Effect of Bemisia tabaci honeydew and its carbohydrates on search time and parasitization of Encarsia bimaculata
Effect of Bemisia tabaci honeydew and its carbohydrates on search time and parasitization of Encarsia bimaculata
复制标题
烟粉虱蜜露及其碳水化合物对双斑叶蝉搜索时间和寄生的影响
DOI：
10.1111/j.1439-0418.2007.01165.x
复制
发表时间：
2007-12-01
影响因子：
1.9
通讯作者：
Qiu, B. L.
中科院分区：
文献类型：
--
作者：
Mandour, N. S.;Ren, S. X.;Qiu, B. L.
通过在培养皿中使用浸渍有烟粉虱（Bemisia tabaci (Gennadius)）蜜露或其碳水化合物成分的滤纸圆盘，对双斑恩蚜小蜂（Encarsia bimaculata Heraty et Polaszek）的搜索时间进行了检测和记录。我们的数据表明，双斑恩蚜小蜂利用蜜露作为一种接触利它素來定位其寄主。雌蜂对蜜露有数量上的反应，并且在处理区域的搜索时间增加。这种增加与所施用蜜露的量呈浓度依赖性，但从0.05克/毫升起趋于平稳。双斑恩蚜小蜂对蜜露的反应在施用后随时间增加而降低，并且在处理8天后显著降低。寄生蜂雌蜂也会被用葡萄糖、果糖、海藻酮糖和海藻糖处理过的区域所吸引；海藻糖在寄生蜂中引起的反应最高。然而，蔗糖和低浓度的松三糖没有引起显著影响。葡萄糖、蔗糖、果糖、海藻糖和海藻酮糖分别使寄生蜂雌蜂的寿命延长了8.4倍、8.1倍、6.3倍、6.1倍和4.2倍。然而，松三糖和0.15克/毫升的天然蜜露对寄生蜂的寿命没有影响。与对照组相比，只有在施用葡萄糖 + 果糖、海藻糖以及果糖 + 海藻糖的混合物时，蜜露糖类水溶液喷雾对双斑恩蚜小蜂从卵到成虫的存活率以及对烟粉虱的寄生率才有显著差异。
The search time of Encarsia bimaculata Heraty et Polaszek was examined and recorded by using filter paper discs in Petri dish arenas impregnated with Bemisia tabaci (Gennadius) honeydew or its component carbohydrates. Our data show that E. bimaculata used honeydew as a contact kairomone to locate its host. Females responded quantitatively to the honeydew and the search time in the treated patches increased. This increase was concentration-dependent with regard to the amount of honeydew applied, but it levelled off 0.05 g/ml onwards. The response of E. bimaculata to honeydew decreased with increasing time after application and was significantly reduced 8 days after treatment. The parasitoid females were also arrested in patches treated with glucose, fructose, trehalulose and trehalose; trehalose elicited the highest response in the parasitoids. However, sucrose and low concentrations of melezitose did not elicit a significant effect. Glucose, sucrose, fructose, trehalose and trehalulose increased the longevity of the parasitoid females by a factor of 8.4, 8.1, 6.3, 6.1 and 4.2, respectively. Melezitose and 0.15 g/ml natural honeydew, however, had no effect on parasitoid lifespan. The effects of aqueous spray of honeydew sugars on egg to adult survivorship and parasitization of B. tabaci by E. bimaculata significantly differed when compared with controls only in cases where mixtures of glucose + fructose and trehalose and fructose + trehalose were applied.