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

DOI: 10.5958/0976-0555.2015.00113.2    | Article Id: B-2708 | Page : 227-230
Citation :- 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.2015.(49):227-230
Sumanta Kumar Mallik*, Neetu Shahi, Partha Das, N.N. Pandey, R.S. Haldar, B.S. Ananda Kumar and Suresh Chandra sumanta1@rediffmail.com
Address : ICAR-Directorate of Coldwater Fisheries Research, Anusandhan Bhavan, Bhimtal, Nainital-263136, India.

Abstract

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

Keywords

Common salt Dip treatment Formalin Ichthyophthirius multifiliis Schizothorax richardsonii.

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