用 18株从鱼类所分离的细菌攻毒剑尾鱼 ,结果显示细菌对剑尾鱼的毒力与回归感染或攻毒敏感鱼的毒力结果较为一致 ,另外 ,用剑尾鱼感染病原菌的适宜途径为背肌注射 ,与原代比较 ,近交高代剑尾鱼个体之间对病原菌的反应较为一致 ,感染后死亡时间相对集中。水生实验动物剑尾鱼在检测鱼类细菌的毒力方面有较好的应用前景 Eighteen strains of bacteria isolated from fish were challenged with the swordtail fish. The results showed that the virulence of the bacteria to the swordtail fish was in good agreement with that of the virulent or virulent-challenged fish. In addition, The appropriate way for the back muscle injection, compared with the original, inbreeding high-end swordfish individual responses to pathogens are more consistent, the time of death after infection is relatively concentrated. Aquatic experimental animals swordtail fish in the detection of fish bacterial virulence has a better application prospects