期刊
FISH & SHELLFISH IMMUNOLOGY
卷 33, 期 4, 页码 1055-1059出版社
ACADEMIC PRESS LTD- ELSEVIER SCIENCE LTD
DOI: 10.1016/j.fsi.2012.08.006
关键词
Silver catfish; Innate immunity; Agrichemical; Atrazine
资金
- Conselho Nacional de Desenvolvimento Cientifico e Tecnologico (CNPq), Brazil [473198/2007-0]
The impact of agrichemicals on aquatic vertebrate species has been a matter of increasing concern to researchers and environmentalist. In the present study, we evaluated the effects of a sublethal concentration of atrazine (10% of the LC50-96h), a world-wide used herbicide, on the innate immune system of silver catfish (Rhamdia quelen). A significant reduction on phagocytic index, bacteria agglutination and bactericidal activity of the serum, serum lysozyme and total serum peroxidase activity was observed in fish exposed to atrazine for 24 h. After 10 days exposure to atrazine, only bactericidal activity of the serum, bacteria agglutination and total serum peroxidase activity were significantly reduced. Atrazine had no effect on the natural complement hemolytic activity. Our results demonstrate that atrazine decreases the innate immune response of fingerlings, which might increase its susceptibility to opportunistic pathogens. (C) 2012 Elsevier Ltd. All rights reserved.
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