玉米螟赤眼蜂的生物学特性观察

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玉米螟赤眼蜂在北京10月下旬以预蛹虫态越冬,翌年4月中旬羽化。完成一个世代在15℃中需30.5天,30℃中需7.4天。该蜂营两性生殖和产雄孤雌生殖。雌蜂平均产卵81.4粒。成蜂饲以糖饲料,可以显著延长寿命和增加产卵量。温度(相对湿度75%情况下)对成蜂的寿命、产卵量和寄生能力有明显影响。25℃时产卵量和寄生率均为最高,35℃中即不能产卵寄生。在27℃情况下,湿度对该蜂的影响不明显。在29.5、38、50.5、71和91.5%的相对湿度中,分别饲养两代,处理间的寄生率、产卵量、出蜂率和成蜂寿命差异不显著。 Trichogramma ostriniae in Beijing in late October to pre-pupal worm overwintering, ecdysis in mid April the following year. One generation will take 30.5 days at 15 ° C and 7.4 days at 30 ° C. The bee camp reproductive and genital parthenogenesis. The female spawns an average of 81.4 eggs. Into a bee feeding sugar, can significantly extend the life expectancy and increase the amount of eggs. Temperatures (75% relative humidity) have a significant effect on adult life, fecundity and parasitism. At 25 ℃, the amount of spawning and parasitism were the highest, which could not spawn parasitism at 35 ℃. At 27 ℃, the effect of humidity on the bees is not obvious. At 29.5, 38, 50.5, 71 and 91.5% relative humidity, two generations were kept separately, and there was no significant difference in parasitism, fecundity, pest yield and adult bee life among treatments.
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