Influence of foraging behavior and host spatial distribution on the localized spread of the emerald ash borer, Agrilus planipennis
Influence of foraging behavior and host spatial distribution on the localized spread of the emerald ash borer, Agrilus planipennis
复制标题
觅食行为和寄主空间分布对白蜡螟局部扩散的影响
DOI：
10.1007/s10144-010-0233-6
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发表时间：
2011
影响因子：
1.7
通讯作者：
D. McCullough
中科院分区：
文献类型：
--
作者：
R. Mercader;N. Siegert;Andrew M. Liebhold;D. McCullough
入侵物种的管理计划通常是在区域或国家一级制定的，但物理干预通常发生在相对较小的地区，这些地区被新建立的孤立种群所占据。预测当地栖息地变化如何影响这种新发现种群的扩张的能力对于有效地瞄准资源以减缓入侵物种的传播至关重要。我们组装了一个耦合的地图格子模型，模拟当地传播的新成立的殖民地的翡翠灰钻（Agrilus planipennis Fairmaire），一个毁灭性的森林昆虫害虫的灰（白蜡树属）。树利用该模型，我们研究了A.在不同的环境中与白蜡树属植物的Planipennis。分布，并探讨产卵觅食行为对当地传播的影响。平翅类模拟结果表明，幼虫密度增加，导致较低的主机树密度或较高的初始人口规模，可以增加传播率在殖民化后的头几年，通过增加密度依赖的发展速度和通过主机资源枯竭。产卵觅食行为对径向扩散率和种群大小都有很大影响。已知的产卵行为有两种。planipennis女性，吸引高白蜡树密度和吸引力的树木，对传播有相反的影响。该模型的结果说明了资源分布和觅食行为对本地化传播的重要影响，以及在制定入侵害虫监测和管理策略时这些因素的重要性。
Management programs for invasive species are often developed at a regional or national level, but physical intervention generally takes place over relatively small areas occupied by newly founded, isolated populations. The ability to predict how local habitat variation affects the expansion of such newly founded populations is essential for efficiently targeting resources to slow the spread of an invasive species. We assembled a coupled map lattice model that simulates the local spread of newly founded colonies of the emerald ash borer (Agrilus planipennis Fairmaire), a devastating forest insect pest of ash (Fraxinus spp.) trees. Using this model, we investigated the spread of A. planipennis in environments with different Fraxinus spp. distributions, and explored the consequences of ovipositional foraging behavior on the local spread of A. planipennis. Simulations indicate that increased larval density, resulting from lower host tree density or higher initial population sizes, can increase the spread rate during the first few years after colonization by increasing a density-dependent developmental rate and via host resource depletion. Both the radial spread rate and population size were greatly influenced by ovipositional foraging behavior. Two known behaviors of ovipositing A. planipennis females, attraction towards areas with high ash tree density and attraction to stressed trees, had opposing effects on spread. Results from this model illustrate the significant influence of resource distribution and foraging behavior on localized spread, and the importance of these factors when formulating strategies to monitor and manage invasive pests.