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在四川,栗穗螟Mampava bipuntella Ragonot的寄主为高粱和玉米。年发生1～3代。以幼虫随寄主收获转移到房屋墙壁和用具缝穴内越冬。成虫主要选择抽穗至灌浆期高粱穗、抽雄散粉期玉米雄花产卵。雌虫平均产卵量50粒左右。初孵幼虫可取食扬花至蜡熟期的高粱,食量因生育期不同为18～27粒。第一代部分幼虫和第二代大部分幼虫滞育。温、湿度对成虫期和幼虫初孵期影响较大,高温低温成虫生活力衰退,初孵幼虫死亡率增加。寄主植物种类和生育期对幼虫发育速度、存活率、滞育率、蛹重和成虫生殖力有明显影响;寄主适宜成虫产卵生育期与成虫发生期遇合的时间长短是种群数量变动的主要因素。
In Sichuan, the host of Mampava bipuntella Ragonot is sorghum and corn. Occurred in 1 to 3 generations. With the larvae with the host harvest transferred to the house walls and utensils seam winter. The main selection of adult worms to grain filling stage sorghum spike, tasseled loose powder corn male flowers spawning. Female average fecundity 50 or so. Newly hatched larvae can take flowering to wax maturity sorghum, food intake due to the different growth period of 18 to 27. The first generation of part larvae and the second generation of most larvae diapause. Temperature and humidity had a great effect on the adult and larvae ’s initial incubation period. The viability of the hypothermia and low temperature adults declined and the mortality of newly hatched larvae increased. The host plant species and growth period had significant effects on the larval development rate, survival rate, diapause rate, pupal weight and adult fecundity. The duration of the coincidence of host-suitable adult oviposition stage and adult stage was the main factor of population variation .