sealed brood

During the summer period the mortality of the egg, larva and sealed brood were 24.8%, 45.1% and 16% in Fu Zhou area.
福州地區(qū)中華蜜蜂在越夏期,卵、幼蟲、封蓋子的死亡率分別爲24.8%,45.1%和16%,幼蟲的死亡率較高。