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Trace element accumulation in lotic dragonfly nymphs: Genus matters

Constituents of coal combustion waste (CCW) expose aquatic organisms to complex mixtures of potentially toxic metals and metalloids. Multi-element trace element analyses were used to distinguish patterns of accumulation among 8 genera of dragonfly nymphs collected from two sites on a CCW contaminate...

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Autores principales: Fletcher, Dean E., Lindell, Angela H., Stillings, Garrett K., Blas, Susan A., McArthur, J. Vaun
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Public Library of Science 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5313161/
https://www.ncbi.nlm.nih.gov/pubmed/28207806
http://dx.doi.org/10.1371/journal.pone.0172016
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author Fletcher, Dean E.
Lindell, Angela H.
Stillings, Garrett K.
Blas, Susan A.
McArthur, J. Vaun
author_facet Fletcher, Dean E.
Lindell, Angela H.
Stillings, Garrett K.
Blas, Susan A.
McArthur, J. Vaun
author_sort Fletcher, Dean E.
collection PubMed
description Constituents of coal combustion waste (CCW) expose aquatic organisms to complex mixtures of potentially toxic metals and metalloids. Multi-element trace element analyses were used to distinguish patterns of accumulation among 8 genera of dragonfly nymphs collected from two sites on a CCW contaminated coastal plain stream. Dragonfly nymphs are exceptional for comparing trace element accumulation in syntopic macroinvertebrates that are all predators within the same order (Odonata) and suborder (Anisoptera), but differ vastly in habitat use and body form. Sixteen trace element (Be, V, Cr, Ni, Cu, Zn, As, Se, Sr, Cd, Sb, Cs, Ba, Hg, Tl, and Pb) were analyzed and trophic position and basal carbon sources assessed with stable isotope analyses (C and N). Trophic positions varied within relatively narrow ranges. Size did not appear to influence trophic position. Trophic position rarely influenced trace element accumulation within genera and did not consistently correlate with accumulation among genera. Patterns between δ(13)C and trace element accumulation were generally driven by differences between sites. An increase in trace element accumulation was associated with a divergence of carbon sources between sites in two genera. Higher trace element concentrations tended to accumulate in nymphs from the upstream site, closer to contaminant sources. Influences of factors such as body form and habitat use appeared more influential on trace element accumulation than phylogeny for several elements (Ni, Ba, Sr, V, Be, Cd, and Cr) as higher concentrations accumulated in sprawler and the climber-sprawler genera, irrespective of family. In contrast, As and Se accumulated variably higher in burrowers, but accumulation in sprawlers differed between sites. Greater variation between genera than within genera suggests genus as an acceptable unit of comparison in dragonfly nymphs. Overall, taxonomic differences in trace element accumulation can be substantial, often exceeding variation between sites. Our results underscore the element and taxa specific nature of trace element accumulation, but we provide evidence of accumulation of some trace elements differing among dragonflies that differ in body form and utilize different sub-habitats within a stream reach.
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spelling pubmed-53131612017-03-03 Trace element accumulation in lotic dragonfly nymphs: Genus matters Fletcher, Dean E. Lindell, Angela H. Stillings, Garrett K. Blas, Susan A. McArthur, J. Vaun PLoS One Research Article Constituents of coal combustion waste (CCW) expose aquatic organisms to complex mixtures of potentially toxic metals and metalloids. Multi-element trace element analyses were used to distinguish patterns of accumulation among 8 genera of dragonfly nymphs collected from two sites on a CCW contaminated coastal plain stream. Dragonfly nymphs are exceptional for comparing trace element accumulation in syntopic macroinvertebrates that are all predators within the same order (Odonata) and suborder (Anisoptera), but differ vastly in habitat use and body form. Sixteen trace element (Be, V, Cr, Ni, Cu, Zn, As, Se, Sr, Cd, Sb, Cs, Ba, Hg, Tl, and Pb) were analyzed and trophic position and basal carbon sources assessed with stable isotope analyses (C and N). Trophic positions varied within relatively narrow ranges. Size did not appear to influence trophic position. Trophic position rarely influenced trace element accumulation within genera and did not consistently correlate with accumulation among genera. Patterns between δ(13)C and trace element accumulation were generally driven by differences between sites. An increase in trace element accumulation was associated with a divergence of carbon sources between sites in two genera. Higher trace element concentrations tended to accumulate in nymphs from the upstream site, closer to contaminant sources. Influences of factors such as body form and habitat use appeared more influential on trace element accumulation than phylogeny for several elements (Ni, Ba, Sr, V, Be, Cd, and Cr) as higher concentrations accumulated in sprawler and the climber-sprawler genera, irrespective of family. In contrast, As and Se accumulated variably higher in burrowers, but accumulation in sprawlers differed between sites. Greater variation between genera than within genera suggests genus as an acceptable unit of comparison in dragonfly nymphs. Overall, taxonomic differences in trace element accumulation can be substantial, often exceeding variation between sites. Our results underscore the element and taxa specific nature of trace element accumulation, but we provide evidence of accumulation of some trace elements differing among dragonflies that differ in body form and utilize different sub-habitats within a stream reach. Public Library of Science 2017-02-16 /pmc/articles/PMC5313161/ /pubmed/28207806 http://dx.doi.org/10.1371/journal.pone.0172016 Text en © 2017 Fletcher et al http://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/) , which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
spellingShingle Research Article
Fletcher, Dean E.
Lindell, Angela H.
Stillings, Garrett K.
Blas, Susan A.
McArthur, J. Vaun
Trace element accumulation in lotic dragonfly nymphs: Genus matters
title Trace element accumulation in lotic dragonfly nymphs: Genus matters
title_full Trace element accumulation in lotic dragonfly nymphs: Genus matters
title_fullStr Trace element accumulation in lotic dragonfly nymphs: Genus matters
title_full_unstemmed Trace element accumulation in lotic dragonfly nymphs: Genus matters
title_short Trace element accumulation in lotic dragonfly nymphs: Genus matters
title_sort trace element accumulation in lotic dragonfly nymphs: genus matters
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5313161/
https://www.ncbi.nlm.nih.gov/pubmed/28207806
http://dx.doi.org/10.1371/journal.pone.0172016
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