Inhibition zones between 14 mm and 17 mm were
measured for C. rubrum, Drachiella minuta, F. rufolanosa
and H. incurvus. MIC valuesb400 μg/ml for P.
anguilliseptica were only attained by G. cornea (g) and
F. rufolanosa extracts. The MIC value for oxytetracycline
against P. anguilliseptica was 0.08 μg/ml.
An influence on the growth of Aeromonas salmonicida
was detected for 8 seaweed species. Asparagosis
armata showed the strongest activity (17 mm). H.
incurvus and F. rufolanosa developed inhibition zones
between 5 and 10 mm.