile of autochthonous population susceptibilities to metals. For all of the metals studied concentrations in the water column at exposure sites were in good agreement with feeding inhibition levels. Models gave low to relatively high percentage agreement between predictions and experimental data. Boreal populations demonstrated higher susceptibility to single metals, but not to mixture exposures. Meridional populations denoted lower susceptibilities with higher FdC50. Article in Journal/Newspaper Iceland Repositório Institucional da Universidade de Aveiro (RIA) Journal of Environmental Monitoring 13 12 3343 |
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Open Polar |
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Repositório Institucional da Universidade de Aveiro (RIA) |
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language |
English |
description |
Risk assessment of metals in the environment is performed mainly with toxicity evaluations on single metals, which is largely inadequate since these substances occur in mixtures. The development of models predicting combined toxic effects on the basis of the concentration–response relationships of individual compounds has emerged as an answer. In the present study, metal effects on post-exposure anorexia (the concept of FdC50—concentration causing 50% of feeding inhibition—is implemented) in Echinogammarus marinus, a widely distributed gammarid amphipod, were assessed and compared with modelled ones obtained through the application of the concentration addition (CA) model, which represents a reasonable worst-case scenario for the risk assessment of metal mixtures. Data were validated using in situ experiments performed along a latitudinal gradient (Iceland, Scotland and Portugal) aiming at establishing a geographic profile of autochthonous population susceptibilities to metals. For all of the metals studied concentrations in the water column at exposure sites were in good agreement with feeding inhibition levels. Models gave low to relatively high percentage agreement between predictions and experimental data. Boreal populations demonstrated higher susceptibility to single metals, but not to mixture exposures. Meridional populations denoted lower susceptibilities with higher FdC50. |
format |
Article in Journal/Newspaper |
author |
Pastorinho, M. R. Telfer, T. C. Soares, A. Nogueira, A. J. A. |
spellingShingle |
Pastorinho, M. R. Telfer, T. C. Soares, A. Nogueira, A. J. A. A feeding inhibition based prediction of the toxic effect of dissolved metal mixtures upon Echinogammarus marinus (Crustacea: Amphipoda) at field relevant concentrations across a latitudinal gradient |
author_facet |
Pastorinho, M. R. Telfer, T. C. Soares, A. Nogueira, A. J. A. |
author_sort |
Pastorinho, M. R. |
title |
A feeding inhibition based prediction of the toxic effect of dissolved metal mixtures upon Echinogammarus marinus (Crustacea: Amphipoda) at field relevant concentrations across a latitudinal gradient |
title_short |
A feeding inhibition based prediction of the toxic effect of dissolved metal mixtures upon Echinogammarus marinus (Crustacea: Amphipoda) at field relevant concentrations across a latitudinal gradient |
title_full |
A feeding inhibition based prediction of the toxic effect of dissolved metal mixtures upon Echinogammarus marinus (Crustacea: Amphipoda) at field relevant concentrations across a latitudinal gradient |
title_fullStr |
A feeding inhibition based prediction of the toxic effect of dissolved metal mixtures upon Echinogammarus marinus (Crustacea: Amphipoda) at field relevant concentrations across a latitudinal gradient |
title_full_unstemmed |
A feeding inhibition based prediction of the toxic effect of dissolved metal mixtures upon Echinogammarus marinus (Crustacea: Amphipoda) at field relevant concentrations across a latitudinal gradient |
title_sort |
feeding inhibition based prediction of the toxic effect of dissolved metal mixtures upon echinogammarus marinus (crustacea: amphipoda) at field relevant concentrations across a latitudinal gradient |
publisher |
Royal Society of Chemistry |
publishDate |
2011 |
url |
http://hdl.handle.net/10773/13216 https://doi.org/10.1039/c1em10499c |
genre |
Iceland |
genre_facet |
Iceland |
op_relation |
FCT - SFRH/BPD/26689/2006 1464-0325 http://hdl.handle.net/10773/13216 doi:10.1039/c1em10499c |
op_rights |
openAccess |
op_doi |
https://doi.org/10.1039/c1em10499c |
container_title |
Journal of Environmental Monitoring |
container_volume |
13 |
container_issue |
12 |
container_start_page |
3343 |
_version_ |
1766040905058353152 |