Qiu B-L, De Barro P J, Ren S X
Department of Entomology, South China Agricultural University, Guangzhou, Guangdong, 510642, People's Republic of China.
Bull Entomol Res. 2005 Aug;95(4):313-9. doi: 10.1079/ber2005362.
The developmental, survivorship and reproductive biology of Eretmocerus sp. nr furuhashii Rose & Zolnerowich parasitizing Bemisia tabaci (Gennadius) biotype B on tomato, cucumber, eggplant and collard at 26+/-0.5 degrees C was studied. The mean longevity ranged from 6.5 days on tomato to 8.1 days on collard. The mean lifetime fecundities on tomato, cucumber, eggplant and collard were 35.4, 37.3, 41.4 and 46.4 eggs, whereas the mean lifetime fertility was 20.2, 22.7, 28.3 and 33.6 offspring, respectively. Developmental time was longest on cucumber (17.1 days) and shortest on collard (15.9 days). Survival rates varied significantly across host plants. Sex ratio (female symbol:male symbol) varied from 1.71 to 1.93 across the four hosts. The intrinsic rate of increase (rm) was highest (0.157) on collard and lowest on tomato (0.133). Mean generation time (R0) ranged from 14.7 to 20.9 days. All the data demonstrated that the reproductive success and overall performance of E. sp. nr furuhashii increased as the density of leaf hairs declined. As leaf hairs play a key role in determining efficacy, it is unlikely that effective biological control of B. tabaci using E. sp. nr furuhashii will be achieved on non-glabrous crop varieties.
研究了寄生在番茄、黄瓜、茄子和羽衣甘蓝上的烟粉虱B型烟粉虱（Gennadius）上的弗氏埃氏蚜小蜂（Eretmocerus sp. nr furuhashii Rose & Zolnerowich）的发育、存活和生殖生物学。平均寿命从番茄上的6.5天到羽衣甘蓝上的8.1天不等。在番茄、黄瓜、茄子和羽衣甘蓝上的平均终生繁殖力分别为35.4、37.3、41.4和46.4粒卵，而平均终生繁殖后代数分别为20.2、22.7、28.3和33.6只。发育时间在黄瓜上最长（17.1天），在羽衣甘蓝上最短（15.9天）。寄主植物间的存活率差异显著。四个寄主上的性别比（♀:♂）从1.71到1.93不等。内禀增长率（rm）在羽衣甘蓝上最高（0.157），在番茄上最低（0.133）。平均世代时间（R0）从14.7天到20.9天不等。所有数据表明，随着叶毛密度的降低，弗氏埃氏蚜小蜂的繁殖成功率和整体表现有所提高。由于叶毛在决定防治效果方面起关键作用，因此在非无毛作物品种上使用弗氏埃氏蚜小蜂对烟粉虱进行有效的生物防治不太可能实现。
