抄録
Bacteriophages of Lactococcus garvieae, designated as PLgW and PLgS, were isolated from sea water and sediment samples by an enrichment method. Morphological and genomic features of these phages were in agreement with those of the L. garvieae phage, designated as PLgY, belonging to the family Siphoviridae that was detected in an L. garvieae strain isolated from diseased yellowtail in the previous study. One hundred and eleven strains of L. garvieae examined were divided into 14 phage types (A_??_N) by using the phage isolates which were differentiated from each other in the infectivity, with a major phage type (type A) containing 73 strains. One phage type (type N) consisting of 9 bacterial strains was insensitive to any of the phages used. However, there were no apparent correlations between the phage types and the geographical sources of the bacterial strains or between phage types and the antigenic forms (KG- and KG+).
