In
particular, it was contended that subsp. achromogenes
and masoucida were more closely related to A. hydrophila
than to A. salmonicida [121]. Later, it was mooted
that subsp. masoucida bridged typical A. salmonicida
and A. hydrophila . Yet, A. salmonicida subsp.
masoucida is non-motile, sensitive to A. salmonicida
bacteriophages, possesses an antigenic profile specific to
A. salmonicida, and shares a DNA homology of 103%
with A. salmonicida. By PCR, a combination of
achromogenes with masoucida could be justified, but
this was not substantiated by ribotyping and RAPD analyses
. Phenotypic data suggest a case for combining
subsp. masoucida with salmonicida, and subsp.
achromogenes with Haemophilus piscium, which is the