光肩天牛(鞘翅目:天牛科)在林冠的分布及其对调查效果的影响。

IF 1.5 3区 农林科学 Q2 ENTOMOLOGY
Meredith S Bean, R Talbot Trotter, Robert Ritger, Kyle Barrett, Scott E Pfister, David R Coyle
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引用次数: 0

摘要

光肩天牛(Anoplophora glabripennis Motschulsky)是一种入侵北美和欧洲的伐木甲虫,威胁着广泛的树种。消灭甲虫是一个昂贵而耗时的过程,需要通过目视调查来检测甲虫对宿主树木的损害。了解甲虫在树木内的分布,可以通过将调查重点放在高风险地区直接有利于调查工作,也可以通过确定构成甲虫种群的生境因素间接有利于调查工作。在南卡罗莱纳的光肩蛙侵染中,我们在一个岛屿上发现了一个孤立的、活跃生长的亚种群,该亚种群尚未完全占据可用的寄主树。在寄主资源仍然丰富的情况下,产卵坑和出口孔的分布可能是生境偏好和(出口孔的情况下)幼虫表现的结果。我们通过对岛上33棵侵染和未侵染寄主树的14000个产卵点和14000个出口孔进行分类,记录了所有损害的茎高、直径、表面积和树皮厚度,研究了卵和新成虫的分布。产卵坑和出口孔在树冠层内的分布既不均匀也不随机;然而,有效生境(即冠层内的茎空间)的分布似乎驱动了大部分的分布,并且损害的存在偏向于较大/较高的树木。这些结果表明,在树冠高度、茎直径和树冠内树皮厚度方面,卵的放置有一定的偏好,但这些反应是微妙的,在指导视觉调查方面可能具有有限的效用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
Distribution of Anoplophora glabripennis (Coleoptera: Cerambycidae) damage in tree canopies: implications for survey efficacy.

Anoplophora glabripennis Motschulsky is an invasive woodboring beetle in North America and Europe that threatens a broad range of tree genera. Eradication is a costly and time-consuming process that requires visual surveys to detect beetle damage on host trees. Knowing the distribution of beetle damage within trees could directly benefit survey efforts by focusing surveys on high-risk areas and indirectly by identifying habitat factors that structure beetle populations. In the A. glabripennis infestation in South Carolina, we identified an isolated and actively growing subpopulation on an island that had not fully occupied the available host trees. With host resources still abundant for the beetle, the distribution of oviposition pits and exit holes is expected to be the result of habitat preference and (in the case of exit holes) larval performance. We examined the distribution of eggs and emerging adults by cataloging the >14,000 oviposition sites and >1,400 exit holes distributed among the 33 infested and uninfested host trees on the island, documenting the stem height, diameter, surface area, and bark thickness for all damage. Oviposition pits and exit holes were neither randomly nor evenly distributed within tree canopies; however, the distribution of available habitat (ie stem space within the canopy) seemed to drive most of the distribution, and the presence of damage was biased toward larger/taller trees. These results suggest some preference in egg placement with regard to canopy height, stem diameter, and bark thickness within canopies, but the responses are subtle and may have limited utility in guiding visual surveys.

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来源期刊
Environmental Entomology
Environmental Entomology 生物-昆虫学
CiteScore
3.90
自引率
5.90%
发文量
97
审稿时长
3-8 weeks
期刊介绍: Environmental Entomology is published bimonthly in February, April, June, August, October, and December. The journal publishes reports on the interaction of insects with the biological, chemical, and physical aspects of their environment. In addition to research papers, Environmental Entomology publishes Reviews, interpretive articles in a Forum section, and Letters to the Editor.
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