بررسي ميزان آلودگي انگلي ICHTHYOPHTHIRIUS MULTIFILIIS در مزارع پرورش ماهي قزل آلاي رنگين كمان استان آذربايجان غربي

This survey was carried out to determine the role of water sources, seasons and temperature range on infestation rate of Ichthyophthirius multifiliis. In regard to this aim 373 samples from 38 cultivated fish farm were collected and transferred to Higiene and Feeding lab of Shilat Office from June 2000 to June 2001. This survey showed that infestation rate was 11.26% and main source of fish infestation and distribution within the pools was river water. This finding by Anova test was significant (p<0.05). Role of temperature and season on infestation rate by t-test was significant, as well (p<0.05). So these findings were proved to have directly effects on infestation rate, specially in summer (14%) and temperature of 14.5ʹc(50%).