【摘要】 本文用柞蚕卵作室内繁殖松毛虫赤眼蜂的代寄主进行有关影响该蜂性此因子测定。试验在雌蜂不同年龄、寄主卵量、和雌蜂密度等三方面进行。结果表明,一粒柞蚕卵被超过4头雌蜂寄生时,产卵量多,未能完成发育子代数亦增加,而羽化率低,子代雌蜂比例下降。说明过少的寄主卵,复寄生机会增多,成蜂性比受影响。更多还原

【Abstract】 This paper use eggs of Antheraea perayi to propagat Trichogramma dendrolimi in the laboratory and factors affecting paasitoid sex ratio were studied. Three factors: the age of female parasitoid density of the host, and density of the female parasitoid were studied. The results showed that when I host egg was parasitized by more than 4 female parasitoids, the quantity of eggs laid increases, and so are the number of undeveloped adult wasps. The emerging rate also decreases and the female sex ratio decreases. It showed that when there are more parasitoids and less host eggs, superparasitizatoin occured and adult wasp sex ratio is affected.更多还原