Bacteria Associated with the Gills of Salmonid Fishes in Freshwater

摘要

The bacteria on the gills of 7 species of freshwater salmonid fishes were examined qualitatively and quantitatively. Both wild and hatchery cultured salmonids were examined. The former were obtained from 12 different locations in British Columbia. Species ofPseudomonasandCytophagapredominated on both groups of fish. The microflora of the wild fish also containedAeromonasand members of theBrevibacterium–coryneform–Erysipelothrixgroup. The microflora of cultured fish was less varied. As many as 106viable organisms/g wet weight of gill tissue were recove