• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文学位 >Potential host use by the Mediterranean pine engraver on novel tree species.
【24h】

Potential host use by the Mediterranean pine engraver on novel tree species.

机译：地中海松木雕刻工对新型树种的潜在寄主使用。

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Introduced species have the potential to cause great environmental damage, but many species introduced to an area will not have a large impact. It is critical that we develop the ability to predict which species will become damaging invaders, and manage ecosystems to minimize the probability that introduced species could establish. I present research results on the potential of the Mediterranean pine engraver, Orthotomicus erosus (Wollaston), to utilize North American tree species as hosts. I confirm that several North American conifers, species of pine and spruce, are suitable for the development of O. erosus. I then investigate the host acceptance behaviors of adults in contact with the outer bark. I show that differences among species occur during boring into the outer bark, and that beetles bore into both suitable and unsuitable tree species. The behavior of beetles before they are in contact with the bark was investigated with an olfactometer; odors from several conifer species do not affect the behavior of adult beetles. I also test the feeding response of beetles to extracts of bark and phloem chemicals. Several extracts contain feeding incitant or stimulant compounds, but the presence of these compounds in various tree species is different than adult bark boring behavior on those species. Finally, I used the data from my previous experiments and the phylogenetic distance among tree species in an attempt to predict the response of O. erosus to a second set of tree species from independent validation experiments. Phylogenetic distance from species with known beetle responses was not a good predictor of beetle response to novel plants. This body of work shows that O. erosus may accept a larger set of trees than are suitable for reproduction. Furthermore, adult host acceptance behavior is not determined solely by gustatory stimuli. Detailed knowledge about the stimuli governing host acceptance behavior is needed to predict the acceptability of new tree species to the beetle. The presence of acceptable but developmentaly unsuitable plants may determine whether species such as O. erosus are able to establish in a new environment.
机译：引进的物种有可能造成巨大的环境破坏，但是引入该地区的许多物种不会产生太大的影响。至关重要的是，我们必须具有预测哪些物种将成为破坏性入侵者并管理生态系统的能力，以最大程度地减少引入物种可能建立的可能性。我介绍了有关地中海松雕刻机Orthotomicus erosus（Wollaston）利用北美树种作为寄主的潜力的研究结果。我确认了北美的几种针叶树（松树和云杉）都适合发展厄氏孤岛。然后，我调查了与外皮接触的成年人的寄主接受行为。我发现，在钻进外皮时会出现物种之间的差异，而甲虫会钻入合适和不合适的树种中。用嗅觉仪研究了甲虫与树皮接触之前的行为。几种针叶树种的气味不会影响成年甲虫的行为。我还测试了甲虫对树皮和韧皮部化学提取物的摄食反应。几种提取物含有进食刺激或刺激性化合物，但这些化合物在各种树种中的存在与成年树皮对这些树种的枯萎行为不同。最后，我使用先前实验的数据以及树木物种之间的系统发生距离，以尝试通过独立的验证实验来预测O. erosus对第二种树木物种的响应。与已知甲虫反应的物种之间的系统发育距离并不是甲虫对新型植物反应的良好预测指标。这项工作表明，O。erosus可能接受比适合繁殖的树木更大的树木。此外，成年宿主的接受行为并不仅由味觉刺激决定。需要有关控制寄主接受行为的刺激的详细知识，以预测新树种对甲虫的可接受性。可接受但发育不适合的植物的存在可能决定诸如O. erosus的物种是否能够在新环境中建立。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号