Oviposition in Cryptolaemus montrouzieri stimulated by wax filaments of its prey
Oviposition in Cryptolaemus montrouzieri stimulated by wax filaments of its prey
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DOI：
10.1111/j.1570-7458.1996.tb00819.x
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发表时间：
1996-05
影响因子：
1.9
通讯作者：
J. Merlin;O. Lemaitre;J. Grégoire
中科院分区：
文献类型：
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作者：
J. Merlin;O. Lemaitre;J. Grégoire
实验室比较了 Cryptolaemus montrouzieri Mulsant（鞘翅目：瓢虫科）对软鳞绣球花（Steinweden）（同翅目：球虫科）和粉蚧柑橘平球菌（Risso）（同翅目：假球虫科）的产卵反应。在没有猎物产生的蜡丝（仅存在于绣球花的卵囊中，存在于柑橘 P. citri 的所有阶段中）的情况下，雌性会延迟产卵并将成熟的卵保留在其侧输卵管中。雌性在用口器探测蜡丝时感知到的接触化学信号是诱导寻找产卵位点的信号。第二步是在产卵器的控制下，雌性通过产卵器找到有限的地点产卵。这种产卵行为可能会对这种重要生物防治剂的猎物利用策略产生相当大的影响，并可能有助于理解其在猎物密度低的情况下明显无效的情况。
The oviposition responses of Cryptolaemus montrouzieri Mulsant (Coleoptera: Coccinellidae) to the soft scale Eupulvinaria hydrangeae (Steinweden) (Homoptera: Coccidae) and to the mealybug Planococcus citri (Risso) (Homoptera: Pseudococcidae) have been compared in the laboratory. The females delay oviposition and withhold mature eggs in their lateral oviducts in the absence of wax filaments produced by the prey (only present in the ovisac of E. hydrangeae, present in all stages of P. citri). Contact chemical cues perceived by females when probing the wax filaments with their mouthparts are the signals inducing the search for oviposition sites. The second step is under the control of the ovipositor by which females locate confined sites to lay eggs. This oviposition behaviour could have a considerable impact on the prey exploitation strategy of this important biocontrol agent and might help to understand its apparent ineffectiveness in situations of low prey density.