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本文报道了赤眼蜂科(Trichogrammatidae)5种赤眼蜂(Trichogramma dendrol-imi,T.,japonicum,T.confusum,T.chilonis,和 T.ostriniae)在米蛾 Corcyracephalonica 卵以及 T.dendrolimi 在不同体积的寄主上产卵时的性控行为。观察结果表明,赤眼蜂雌蜂在产卵时,以不同的腹部运动分别产下雌性卵(受精卵)和雄性卵(未受精卵),具有对其子代的性别进行控制的能力。将观察估断的子代性别与实际羽化的仔蜂性别进行比较,估断正确率为94.20%,其中对雌性卵的估断正确率为95.48%;对雄性卵的为89.29%。赤眼蜂蜂种不同,雌蜂在产卵过程中各个行为阶段所持续的时间也不同,但在寄主相同时(如同为米蛾卵),这种差异并不明显。有些蜂种产雄性卵所花费的时间要比产雌性卵长(如 T.japonicum,T.confusum 和 T.chilonis);有些蜂种则相反(如 T.dendro-limi)。在对赤眼蜂雌蜂性控行为的观察中,我们还发现,未经交配过的赤眼蜂雌蜂(如 T.dendrolimi,T.confusum)在产卵时具有产雌性卵的腹部动作;而孤雌产雌的种类,如T.embryophayun,在产卵时的腹部动作中,不但具有产雌性卵的信号,而且尚有产雄性卵的信号。对此,本文进行了初步讨论,这些问题仍有待深入研究。
Trichogramma dendrol-imi (T., japonicum, T. confusum, T. chilonis, and T. ostriniae) was reported in the Trichogrammatidae eggs at different times and T.dendrolimi Sex-controlled behavior of spawning hosts on volume. The observation shows that during the spawning process, the female wasps of Trichogramma produce different amounts of female eggs (fertilized eggs) and male eggs (unfertilized eggs) with different abdomen motions, which has the ability to control the sex of their offspring. The estimated offspring sex and actual fecundity were compared, the correct rate was 94.20%. The correct rate of female eggs was 95.48% and that of male eggs was 89.29%. Trichogramma bee species different, female bees in the spawning process of the various stages of the duration of the duration is also different, but at the same host (as with rice moth eggs), this difference is not obvious. Some bees produce male eggs longer than females (eg, T. japonicum, T. confusum, and T. chilonis), and others have the opposite (eg, T. dendro-limi). In the observation of sex control behavior of Trichogramma drosophila, we also found that the unmated Trichogramma dorsalis (T. dendrolimi, T. confusum) had the abdominal action of producing female eggs when laying eggs; The parthenogenesis of female species, such as T.embryophayun, in the spawning during abdominal movements, not only has the signal of female eggs, but also has the signal of male eggs. In this regard, this article conducted a preliminary discussion, these issues still need further study.