大规模繁殖白蛾周氏啮小蜂接蜂比例选择

对大规模繁殖白蛾周氏啮小蜂Chouioia cunea时寄主或替代寄主的接蜂比例的选择进行了研究.结果表明,以美国白蛾Hyphantria cunea为寄主时,接蜂时寄主与寄生蜂的比例以1:1和1:2为宜.以柞蚕Antheraea pernyi为寄主时,寄主与寄生蜂的比例以1:50为宜,繁殖出的小蜂田间平均寿命约为6 d.过多地增加接蜂数量,会影响到子代的出蜂数量和雌雄性比等.

Study on the Ratio of Hosts and Wasps When Mass Rearing of Chouioia cunea Yang

The choice of best ratio of host and wasps when mass rearing of Chouioia cunea was studied. The result showed that 1: 1 or 1: 2 were the choice of the ratio of hosts and wasps when choosing fall webworm as a host and 1: 50 when choosing Antheraea pernyi as a host to mass rearing C. cunea. The longevity of C. cunea reared according to this ratio was about 6 days on average in field, which could guarantee them to find suitable hosts. To improperly increase the percent of wasp would have a bad influence on the quantity or ratio of female and male of next generation.