五种蚜虫对异色瓢虫生长发育和繁殖的影响

Effects of five species aphids on development and fecundity of Harmonias axyridis (Pallas)

采用室内饲喂法研究了棉蚜、禾谷缢管蚜、白杨毛蚜、桃粉蚜和菜缢管蚜对异色瓢虫生长发育和繁殖的影响,并以所获相关数据组建生命表。结果表明:异色瓢虫的世代存活率、净增殖率在以白杨毛蚜和菜缢管蚜为食物时较高,分别为86.7%、78.3%和158.5、271.7;平均单雌产卵量在以桃粉蚜和菜缢管蚜为食物时较高,分别为1396和1835粒;内禀增长率除以白杨毛蚜为食物时较低外(0.06),其它四种均接近(0.10～0.13)。综合评价,五种蚜虫中菜缢管蚜是饲养异色瓢虫最为理想的食物。

The effects of five species aphids, Aphis gossypii（Glover）, Rhopalosiphum padi （L.）, Chai- tophorus populeti （Panzer）, Hyalopterus amygdale（Blanchard）, and Lipaphis erysimi（Kaheback）, on development and fecundity of Harmonia axyridis （Pallas） were studied in laboratory. The results showed that the survival rate and net reproduction rate of H.axyridis fed on C. populeti and L. erysimi were 86.7%, 78.3% and 158.5, 271.7 respectively. The number of eggs laid per female was 1835 fed on L. erysimi and 1396 on H. amygdale. Intrinsic increase rate was 0.10 -0.13 fed on the other four species aphids except for the lowest one （0.06） on C. populeti. L.erysimi was the most suitable food for development of H.axyridis among five species aphids.