Data/hora: 03/06/2024 09:57:59

Provedor de dados: | 5
País: | France
Título: | Impact of chronic cadmium exposure at environmental dose on escape behaviour in sea bass (Dicentrarchus labrax L.; Teleostei, Moronidae)
Autores: | Faucher, Karine; Fichet, Denis; Miramand, Pierre; Lagardere, Jean-paul.
Data: | 2008
Ano: | 2008
Palavras-chave: | Bioaccumulation; Escape behaviour; Chronic cadmium exposure; Neuromast; Fish lateral system.
Resumo: | The effect of chronic exposure to a low concentration (0.5 mu g 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 4 h 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). (C) 2007 Elsevier Ltd. All rights reserved.
Tipo: | Text
Idioma: | Inglês

Identificador:

http://archimer.ifremer.fr/doc/2008/publication-3939.pdf

DOI:10.1016/j.envpol.2007.02.017

Editor: | Elsevier
Relação: | http://archimer.ifremer.fr/doc/00000/3939/
Formato: | application/pdf
Fonte: | Environmental Pollution (0269-7491) (Elsevier), 2008 , Vol. 151 , N. 1 , P. 148-157
Fonte: | 2008 Elsevier Ltd All rights reserved.