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Stress caused by social interaction and its effect on susceptibility to Aeromonas hydrophila infection in rainbow trout Salmo gairdneri
Peters, G.; Faisal, M.; Lang, T.; Ahmed, I. (1988). Stress caused by social interaction and its effect on susceptibility to Aeromonas hydrophila infection in rainbow trout Salmo gairdneri. Dis. Aquat. Org. 4(2): 83-89
In: Diseases of Aquatic Organisms. Inter Research: Oldendorf/Luhe. ISSN 0177-5103, more
Peer reviewed article  

Available in Authors 

Keywords
    Bacterial diseases; Biological stress; Fish culture; Aeromonas hydrophila; Salmo gairdneri Richardson, 1836 [WoRMS]; Fresh water

Authors  Top 
  • Peters, G.
  • Faisal, M.
  • Lang, T.
  • Ahmed, I.

Abstract
    Juvenile Salmo gairdneri were exposed simultaneously to social stress and to infection by the opportunistic ubiquitous bacterium Aeromonas hydrophila. Social interaction between randomly chosen pairs was permitted for 11 h consecutively. After the first hour the bacteria were either added to the water or were injected intramuscularly. As an indication of the stress syndrome, subordinate fishes showed enhanced ventilation frequency, elevated plasma glucose level, and increased leucocyte volume. In subordinates the pathogens spread to more organs and were found in greater numbers than in the dominant fishes, independent of the mode of bacterial application.

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