Article (Scientific journals)
Impact of chronic cadmium exposure at environmental dose on escape behaviour in sea bass (Dicentrarchus labrax L.; Teleostei, Moronidae).
Faucher, Karine; Fichet, Denis; Miramand, Pierre et al.
2008In Environmental Pollution, 151 (1), p. 148-57
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Keywords :
Animals; Bass/physiology; Cadmium/analysis/toxicity; Environmental Exposure; Escape Reaction/drug effects; Gills/chemistry; Lateral Line System/drug effects/ultrastructure; Microscopy, Electron, Scanning; Seawater; Skin/chemistry; Time; Toxicity Tests, Chronic/methods; Water Pollutants, Chemical/analysis/toxicity
Abstract :
[en] The effect of chronic exposure to a low concentration (0.5 microg l(-1)) of cadmium ions was investigated on escape behaviour of sea bass, Dicentrarchus labrax, using video analysis. Observations were also performed on the microanatomy of lateral system neuromasts. When fish were exposed for 4h per day over 8 days to the cadmium ions, most of both types of neuromasts observed remained intact. However, some of them presented damaged sensory maculae. Whereas before cadmium exposure, fish responded positively to nearly all the lateral system stimulations, after exposure they decreased by about 10% their positive responses to stimulations. From the 15th day after the beginning of cadmium exposure, neuromasts presented progressively less damage, cadmium accumulation in gills and scales decreased significantly and fish escape behaviour had recovered. This study presents a new concept in ecotoxicology: using behavioural change to reveal the effects of pollution levels, scarcely detectable by currently used techniques (physiological responses).
Disciplines :
Environmental sciences & ecology
Author, co-author :
Faucher, Karine ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Morphologie fonctionnelle et évolutive
Fichet, Denis
Miramand, Pierre
Lagardère
Language :
English
Title :
Impact of chronic cadmium exposure at environmental dose on escape behaviour in sea bass (Dicentrarchus labrax L.; Teleostei, Moronidae).
Publication date :
2008
Journal title :
Environmental Pollution
ISSN :
0269-7491
eISSN :
1873-6424
Publisher :
Elsevier Science, Oxford, United Kingdom
Volume :
151
Issue :
1
Pages :
148-57
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 04 November 2009

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