斑翅食蚧蚜小蜂的生物学特性

斑翅食蚧蚜小蜂Coccophagus ceroplastae是橡副珠蜡蚧Parasaissetia nigra的重要内寄生蜂。对斑翅食蚧蚜小蜂的形态特征进行了描述,在实验室条件下观察了斑翅食蚧蚜小蜂的行为、发育、存活、繁殖等生物学特性。结果表明:斑翅食蚧蚜小蜂幼虫分3龄,完成一个世代需21-26d。卵巢左右成对,各由3条卵巢管组成,为发育成熟型,成虫期补充营养和发育时间对抱卵量的影响不明显。羽化后即可进行交配,交配时间2-3s,雄蜂有竞争交配行为,交配对雌蜂产卵有显著刺激作用。产卵行为有寻找、寄主检查、产卵器刺探、产卵、产卵针拔出等步骤,存在过寄生现象。羽化主要是在08:00-10:00,温度、相对湿度、光照对其羽化节律均有影响,温度升高羽化提前,且相对集中;相对湿度在20%-90%范围内,随湿度的升高成虫羽化高蜂延后;而光照时间过长或过短均可使斑翅食蚧蚜小蜂的羽化相对分散。随着温度的升高,雌成蜂的寿命逐渐缩短;补充营养能延长成虫寿命,取食10%蔗糖的寿命最长,清水和无补充营养寿命短。

The biological characteristics of Coccophagus ceroplastae

Coccophagus ceroplastae is an important parasitic wasp,endoparasitizing the 2nd and 3rd instar larva of Parasaissetia nigra.In this paper,the morphological characteristics of C.ceroplastae were described,and behaviors,development,survival,and reproduction of the wasp were also studied in the lab.The results showed that life cycle of C.ceroplastae lasted 21-26 days,including eggs,3 larva instars,prepupae,pupae and adults.Duration from eggs to pupae was 14-17d,and that of pupae was 7-9d.The reproductive syste...