Aqueous uptake and sublethal toxicity of p,p'-DDE in non-feeding larval stages of Antarctic krill (Euphausia superba)

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Title Aqueous uptake and sublethal toxicity of p,p'-DDE in non-feeding larval stages of Antarctic krill (Euphausia superba)
Author Poulsen, A.; Kawaguchi, S.; Kukkonen, J. V. K.; Leppanen, M.; Bengtson Nash, Susan
Journal Name Environmental Pollution
Year Published 2012
Place of publication United Kingdom
Publisher Pergamon
Abstract This study evaluated the toxicological sensitivity of non-feeding larval stages of a key Antarctic species (Antarctic krill, Euphausia superba) to p,p0-dichlorodiphenyl dichloroethylene (p,p0-DDE) exposure. The aqueous uptake clearance rate of 84 mL g1 preserved weight (p.w.) h1 determined for p,p0-DDE in Antarctic krill larvae is comparable to previous findings for small cold water crustaceans and five times slower than the rates reported for an amphipod inhabiting warmer waters. Natural variations in larval physiology appear to influence contaminant uptake and larval krill behavioural responses, strongly highlighting the importance of time of measurement for ecotoxicological testing. Sublethal narcosis (immobility) was observed in larval Antarctic krill from p,p0-DDE body residues of 0.2 mmol/kg p.w., which is in agreement with findings for adult krill and temperate aquatic species. The finding of comparable body residue-based toxicity of p,p0-DDE between polar and temperate species supports the tissue residue approach for environmental risk assessment of polar ecosystems.
Peer Reviewed Yes
Published Yes
Alternative URI http://dx.doi.org/10.1016/j.envpol.2011.09.022
Volume 160
Issue Number 1
Page from 185
Page to 191
ISSN 0269-7491
Date Accessioned 2011-11-16; 2012-07-13T05:15:52Z
Research Centre Environmental Futures Research Institute
Faculty Faculty of Science, Environment, Engineering and Technology
Subject Environmental Sciences
URI http://hdl.handle.net/10072/45865
Publication Type Journal Articles (Refereed Article)
Publication Type Code c1

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