The real mortalities of the three strains were tested by using LC99 value of susceptible baseline, and the resu lt showed that they obeyed the same tendency of the theoretical morta lities.

• 只有武昌种群最为敏感。以相对敏感基线的LC99值检测3个地方种群的实际死亡率,结果与理论死亡率的趋势基本一致。