Effects of water pollution caused by organic material on gild-head seabream (sparus aurata) and European sea bass (dicentrarchus labrax) physiology
1994
Papoutsoglou, S.E. | Tziha, G. (Agricultural Univ., Athens (Greece). Faculty of Animal Production. Lab. of Animal Hydrobiology)
The effects associated with relatively low pH and dissolved oxygen, as well as with various NH3 levels, caused by experimentally created high water organic matter level, on European sea bass and gild head sea bream physiology were investigated. Three populations of five specimens of each species were used (sea bream b.wt. 170-203g and sea bass 128-185g) for 50 days and the results obtained were compared to those observed in specimens of the same species taken from two farms operated with the net cages rearing technique. Analyses of variance indicated that total liver lipids, hepatosomatic index, haematocrit, triglycerides, total plasma lipids and cholesterol levels were significantly (P0.05) affected in both species. Although the present results have to be confirmed by more research work, it might be said that the levels of the investigated water parameters could be a strong reason for the creation of fish physiology disturbances.
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