煙蚜重寄生蜂—蚜蟲寬緣金小蜂的行為學(xué)特性初步研究
Behaviors of Pachyneuron aphidis－Hyperparasitoid of Myzus persicae
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摘要: 蚜蟲寬緣金小蜂為煙蚜繭蜂的體外寄生蜂。成蜂羽化的當(dāng)天即可交尾產(chǎn)卵,，雄蜂可多次交尾,，雌蜂只交尾1次。未交尾的雌蜂進(jìn)行產(chǎn)雄孤雌生殖,。成蜂只在白天羽化,，羽化高峰期為7：00～10：00，占羽化總數(shù)的63.6%,。蚜蟲寬緣金小蜂對(duì)煙蚜繭蜂的蟲態(tài)具有選擇寄生性,，對(duì)老熟幼蟲的選擇性最強(qiáng)，相對(duì)寄生率最高,，為66.8%,。其次是預(yù)蛹期，相對(duì)寄生率為29.4%,。成蜂具有趨光性,、向上性和假死性，以寄主體液,、蚜蟲分泌的蜜露或花蜜為食物補(bǔ)充營養(yǎng)時(shí),，壽命可大大延長。Abstract: Pachyneuron aphidis was ectoparasites of Aphidius gufiensis. The female adults of Pachyneuron aphidis could mate and oviposite in 24 hours after emergence. The male adults could mate for several times, whereas the females could mate only once. The unmated females could only produce male progeny by parthenogenesis. The adults emerged only in the daytime, with the peak emergence at 7:00～10:00 AM, accounting for 63.6% of the total. Pachyneuron aphidis had preference for various stages of Aphidius gifuensis, with the highest parasitic rate in the old larva, reaching 66.8%, followed by pupa, reaching 29.4%. The adults had the phototropism, upward and thanatosis habit. Feeding on hemolymph of host, aphid honeydew and floral honey, the adults could live longer.
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