Record Display for the EPA National Library Catalog


Main Title Stress-Induced Transmisson of 'Yersinia ruckeri' Infection from Carriers to Recipient Steelhead Trout 'Salmo gairdneri' Richardson.
Author Hunter, Valerie A. ; Knittel, M. D. ; Fryer, J. L. ;
CORP Author National Heart, Lung, and Blood Inst., Bethesda, MD.
Year Published 1981
Report Number EPA-600/J-80-347;
Stock Number PB82-128208
Additional Subjects Bacterial diseases ; Disease vectors ; Infectious diseases ; Fishes ; Bacteria ; Survival ; Immunity ; Reprints ; Yersinia ruckeri ; Salmo gairdneri
Library Call Number Additional Info Location Last
NTIS  PB82-128208 Some EPA libraries have a fiche copy filed under the call number shown. 07/26/2022
Collation 8p
The transmission of Yersinia ruckeri has been investigated in steelhead trout using asymptomatic carriers of the causative bacterium of enteric redmouth disease. It was found that unstressed carrier fish did not transmit the bacterium to recipient fish to cause either an epizootic or produce new carrier fish. However, when the carriers were stressed with heat, the bacterium was transmitted from the carrier to recipient fish producing a lower intestinal carrier state but no deaths. Examination of experimentally infected fish to determine the number of carriers among the survivors indicated that the frequency varied as a function of time following infection. When immunized fish were challenged with Y. ruckeri they became temporary carriers of the bacterium for up to 3 days; but were not able to transmit the infection to healthy recipient fish.