آلودگي انگلي ماهي سيم مولد(abramis brama orientalis, berg1949)

Parasite infection of Bream {Abramis brama orientalis Berg, 1949) in Aras dam Lake

Parasite infection of 256 specimens of Bream (Abramis brama orientalis) surveyed in Aras Dam Lake in the years of 2008-20009.Aceording to the results, 5 parasites recognized, including Trichodina sp (prevalence = 25%, Mean intensity ± Standard= 2.41 ± 0.11 and Range in number 1-11, Gyrodactylus sp (prevalence= 23/43%, Mean intensity ± Standard = 2.49 ±0.12 and Range in number1-8),Dactylogyrus sp(prevalences 10/54%, Mean intensity ± Standard= 1.81 ± 0.09 and Range in number 1-6), Diplostomum sp metacercariae (prevalence= 4/29%, Mean intensity ± Standard- 3.73 ±0.1 and Range in number 1-6) and Ligula intestinalis plerocercoid (prevalences 45/7%, Mean intensity ± Standards 3.09 ± 0.07 and Range in number 1-6).The frequency and infection of parasites were statiscally different between age classes, stages, male and female. In different ageʹs most and latest prevalence infection due were 56/92% to L.intestinalis in 3+ and 0% to Dactylogyrus sp and Diplostomum sp in 2+ respectively. In different male most and latest prevalence infction due were 53/8% to L.intestinalis and 0% to Diplostomum sp respectively. In different female most and latest prevalence infection due were 44/6% to L. intestinalis and 5/39% to Diplostomum sp respectively. In different 4+ most and latest prevalence infections due were 56/92% to L intestinalis and 4/61% to Dactylugyrus sp respectively. In different stages most and latest prevalence infections due were 71/65% to L.intestinalis in first stage and 17/3% to Diplostomum sp respectively in second stage. There species of Gyrodactylus sp and Diplostomum sp are reported in Bream for the first time from Aras Dam Lake.