Behavioural sensitivity of a key Southern Ocean species (Antarctic krill, Euphausia superba) to p,p '-DDE exposure

Poulsen, Anita H., Kawaguchi, So, King, Catherine K., King, Robert A. and Bengtson Nash, Susan M. (2012) Behavioural sensitivity of a key Southern Ocean species (Antarctic krill, Euphausia superba) to p,p '-DDE exposure. Ecotoxicology and Environmental Safety, 75 1: 163-170. doi:10.1016/j.ecoenv.2011.09.005


Author Poulsen, Anita H.
Kawaguchi, So
King, Catherine K.
King, Robert A.
Bengtson Nash, Susan M.
Title Behavioural sensitivity of a key Southern Ocean species (Antarctic krill, Euphausia superba) to p,p '-DDE exposure
Formatted title
Behavioural sensitivity of a key Southern Ocean species (Antarctic krill, Euphausia superba) to p,p '-DDE exposure
Journal name Ecotoxicology and Environmental Safety   Check publisher's open access policy
ISSN 0147-6513
1090-2414
Publication date 2012-01-01
Year available 2011
Sub-type Article (original research)
DOI 10.1016/j.ecoenv.2011.09.005
Volume 75
Issue 1
Start page 163
End page 170
Total pages 8
Place of publication Maryland Heights, MO, United States
Publisher Academic Press
Collection year 2012
Language eng
Formatted abstract
Persistent organic pollutants (POPs) have been frequently measured throughout the Southern Ocean food web for which little information is available to assess the potential risks of POP exposure. The current study evaluated the toxicological sensitivity of a key Southern Ocean species, Antarctic krill, to aqueous exposure of p,p′-dichlorodiphenyl dichloroethylene (p,p′-DDE). Behavioural endpoints were used as indicators of sublethal toxicity. Immediate behavioural responses (partial immobility and tail flicking) most likely reflect neurotoxicity, while the p,p′-DDE body residue causing a median level of sublethal toxicity in Antarctic krill following 96 h exposure (IEC50sublethal toxicity=3.9±0.21 mmol/kg lipid weight) is comparable to those known to cause sublethal narcosis in temperate aquatic species. Critical body residues (CBRs) were more reproducible across tests than effective seawater concentrations. These findings support the concept of the CBR approach, that effective tissue residues are comparable across species and geographical ranges despite differences in environmental factors.
Keyword Antarctic krill
Persistent organic pollutant (POP)
p,p '-DDE
Behavioural toxicity
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ
Additional Notes Available online 28 September 2011

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2012 Collection
National Research Centre for Environmental Toxicology Publications
 
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