VOLUM OMAGIAL - Facultatea de Ştiinţe ale Naturii şi Ştiinţe Agricole

Changes of some physiological parameters… / Ovidius University Annals, Biology-Ecology Series 14: 83-88 (2010)
Fig.6. The influence of the Champion fungicide
upon oxygen consumption on prussian carp
Fig.7. The influence of the Tilt fungicide upon
oxygen consumption on prussian carp
Fig.8. The influence of the Tiradin fungicide
upon oxygen consumption on prussian carp
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Clinical symptoms observed during fungicide
exposure (Bravo, Champion, Tilt and Tiradin) of
prussian carp, correspond to observations by other
authors reporting on the toxicity of fungicides [12],
[13], [14].
Common symptoms of initial acute exposure to
fungicides have apparent fish hypoxia, disoriented
(ataxic) at the surface, and mucus-producing effects.
The oxygen consumption was found to be
significantly influenced by the concentration of the
used fungicides.
Bravo 500 SC ,in concentrations of 0.78125 x
10 -3 , 1.5625 x 10 -3 , 3.125 x 10 -3 , 6.25 x 10 -3 and 12,5
x 10 -3 ml / l Bravo, had an overall stimulating effect
on oxygen consumption of prussian carps in the first
phase (with variable duration: 24-96 hours after
exposure) followed by restoration of energy
metabolism after 7 days of exposure to toxic. Tiradin
and Tilt have an inhibitory effect on the energy
metabolism of prussian carps. After 7 days of
exposure to Tilt, for all lots of fish tested, oxygen
consumption values fall below the value recorded
before the introduction of fish in experiments.
Decreased oxygen consumption under the action
of some pesticides and changes in respiratory rate
(Dithane M 45, Reldan, Tilt,) has also been noticed
by Marinescu [12] and Ponepal [13], [14].
Figure 9 show the changes in the average values
of erythrocytes after one and two weeks of exposure
to some fungicides.
Fig. 9. The influence of some fungicide upon
number of erythrocytes on prussian carp