Isolation of a Loma salmonae variant: biological characteristics and hostrange

摘要

A Salvelinus-infecting variant of Loma salmonae, derived from naturally-infected Chinook salmon Oncorhynchus tshawytscha by serial passage through brook trout Salvelinus fontinalis. has been isolated and amplified. Loma salmonae SV (Salvelinus-variant) has a high preference for species of Salvelinus (brook trout and Arctic charr S. alpinus) and low virulence and preference for species of Oncorhynchus (rainbow trout O. mykiss, Chinook salmon, coho salmon O. kisutch) or Salmo (Atlantic salmon Salmo salar). Although this variant of L. salmonae was different from the original, the differences do not justify describing, it as a new species, although definitive determination is pending.