title: [Tetraonchus alaskensis Price, 1937 and its epizootic role].
abstract: Mortality of pelyad (Coregonus peled) caused by Tetraonchus alaskensis took place in winter 1973 in the Voikara and Syn rivers (the Ural tributaries of the Lower Ob) during anadromous and catadromous migrations. The highest infection rate was observed in older fished. Up to 2330 specimens of the parasite were recorded from the gills of one pelyad. A low infection rate with T. alaskensis was recorded from Coregonus nasus, C. lavaretus pidgian and Stenodu. The mortality coincided with the period of the greatest abundance of the Ob pelyard stock.
mesh_terms: D000818:Animals; D004199:Disease Vectors; D005393:Fish Diseases / Q000401:mortality / Q000469:parasitology*; D005618:Fresh Water; D012800:Siberia; D014200:Trematoda; D014201:Trematode Infections / Q000401:mortality / Q000662:veterinary*
vernacular_title: Tetraonchus alaskensis Price, 1937 i ego epizooticheskoe znachenie.