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The Tolerance of Selected Species Fish Eggs to the Antifungal Baths
RAŠKA, Karel
The antifungal detergents Jodisol and Aquahum were tested on the fish eggs of the common carp (Cyprinus carpio), the sheatfish (Silurus glanis), the tench (Tinca tinca) and the common barbel (Barbus barbus). On the fish eggs of the African sharptooth catfish (Clarias gariepinus) the detergents Aquahum and Primrose were tested. The fish eggs from artificial spawn were used for the experiments. These experiments were running under laboratory conditions. The bath length was 5 minutes. The fish eggs incubation proceeded on laboratory dish at average water temperature, which was for the carp 22.87 ? 1.38 (min. 20.5; max. 23.8) °C, for the sheatfish 24.03 ? 2.12 (min. 20.4; max. 25.5) °C, for the tench 20.40 ? 2.13 (min. 18.0; max. 22.5) °C, for the common barbel 16.8 ? 0.95 (min. 14.5; max. 18) °C, and for the African sharptooth catfish 22.50 ? 0.35 (min. 22.0; max. 23.0) °C. Using Jodisol the best hatching success for the common carp was achieved when the concentration was 1 ? 10 ml?l-1, for the sheatfish 1 ml?l-1, for the tench 20 ml?l-1, and for the common barbel 50 ml?l-1. Using Aquahum the best hatching success for the common carp was achieved when the concentration was 1 ml?l-1, for the sheatfish 0.1 ml?l-1, for the tench 2 ml?l-1, and for the common barbel 0.1 and 2 ml?l-1. The stable preparation Aquahum with concentration 0.05 ml?l-1 proved the best results for the sheatfish. The preparation Primrose used for the African sharptooth catfish proved the best results with concentration 0.0033 and 0.01 ml?l-1. The detergent Aquahum could be recommended for the baths of the common barbel and the common carp. Jodisol worked well for the tench and the sheatfish. The best detergent for the African sharptooth catfish was Primrose.
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