نوع مقاله : مقاله پژوهشی
نویسندگان
1 گروه پاتوبیولوژی، بخش انگل‌شناسی، دانشکده دامپزشکی، دانشگاه ارومیه، ارومیه،ایران
2 عضو هیئت علمی/دانشکده دامپزشکی دانشگاه ارومیه
3 مرکز تحقیقات آرتمیای کشور، موسسه تحقیقات علوم شیلاتی کشور، سازمان تحقیقات، آموزش و ترویج کشاورزی، ارومیه، ایران.
چکیده
کلیدواژه‌ها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
Rainbow trout (Oncorhynchus mykiss) is one of the economically and nutritionally important famed species of cold-water fish in Iran. Ichthyophthirius multifiliis is a parasitic infection; that causes economic losses in aquaculture industry. The present study aimed to investigate the in-vitro effect of Aquastart on I. multifiliis theronts isolated from Rainbow trout. From a rainbow trout fish farm, 20 infected fish (average weight: 20±4 gr and average length: 14±2 cm) with I. multifiliis were trapped. They were exposed to 80 non-infected fingerling fish in three phases. The theronts were isolated from throphonts on the skin and gills of infected fish and counted. The concentrations of 5, 10, 20, 50, 100, and 200 mg/kg of Aquastart were provided from stock Aquastart (400 mg/kg), and 300 theronts were added. The lethal effect of Aquastart against the examined theronts were determined along with two control groups of Malachite green (0.05 mg/kg), and 50 ml dechlorinate water without Aquastart. The minimum and maximum lethal effects of Aquastart were at 0.67 ± 0.038 (200 mg/L) and 150 ± 1.2 (5 mg/L), respectively. The duration of the lethal effect of Aquastart had a significant association with concentration. From the results of this study, it was concluded that Aquastart had a toxic effect on theronts of I. multifiliis isolated from Rainbow trout and different concentrations of Aquastart at different time durations eliminated them.
کلیدواژه‌ها [English]
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