Incidence of epizootic ulcerative syndrome (EUS) in freshwater fishes in the endemic area of Punjab, Pakistan
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Date
2001
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Incidence of Epizootic Ulcerative Syndrome (EUS) has been recorded for the first timein freshwater fishes in the endemic area of Punjab, Pakistan. Survey of private fish farms,hatchery and natural water bodies was conducted in a radius of 14 Km from around riverRavi near Lahore (Punjab Province) Pakistan. Out Of 1628 fishes belonging to 18 genera,517 fishes of 10 genera were found affected with EUS. The incidence of EUS inculturable fishes was higher in Cirrhina mrigala (15.4%) moderate in Catla cat/a (13.3%)and lower in Labeo rohita (5.0%). Exotic fish, Chinese carp Ctenoparyngodon idella andHypophthalmicthys molitrix were not affected with EUS. In non-culturable fishes theincidence of EUS was highest in Channa punctatus (72.8%) moderate in by C. straitus(65.45%) and comparatively lower Puntius ticto (43.7%). A slow growing temperaturesensitive Saprolegnia spp. was isolated from all of EUS infected fish species. Aeromonasspp. and Pseudomonas spp. were isolated from the diseased fishes. Ectoparasites viz.Lernaea, Argulus and Triclwdina spp. were also isolated from the skin and gills of infectedfish species. The disease was more severe in water having low alkalinity (70 mg/1),hardness (75 mg/1) and low temperature of 10-12 °C.Journal
Bangladesh Journal of Fisheries ResearchVolume
5Issue/Article Nr
1Page Range
45-52Collections