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为了解烟粉虱的寄生蜂海氏桨角蚜小蜂的特征、发生规律,观察了其新疆种群的形态特征,于2012年在田间比较了该寄生蜂在棉花、甜瓜、茄子和辣椒上与烟粉虱的时空动态。结果表明,在辣椒上海氏桨角蚜小蜂成虫发生期最早,7月5日始见成虫;在4种作物上海氏桨角蚜小蜂和烟粉虱成虫分别在茄子和甜瓜上的发生数量最多,单叶虫口数量最高分别为16.12和66.47头;除辣椒外,在其它作物上成蜂的发生期比烟粉虱成虫约晚20 d,而被寄生的烟粉虱若虫与未被寄生的若虫时空动态较吻合;烟粉虱和海氏桨角蚜小蜂在植株上的成虫数量均表现出明显的上部>中部>下部的分布特征。研究表明,与烟粉虱比较,海氏桨角蚜小蜂新疆种群的时空动态表现出明显的滞后性和跟随效应,且其可能对寄主植物有一定的选择性。
In order to understand the characteristics of Bemisia tabaci (Myzus persicae) in Bemisia tabaci (Gennadius) and their morphological characteristics, the morphological characteristics of their populations in Xinjiang were observed. In 2012, the parasitoid was compared in cotton, melon, eggplant and pepper Spatial and temporal dynamics of Bemisia tabaci (Gennadius). The results showed that adult adults of A. larvae were the earliest on the pepper, and adults were found on July 5; the number of adults of B. tabaci and B. tabaci on eggplant and melon on four crops The highest number of single-leaf insect population was 16.12 and 66.47, respectively. Except for pepper, the bees occurred on other crops about 20 d later than adults of Bemisia tabaci, while the parasitic B. tabaci nymphs and non-parasitic The spatial and temporal dynamics of nymphs were in good agreement with each other. The adult population of Bemisia tabaci (Gennadius) and Haematopus siphonantha (Bemisia tabaci) showed obvious distribution characteristics of upper> middle> lower. The results showed that compared with Bemisia tabaci, the spatio-temporal dynamics of A. nipponense Xinjiang population showed significant lag and follow-up effects, and it may have some selectivity to host plants.