Immunological Responses, Histopathological Finding and Disease Resistance of Blue (Mytilus edulis) Exposed to Treated and Untreated Municipal Wastewater

Immunological responses, histopathological finding and disease resistance of blue mussel exposed to treated and untreated municipal wastewater were analyzed. The bioassay results showed that higher concentrations of untreated sewage could modulate the immune system of mussels through increase of pha...

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Bibliographic Details
Published in:Aquatic toxicology 2007-04, Vol.82 (1), p.1-1
Main Authors: Akaishi, Fabiola M, St-Jean, Sylvie D, Bishay, Farida, Clarke, John, Rabitto, Indes da S, Oliveira Ribeiro, Ciro ADe
Format: Article
Language:English
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Summary:Immunological responses, histopathological finding and disease resistance of blue mussel exposed to treated and untreated municipal wastewater were analyzed. The bioassay results showed that higher concentrations of untreated sewage could modulate the immune system of mussels through increase of phagocytic activity (PA), nitric oxide (NO) and hydrogen peroxide (H sub(2)O sub(2)) production during 14 days of exposure. Mussels exposed to untreated sewage receiving environment (RE) also presented a high PA, NO and H sub(2)O sub(2) production and lower number of haemocytes compared to mussels from reference sites. Untreated municipal wastewater affected the immune system of blue mussels during 21 days of exposure and the effects were reflected in their capability to resist pathogens.
ISSN:0166-445X