These results indicate that the major virulence genotype of Anhui isolation strains is the high virulence phenotype of alt~+aha1~+aerA~+ and the virulence gene alt generally exists in different Aeromonas phenospecies.

• 表明气单胞菌安徽分离株的主要毒力基因型是alt+aha1+aerA+的高毒力表型,alt毒力基因普遍存在于不同表型种气单胞菌中。