Heavy infection of Ichthyophthirius multifiliis in striped catfish (Pangasianodon hypophthalmus,Sauvage 1878) and its treatment trial by different therapeutic agents in a control environment |
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| Authors: | M. A. A. Mamun S. Nasren K. H. Srinivasa S. S. Rathore P. B. Abhiman K. Rakesh |
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| Affiliation: | 1. Department of Fish Health Management, Faculty of Fisheries, Sylhet Agricultural University, Sylhet, Bangladesh;2. Laboratory of Aquatic Health Management, Department of Aquaculture, College of Fisheries, Karnataka Veterinary, Animal and Fisheries Sciences University, Mangalore, Karnataka, Indiamamunff@gmail.com;4. Laboratory of Aquatic Health Management, Department of Aquaculture, College of Fisheries, Karnataka Veterinary, Animal and Fisheries Sciences University, Mangalore, Karnataka, India;5. Department of Fish Biology and Genetics, Faculty of Fisheries, Sylhet Agricultural University, Sylhet, Bangladesh |
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| Abstract: | ABSTRACTStriped catfish (Pangasianodon hypophthalmus) fingerlings were stocked (60 fishes/m3) in cemented square tanks for ornamental fishery purposes at the College Fish Farm in Mangalore. A total of 400 fishes with a mean weight (g) ranging from 3.24 ± 1.21 to 6.70 ± 1.13 and a mean length (cm) of 7.50 ± 0.94 to 9.50 ± 1.10 were examined. A severe outbreak of salt-like granule white spots was found on the body surface. Ichthyophthirius multifiliis, a ciliate pathogen, was identified as the causative agent by clinical signs, wet mount, and histopathological observations. Infected fishes were transferred and equally distributed to the 0.45 m3 glass aquaria and treated with three treatments: (T1) methylene blue + salt; (T2) raising temperature with salt; and (T3) formalin + malachite green. The best fingerling survival (55 ± 9.36%) was obtained by elevated water temperature with salt in T2. |
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| Keywords: | White spot Pangasianodon hypophthalmus Ichthyophthirius multifiliis Mangalore treatment Epistylis |
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