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中文摘要：
首次对烟粉虱的寄生蜂海氏桨角蚜小蜂Eretmocerus hayati（Zolnerowich＆Rose）和浅黄恩蚜小蜂Encarsia sophia（Girault＆Dodd）的雌性生殖系统结构进行了研究。两种小蜂的卵巢均由6条卵巢管构成,雌蜂羽化后卵巢内有部分成熟卵,而羽化后24 h的成熟卵量较羽化后6 h有所增加,两种寄生蜂均是同步卵（synovigenic）类寄生蜂;海氏桨角蚜小蜂羽化6 h和24 h后体内成熟卵的数量均显著高于浅黄恩蚜小蜂,这与海氏桨角蚜小蜂24 h雌蜂的寄生量显著高于浅黄恩蚜小蜂,而寄主取食量却低于浅黄恩蚜小蜂的结果一致。
英文摘要：
Reproductive organ structures of Eretmocerus hayati （Zolnerowich ＆ Rose） and Encarsia sophia （Girault ＆ Dodd）, parasitoids of Bemisia tabaci （Gennadius）, were described in this paper. Both parasitoid females have two ovaries, each consisting of three ovarioles. Mature ova could be observed in the ovaries of 6 h-old females and the number of mature ova increased in 24 h-old females, indicating that these two parasitoids were synovigenic parasitoids. Moreover, the number of mature ova in Er hayati was higher than that in En. sophia whether the female was 6 or 24 h-old. The results were coincident with what we found in oviposition experiment that the 24 h-old Er. hayati female parasitized more hosts than En. sophia, but fed less.
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Shifting preference between oviposition vs. host-feeding under changing host densities in two Apheli
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