Indian Journal of Animal Research

  • Chief EditorK.M.L. Pathak

  • Print ISSN 0367-6722

  • Online ISSN 0976-0555

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Indian Journal of Animal Research, volume 49 issue 2 (april 2015) : 227-230

Occurrence of Ichthyophthirius multifiliis (White spot) infection in snow trout, Schizothorax richardsonii (Gray) and its treatment trial in control condition

Sumanta Kumar Mallik*, Neetu Shahi, Partha Das, N.N. Pandey, R.S. Haldar, B.S. Ananda Kumar, Suresh Chandra
1ICAR-Directorate of Coldwater Fisheries Research, Anusandhan Bhavan, Bhimtal, Nainital-263136, India.
Cite article:- Mallik* Kumar Sumanta, Shahi Neetu, Das Partha, Pandey N.N., Haldar R.S., Kumar Ananda B.S., Chandra Suresh (2024). Occurrence of Ichthyophthirius multifiliis (White spot) infection in snow trout, Schizothorax richardsonii (Gray) and its treatment trial in control condition. Indian Journal of Animal Research. 49(2): 227-230. doi: 10.5958/0976-0555.2015.00113.2.
High altitude raceways reared Schizothorax richardsonii stocks were monitored periodically for white spot infection at experimental coldwater fish farm, Chhirapani, Champawat, Uttarakhand. Total 1268 numbers of fishes with mean length (cm) ranging from 15.53 ± 0.20 to 16.86 ± 0.08, and mean weight (g) 24.70 ± 0.05 to 26.73 ± 0.06 were examined from January - December 2009. Presence of pinhead sized white spots (0.4 to 0.8 mm) was observed on dorsal body surface and caudal fins of sampled fishes during month of April. The causative agent was identified to be a ciliate parasite, Ichthyophthirius multifiliis. A temperature dependant infection pattern was noted with maximum prevalence (%) of 84.80 ± 1.83 in July followed by a decline in December (21.99 ± 2.13). Prevalence varied significantly (p
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