Title
Can damselfly larvae (**Ischnura elegans**) be used as bioindicators of sublethal effects of environmental contamination?Can damselfly larvae (**Ischnura elegans**) be used as bioindicators of sublethal effects of environmental contamination?
Author
Faculty/Department
Faculty of Sciences. Biology
Research group
Systemic Physiological and Ecotoxicological Research (SPHERE)
Evolutionary ecology group (EVECO)
Department of Biology
Publication type
article
Publication
Amsterdam,
Subject
Biology
Pharmacology. Therapy
Source (journal)
Aquatic toxicology. - Amsterdam
Volume/pages
154(2014), p. 270-277
ISSN
0166-445X
ISI
000340339800029
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The present study measured various pesticides and trace metals, together with sublethal effect biomarkers (lipid, protein and glycogen levels, acetylcholinesterase (AChE) and glutathione-S-transferase (GST) activities) in damselfly larvae (Ischnura elegans) at sixteen sampling sites in Flanders (Belgium). Four pesticides (chloridazon, dichlorvos, terbutylazine, metolachlor), some of them hardly measurable in surface water, and all trace metals were above the limit of quantification in damselfly tissue. A principal component analysis (PCA) on the accumulated pollutant concentrations returned five pollutant axes explaining 85.8% of the total variation. Based on these PCA-axes a hierarchical cluster analysis revealed that the 16 sampled ponds could be classified in 7 groups. Increasing dichlorvos levels in the animals resulted in a lower body mass. Body mass was negatively correlated with GST and AChE activities, lipid and glycogen levels. The present findings provide evidence of toxicity-induced sublethal stress of dichlorvos accumulation in natural populations of I. elegans.
E-info
https://repository.uantwerpen.be/docman/iruaauth/0ac5c5/9fa958f5519.pdf
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