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Lake trophic status and bioaccumulation of polychlorinated biphenyls in benthic organisms: a comparison between littoral and profundal invertebrates

Holmqvist, Niklas LU ; Stenroth, Patrik LU ; Berglund, Olof LU ; Nyström, Per LU ; Granéli, Wilhelm LU and Larsson, Per LU (2005) In Canadian Journal of Fisheries and Aquatic Sciences 62(6). p.1201-1209
Abstract
We investigated the influence of lake trophic status on accumulation of polychlorinated biphenyls (PCBs) in littoral and profundal invertebrates from 19 lakes in southern Sweden. The PCB concentration in profundal chironomids (Chironomus sp.) was negatively correlated with lake trophy but the concentration in littoral crayfish (Pacifasticus leniusculus) was unrelated to shifting nutrient regimes. PCB concentrations in chironomids were negatively correlated, while crayfish did not correlate with lake total phosphorus. Two findings indicate that different processes determine bioaccumulation in littoral and profundal invertebrates: (i) a lack of correlation between PCB concentrations in crayfish and chironomids within lakes and (ii) some... (More)
We investigated the influence of lake trophic status on accumulation of polychlorinated biphenyls (PCBs) in littoral and profundal invertebrates from 19 lakes in southern Sweden. The PCB concentration in profundal chironomids (Chironomus sp.) was negatively correlated with lake trophy but the concentration in littoral crayfish (Pacifasticus leniusculus) was unrelated to shifting nutrient regimes. PCB concentrations in chironomids were negatively correlated, while crayfish did not correlate with lake total phosphorus. Two findings indicate that different processes determine bioaccumulation in littoral and profundal invertebrates: (i) a lack of correlation between PCB concentrations in crayfish and chironomids within lakes and (ii) some differences in congener distribution in the two species. We suggest a possible explanation in that chironomids are directly exposed to settling material from the pelagic zone, while crayfish are omnivorous and feed mainly in the littoral zone. A intensive investigation on one pond population could not reveal any individual factors, such as lipid content, size, or sex, influencing bioaccumulation of PCBs in crayfish. (Less)
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author
organization
publishing date
type
Contribution to journal
publication status
published
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in
Canadian Journal of Fisheries and Aquatic Sciences
volume
62
issue
6
pages
1201 - 1209
publisher
National Research Council Canada
external identifiers
  • wos:000230500400001
  • scopus:27144506010
ISSN
1205-7533
DOI
10.1139/F05-018
language
English
LU publication?
yes
id
4e604ac4-e6e6-48ca-a87d-ece720be8073 (old id 146469)
alternative location
http://pubs.nrc-cnrc.gc.ca/cgi-bin/rp/rp2_abst_e?cjfas_f05-018_62_ns_nf_cjfas6-05
date added to LUP
2007-06-27 09:47:44
date last changed
2017-02-26 03:42:20
@article{4e604ac4-e6e6-48ca-a87d-ece720be8073,
  abstract     = {We investigated the influence of lake trophic status on accumulation of polychlorinated biphenyls (PCBs) in littoral and profundal invertebrates from 19 lakes in southern Sweden. The PCB concentration in profundal chironomids (Chironomus sp.) was negatively correlated with lake trophy but the concentration in littoral crayfish (Pacifasticus leniusculus) was unrelated to shifting nutrient regimes. PCB concentrations in chironomids were negatively correlated, while crayfish did not correlate with lake total phosphorus. Two findings indicate that different processes determine bioaccumulation in littoral and profundal invertebrates: (i) a lack of correlation between PCB concentrations in crayfish and chironomids within lakes and (ii) some differences in congener distribution in the two species. We suggest a possible explanation in that chironomids are directly exposed to settling material from the pelagic zone, while crayfish are omnivorous and feed mainly in the littoral zone. A intensive investigation on one pond population could not reveal any individual factors, such as lipid content, size, or sex, influencing bioaccumulation of PCBs in crayfish.},
  author       = {Holmqvist, Niklas and Stenroth, Patrik and Berglund, Olof and Nyström, Per and Granéli, Wilhelm and Larsson, Per},
  issn         = {1205-7533},
  language     = {eng},
  number       = {6},
  pages        = {1201--1209},
  publisher    = {National Research Council Canada},
  series       = {Canadian Journal of Fisheries and Aquatic Sciences},
  title        = {Lake trophic status and bioaccumulation of polychlorinated biphenyls in benthic organisms: a comparison between littoral and profundal invertebrates},
  url          = {http://dx.doi.org/10.1139/F05-018},
  volume       = {62},
  year         = {2005},
}