Development of the quality control to recover survival and reproductive characteristics in the flightless strain of Harmonia axyridis Pallas (Coleoptera : Coccinellidae)

首先，研究了飞行能力降低的人工选择对瓢虫成活率和繁殖力的影响。在实验室条件下进行人工选择，第36代无飞品系的孵化率、羽化率和繁殖力均显著低于对照品系。其次，研究了回交法抵消近交有害效应的有效性。结果表明，该方法有效地恢复了无飞菌株的孵化率和繁殖力。

First, the effects of artificial selection for reduced flight ability on survival rate and fecundity of the ladybird beetle Harmonia axyridis were assessed. Hatching rate, emergence rate and fecundity of flightless strain were lower than those of control one significantly in the 36th generation after artificial selection was started under laboratory conditions. Second, the effectiveness of back cross method which can counteract deleterious effects of inbreeding was investigated. Our results suggest that the method is effective, because hatching rate and fecundity of the flightless strain of H. axyridis recovered.