Ecology and management of emerging forest pest complexes

新兴森林害虫复合体的生态学和管理

• 批准号: 355311-2008
• 负责人: Erbilgin, Nadir
• 金额: $ 1.31万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2012
• 资助国家: 加拿大
• 起止时间: 2012-01-01 至 2013-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=497510
• 关键词: Ecology; management; emerging; forest; pest

Bark beetles are some of the most important pests of temperate forests. As the mountain pine beetle (MPB) has spread from British Columbia into Alberta, there is possibility that it will invade to the jack pine (JP) forest in western Canada. The probability of this invasion has increased as global climate changes is expected to promote warmer winter temperatures in northerly latitudes and higher elevations. If MPB successfully invades and survives in JP forest, it may spread across Canada and cause serious ecological and economical problems throughout the boreal forests. As a Canada Research Chair in Forest Entomology, in my research program, I will use MPB as a model system to study an insect invasion into a new ecosystem. Such investigations are timely because potential MPB invasion of JP forest could provide many new insights about insect invasion into a new habitat and host. The fundamental difference between the historical habitat of MPB and JP system is the presence of a serious defoliator, jack pine budworm (JPB), Choristoneura pinus pinus (Lep: Tortricidae), and absence of outbreak species of bark beetles in the JP system. In the proposed project, my students and I will evaluate several aspects of JP-MPB-JPB interactions. We will focus on the interactions between fungi associated with MPB and JP because fungi are important on MPB survival and establishment. We will also investigate interactions between MPB and JPB because both species will likely to interact on the same tree, although MPB will occur on stem and JPB will occur on foliage. Plant chemical defenses will be evaluated as possible mechanisms that influence the outcome of MPB-JP-JPB interactions because chemical defenses are important mechanisms for conifers against herbivores and fungi. Developing deeper understandings of how MPB invasion would affect the JP forest system will be important contribution of this project. Such understanding is important to elucidate the general structure and behavior of the JP system against MPB and will be critical for the development of the integrated pest management of MPB in the JP forest.

小蠹是温带森林中最重要的害虫之一。随着山地松甲虫（MPB）从不列颠哥伦比亚省向阿尔伯塔扩散，它有可能入侵加拿大西部的杰克松（JP）森林。这种入侵的可能性增加了，因为全球气候变化预计将促进北纬度和高海拔地区冬季气温的升高。如果MPB在JP森林中成功入侵并存活，它可能会蔓延到整个加拿大，并在整个北方森林中造成严重的生态和经济问题。作为加拿大森林昆虫学研究主席，在我的研究计划中，我将使用MPB作为模型系统来研究昆虫入侵新的生态系统。这些调查是及时的，因为潜在的MPB入侵JP森林可以提供许多新的见解昆虫入侵到一个新的栖息地和主机。MPB和JP系统的历史栖息地之间的根本区别是存在严重的食叶者，杰克松芽虫（JPB），Choristoneura pinus pinus（Lep：Tortricidae），而JP系统中没有小蠹的爆发种。在提议的项目中，我和我的学生将评估JP-MPB-JPB互动的几个方面。我们将重点关注与MPB和JP相关的真菌之间的相互作用，因为真菌对MPB的生存和建立很重要。我们还将调查MPB和JPB之间的相互作用，因为这两个物种可能会在同一棵树上相互作用，尽管MPB将发生在茎上，JPB将发生在叶子上。植物化学防御将被评估为可能的机制，影响MPB-JP-JPB相互作用的结果，因为化学防御是针叶树对植食动物和真菌的重要机制。深入了解MPB入侵将如何影响JP森林系统将是本项目的重要贡献。这样的理解是重要的，以阐明的一般结构和行为的JP系统对MPB，并将是关键的综合管理MPB在JP森林的发展。