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首页> 外文期刊>Journal of Economic Entomology >Survivorship of Z-Pheromone Race European Corn Borer (Lepidoptera: Crambidae) on a Range of Host Plants Varying in Defensive Chemistry
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Survivorship of Z-Pheromone Race European Corn Borer (Lepidoptera: Crambidae) on a Range of Host Plants Varying in Defensive Chemistry

机译：Z-Pheroomone种族欧洲玉米螟（Lepidoptera：Crambidae）的救生在防御化学中不同的宿主植物

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The European corn borer, Ostrinia nubilalis (Hubner), was introduced in North America in the early 1900s and became a major pest of corn. After its introduction, it was found on> 200 other plant hosts, but corn remained its primary host. Early life history studies indicated that European corn borer had the potential of a wide host range. For nearly 80 yr before the introduction of Bt corn, the European corn borer was a major pest of corn in North America. This study investigated the growth and survivorship of the Z-pheromone race European corn borer on a range of hosts that vary in defensive chemistries and historic degree of infestation to better understand the current host plant range of Z-pheromone race of O. nubilalis. The plants tested include sweet corn, cry1F Bt field corn, non-Bt corn, cucumber, tomato, and green bean. Experiments were conducted in the growth chamber, greenhouse, and field to determine survival under different conditions. In most cases, results supported the expected outcome, with significantly higher survival on non-Bt corn hosts than the other hosts tested. Neonate larvae fed exclusively on leaves of green bean exhibited intermediate survival, whereas third-instars fed on only leaves of cucumber survived intermediately. Larvae on Bt corn and tomato had comparable low survival rates, overall suggesting that the defensive features of tomato are about as effective as Cry1F Bt corn. Non-Bt corn was found to be themost suitable host plant, overall for European corn borer among those tested.
机译：欧洲玉米螟Ostrinia nubilalis（Hubner）于20世纪初引入北美，成为玉米的主要害虫。引入后，它在200多个其他植物宿主上被发现，但玉米仍然是它的主要宿主。早期生活史研究表明，欧洲玉米螟具有广泛寄主范围的潜力。在引进Bt玉米之前的近80年里，欧洲玉米螟是北美玉米的主要害虫。本研究调查了Z-信息素小种欧洲玉米螟在一系列寄主上的生长和存活情况，这些寄主在防御化学成分和历史侵染程度上各不相同，以便更好地了解O.nubilalis Z-信息素小种的当前寄主植物范围。测试的植物包括甜玉米、cry1F Bt玉米、非Bt玉米、黄瓜、番茄和绿豆。实验在生长室、温室和田间进行，以确定在不同条件下的存活率。在大多数情况下，结果支持预期结果，在非Bt玉米寄主上的存活率显著高于其他受试寄主。仅以绿豆叶为食的新生幼虫表现出中等存活率，而仅以黄瓜叶为食的三龄幼虫表现出中等存活率。Bt玉米和番茄上的幼虫存活率相当低，总体而言，这表明番茄的防御功能与Cry1F Bt玉米一样有效。非Bt玉米被发现是最适合欧洲玉米螟的寄主植物。

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