SOME STUDIES ON METACERCARIAL INFECTION IN SCHILBE MYSTIS FRESH WATER NILE FISH AT SCHILBE MOUAC PROVINCE, EGY ACIDS ON THE THE EFFECT OF HOUSE HOLD DILUTED ACIDS ON THE VIABILITY AND INFECTIVITY ON THE METACERCARIAE OF STICTODORA TRIDACTYLA MARTIN & KUNTZ, 1955 AND PROHEMISTOMUM VIVAX SONSIND, 1892

Document Type : Research article

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The effect of house-hold diluted acids on the metacercariae of Stictodora tridactyla and prohemistomum vivax infecting the Nile fresh water fish Schilbe mystis in Sohag province is studied. The effect of Acetic acid (commercial venjar, 6%) was found to be more drasting than the effect of Citric acid (Lemon juice). Results of such work lead to the conclusion that the dilutions of Acetic acid (100%, 50%, and 25%) were lethal to all metacercariae exposed for 24 hs. On the other hand, the dilutions of acetic acid (5%, 1%, 0.5% and 0.25%) were lethal to 25%, 11%, 5% and 2% of exposed metacercariae respectively. The dilutions of Citric acid (100%, 50% 25% and 5%) were lethal to all metacercariae exposed for 24 hs. On the other hand, the dilutions of Citric acid (1%, 0.5%, and 0.25%) were lethal to 18%, 11% and 9% of exposed metacercar iae respectively. Test of the viability and infectivity of the metacercariae was done by microscopic examination but also by experimental infection in domestic fowls.

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