The cotton bollworm endoparasitoid Campoletis chlorideae is attracted by cis-jasmone or cis-3-hexenyl acetate but not by their mixtures
The cotton bollworm endoparasitoid Campoletis chlorideae is attracted by cis-jasmone or cis-3-hexenyl acetate but not by their mixtures
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DOI：
10.1007/s11829-019-09738-4
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发表时间：
2020-01
影响因子：
1.6
通讯作者：
Ya-Lan Sun;Jun-feng Dong;Ling-Qiao Huang;Chenzhu Wang
中科院分区：
文献类型：
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作者：
Ya-Lan Sun;Jun-feng Dong;Ling-Qiao Huang;Chenzhu Wang
棉铃虫Campoletis clorideaeUchida(膜翅目：姬蜂科)是棉铃虫Helicoverpa armigera(Hübner)的一种重要的幼虫内寄生蜂。更好地理解食草动物诱导的植物挥发物。氯离子定位寄主将有助于这种臭名昭著的作物害虫的生物防治。在这项研究中，我们首先研究了FC的电生理和行为反应。被草食动物侵染的植物排放的19种挥发性化合物。11种气味物质可诱导EAG对FC的反应。在Y形管嗅觉仪测定中，只有顺式茉莉酮和顺式-3-己烯基乙酸酯两种化合物对寄生蜂有引诱作用。接下来，我们在笼子环境中使用二选一和四选一的测试来调查h的寄生率。Amigeralarvae by C.用不同剂量的顺式茉莉酮、顺式-3-己烯基乙酸酯及其混合物处理氯离子烟草植株。结果表明，棉铃虫的寄生率较高。在顺式茉莉酮或3-己烯基乙酸酯处理的植株上，棉铃虫的抑制率显著提高，两种化合物的最佳剂量均为1 mg。而顺式茉莉酮和顺式-3-己烯基乙酸乙酯的混合物不增加H。棉铃虫寄生率由C.氯离子含量与对照组比较。结果表明，单一化合物顺式茉莉酮和顺式-3-己烯基乙酸酯在一定剂量下可提高寄生效率。但它们的混合物抵消了这种作用。这些结果将有助于我们对FC的开发利用。作为生防剂的氯离子可减少白蛾的种群数量。棉铃虫。
Campoletis chlorideaeUchida (Hymenoptera: Ichneumonidae) is an important larval endoparasitoid of the cotton bollwormHelicoverpa armigera(Hübner). A better understanding of herbivore-induced plant volatiles (HIPVs) employed byC. chlorideaeto locate hosts will contribute towards the biological control of this notorious crop pest. In this study, we first investigated the electrophysiological and behavioral responses ofC. chlorideaeto 19 volatile compounds emitted by herbivore-infested plants. Eleven odorants induced EAG responses ofC. chlorideae, while only two compounds,cis-jasmone andcis-3-hexenyl acetate, were attractive to the parasitoid in Y-tube olfactometer assays. Next, we used two- and four-choice tests in cage settings to investigate the parasitism rate ofH. armigeralarvae byC. chlorideaeon tobacco plants treated with different doses ofcis-jasmone,cis-3-hexenyl acetate, and their mixtures. Results showed that the parasitism rate ofH. armigerawas significantly higher on the plants treated withcis-jasmone orcis-3-hexenyl acetate, and their optimal dose for both compounds was 1 mg. However, the mixtures ofcis-jasmone andcis-3-hexenyl acetate did not increaseH. armigeraparasitism rate byC. chlorideaewhen compared with control groups. Our results indicate that the single compoundscis-jasmone andcis-3-hexenyl acetate, at certain doses, enhance parasitic efficiency ofC. chlorideae, but their mixtures negate this effect. These results will help us in the exploitation ofC. chlorideaeas biological control agent to reduce the populations ofH. armigera.