【摘要】 实验结果表明 ,南美斑潜蝇幼虫的密度 ,对黄色潜蝇茧蜂的寄生作用有一定程度的影响 ,随寄主幼虫密度的增加 ,被寄生的幼虫数量相对变少。黄色潜蝇茧蜂对南美斑潜蝇幼虫的瞬时攻击率为 0 3886 ,寄生一头寄主幼虫需要 0 6 2 4小时 ,在 2 4小时内寄生量的最大理论值为 38 4 6头。黄色潜蝇茧蜂成虫自身密度 ,对寄生作用也有一定程度的影响 ,随着黄色潜蝇茧蜂数量的逐渐增加 ,寄生蜂的发现域逐渐变小 ,说明寄生蜂之间存在相互干扰作用更多还原

【Abstract】 The results of the experiments shows that the larvae density of Liriomyza huidobrensis significantly affected parasitism of Opius flavus Weng et Chen. It was concluded that the instant attacking- ability of Opius flavus Weng et Chen was 0.3886. A female, parasitizing one host larva with 0.624 hours, could lay 38.46 eggs within one day theoretically. The density of Opius flavus Weng et Chen also affected its parasitism. The attacking ability would decreased with the rising of the number of the wasp, parasitizing the same number of host larvae.更多还原