The results revealed that the optimum temperature for pupal preservation was 24 ~ 25 ℃ . Feeding of good quality and sufficient amount of mulberry leaves could reduce the occurrence of unlaid eggs .

结果表明： 幼虫 期良桑饱食，蛹 期以24～25℃保护可减少 遗腹卵的发生；

Stubborn unlaid ghost / That breaks his magic chains at curfew time ( John Milton )

坚持 不眠的幽灵/在宵禁时分解 除了他的魔法链（ 约翰米尔顿）

After mating and oviposition statistics showed that the higher of the percentage of small eggs is the more of the unlaid eggs is .

交配产卵后， 初步统计发现小卵百分率越大， 则 遗腹卵有越多的 倾向。

The occurrence of unlaid eggs were investigated through different mulberry quantity feeding in larval stadium different temperature preserving in pupal span different mating time and medication in moth stage of 9 · Fu × 7 · Xiang ( F 1 and its parents ) .

以9·芙×7·湘及其 原种为 材料，通过幼虫 期不同给桑量饲养、蛹期不同温度保护、不同交配时间及交配 前后药物 处理，调查 家蚕 的 遗腹卵发生情况。

Research on the Methods of Reducing the Occurrence of Unlaid Eggs in Silkworm Bombyx mori

减少家蚕 遗腹卵发生的方法探讨