PMID- 28599207
OWN - NLM
STAT- MEDLINE
DCOM- 20171129
LR  - 20181202
IS  - 1873-6424 (Electronic)
IS  - 0269-7491 (Linking)
VI  - 229
DP  - 2017 Oct
TI  - Mercury and persistent organic pollutants in native and invading forage species 
      of the Canadian Arctic: Consequences for food web dynamics.
PG  - 229-240
LID - S0269-7491(16)32278-3 [pii]
LID - 10.1016/j.envpol.2017.05.085 [doi]
AB  - Contaminant dynamics within Arctic marine food webs may be altered through the 
      climate-driven northward invasions of temperate/boreal species. Here, we compare 
      tissue concentrations of total mercury (THg) and legacy and emerging persistent 
      organic pollutants (POPs) in native versus invading forage species sampled from 
      2012 to 2014 near Arviat, Clyde River, and Resolute Bay, NU, representing, low, 
      mid- and high eastern Canadian Arctic regions, respectively. Concentrations of 
      THg, legacy Sigma-polychlorinated biphenyls (SigmaPCB) and Sigma-organochlorine (SigmaOC) 
      pesticides were detected in all forage species, whereas emerging halogenated 
      flame retardants were detected in only a few individuals. Concentrations of major 
      contaminant groups among regions did not vary for Arctic cod (Boreogadus saida), 
      while for sculpin (Cottoidea) there was no clear latitudinal trend. Thus, 
      considering interspecific variation, native sculpin and northern shrimp (Pandalus 
      borealis) had the highest overall concentrations of THg (0.17 +/- 0.02 and 
      0.21 +/- 0.01 mug g(-1) wet weight, respectively), SigmaPCB (322 +/- 35 and 
      245 +/- 25 ng g(-1) lipid weight (lw), respectively), and SigmaOC (413 +/- 38 and 
      734 +/- 64 ng g(-1) lw, respectively). Comparing the keystone native species, 
      Arctic cod, to its 'replacement' species, capelin (Mallotus villosus) and 
      sandlance (Ammodytes spp.), THg concentrations were higher in Arctic cod compared 
      to capelin (p < 0.001), which was partly explained by differences in fish length. 
      Conversely, capelin and sandlance had higher concentrations of most POPs than 
      Arctic cod (p < 0.02). Neither feeding habitat (based on delta(13)C), trophic 
      position (based on delta(15)N), nor fish length significantly explained these 
      differences in POPs between Arctic cod, capelin and sandlance. Higher POPs 
      concentrations, as well as variation in congener/compound patterns, in capelin 
      and sandlance relative to Arctic cod seem, therefore, more likely related to a 
      more "temperate"-type contaminant signature in the invaders. Nevertheless, the 
      relatively small (up to two-fold) magnitude of these differences suggested 
      limited effects of these ecological changes on contaminant uptake by Arctic 
      piscivores.
CI  - Copyright (c) 2017 Elsevier Ltd. All rights reserved.
FAU - Pedro, Sara
AU  - Pedro S
AD  - Wildlife and Fisheries Conservation Center, Department of Natural Resources and 
      the Environment and Center for Environmental Sciences and Engineering, University 
      of Connecticut, Storrs, CT 06269, USA. Electronic address: sara.pedro@uconn.edu.
FAU - Fisk, Aaron T
AU  - Fisk AT
AD  - Great Lakes Institute for Environmental Research, University of Windsor, Windsor, 
      ON N9B 3P4, Canada.
FAU - Tomy, Gregg T
AU  - Tomy GT
AD  - Department of Chemistry, University of Manitoba, Winnipeg, MB R3T 2N2, Canada.
FAU - Ferguson, Steven H
AU  - Ferguson SH
AD  - Fisheries and Oceans Canada, Central and Arctic Region, Winnipeg, MB R3T 2N6, 
      Canada.
FAU - Hussey, Nigel E
AU  - Hussey NE
AD  - Great Lakes Institute for Environmental Research, University of Windsor, Windsor, 
      ON N9B 3P4, Canada.
FAU - Kessel, Steven T
AU  - Kessel ST
AD  - Great Lakes Institute for Environmental Research, University of Windsor, Windsor, 
      ON N9B 3P4, Canada.
FAU - McKinney, Melissa A
AU  - McKinney MA
AD  - Wildlife and Fisheries Conservation Center, Department of Natural Resources and 
      the Environment and Center for Environmental Sciences and Engineering, University 
      of Connecticut, Storrs, CT 06269, USA. Electronic address: 
      melissa.mckinney@uconn.edu.
LA  - eng
PT  - Journal Article
DEP - 20170607
PL  - England
TA  - Environ Pollut
JT  - Environmental pollution (Barking, Essex : 1987)
JID - 8804476
RN  - 0 (Flame Retardants)
RN  - 0 (Hydrocarbons, Chlorinated)
RN  - 0 (Pesticides)
RN  - 0 (Water Pollutants, Chemical)
RN  - DFC2HB4I0K (Polychlorinated Biphenyls)
RN  - FXS1BY2PGL (Mercury)
SB  - IM
MH  - Animals
MH  - Arctic Regions
MH  - Canada
MH  - Ecosystem
MH  - *Environmental Monitoring
MH  - Fishes
MH  - Flame Retardants/analysis
MH  - *Food Chain
MH  - Hydrocarbons, Chlorinated
MH  - Introduced Species
MH  - Mercury/*analysis
MH  - Pesticides
MH  - Polychlorinated Biphenyls/analysis
MH  - Water Pollutants, Chemical/*analysis
OTO - NOTNLM
OT  - Arctic
OT  - Climate change
OT  - Invasion
OT  - Mercury
OT  - Organic contaminants
EDAT- 2017/06/10 06:00
MHDA- 2017/12/01 06:00
CRDT- 2017/06/10 06:00
PHST- 2016/11/16 00:00 [received]
PHST- 2017/05/25 00:00 [revised]
PHST- 2017/05/29 00:00 [accepted]
PHST- 2017/06/10 06:00 [pubmed]
PHST- 2017/12/01 06:00 [medline]
PHST- 2017/06/10 06:00 [entrez]
AID - S0269-7491(16)32278-3 [pii]
AID - 10.1016/j.envpol.2017.05.085 [doi]
PST - ppublish
SO  - Environ Pollut. 2017 Oct;229:229-240. doi: 10.1016/j.envpol.2017.05.085. Epub 
      2017 Jun 7.