不同寄主植物对烟粉虱发育和繁殖的影响

研究了烟粉虱 B型 ( Bemisia tabaci Gennadius)在番茄、茄子、黄瓜和甘蓝上的发育、存活和繁殖情况。在 2 6± 1℃的条件下 ,烟粉虱从卵发育到成虫的存活率以在甘蓝上的最高 ,为 68.5 5 % ,黄瓜上的最低 ,为46.2 8% ;发育时间以在茄子上最短 ,为 1 7.5 d,黄瓜上最长 ,为 1 9.3d,差异显著 ;平均单雌产卵量以在甘蓝上最大 ,为 1 43粒 ,黄瓜上最小 ,为 98.2 5粒 ;成虫的寿命以在甘蓝上最长 ,平均为 2 5 .2 d,黄瓜上为 1 7.2 d;内禀增长率 rm以在茄子上的最大 ,为 0 .1 41 6,黄瓜上最小 ,为 0 .1 1 43。综合比较 4种不同寄主植物 ,茄子是烟粉虱种群生长发育和繁殖最适宜的寄主

Effect of host plants on the development and reproduction of Bemisia tabaci (Homoptera: Aleyrodidae)

The development, survivorship and reproduction of B. tabaci B\|biotype on 4 commercially grown vegetables were studied in laboratory. The total survivals from egg to adult on collard ( Brassica oleraceal var. acephala L.), eggplant ( Solanum melongena L.), tomato ( Lycospersicum esculentum Mill.) and cucumber ( Cucumis sativas L.) were 68 55%, 66 75%, 54 61% and 46 28%, respectively. The developmental periods from egg to adult varied from 17 5 days on eggplant to 19 3 days on cucumber. The average longevity of adult females ranged from 25 2 days on collard to 17 2 days on cucumber, while the ovipositon of B.tabaci varied from 143 eggs on collard to 98\^25 eggs on cucumber. The intrinsic rates of natural increase ( r m ) for B.tabaci on eggplant was the highest. According to the parameters mentioned before, eggplant was the most suitable host plant for B.tabaci in this studyt.