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Species Diversity and Assemblages of Cerambycidae in the Aftermath of the Emerald Ash Borer (Coleoptera: Buptrestidae) Invasion in Riparian Forests of Southern Michigan
Environmental Entomology ( IF 1.7 ) Pub Date : 2020-02-28 , DOI: 10.1093/ee/nvaa013
Patrick J Engelken 1 , Deborah G McCullough 1, 2
Affiliation  

Abstract Extensive ash (Fraxinus spp.) mortality has been reported across much of the area in eastern North America invaded by emerald ash borer (Agrilus planipennis Fairmaire), but indirect effects of emerald ash borer invasion on native forest insects are not well-studied. We assessed cerambycid beetle (Coleoptera: Cerambycidae) species captured in baited cross-vane panel traps during the 2017 and 2018 growing seasons.Traps were placed in 12 riparian forest sites distributed across three watersheds selected to represent the temporal gradient of the emerald ash borer invasion from southeastern to southwestern Michigan. Although ash species originally dominated overstory vegetation in all sites, >85% of ash basal area has been killed by emerald ash borer. We captured a total of 3,645 beetles representing 65 species and five subfamilies. Species assemblages in southeast sites, with the longest history of emerald ash borer invasion, differed from those in south central and southwest Michigan, which were similar. These differences were largely due to three species, which accounted for >60% of beetle captures in southeast Michigan. Associations among site-related variables and beetle captures indicated cerambycid species assemblages were associated most strongly with abundance and decay stage of coarse woody debris. During both years, >90% of cerambycid species were captured by mid-summer but seasonal activity differed among and within tribes. Numbers of beetles captured by canopy and ground traps were similar but species richness was higher in canopy traps than ground traps. Results suggest inputs of emerald ash borer-killed ash can have temporally lagged, secondary effects on cerambycid communities.

中文翻译:

翡翠灰螟(鞘翅目: Buptrestidae)入侵密歇根州南部河岸森林后天牛科的物种多样性和组合

摘要 在北美东部被翡翠螟(Agrilus planipennis Fairmaire)入侵的大部分​​地区,已经报道了广泛的灰烬(水曲柳属)死亡率,但尚未对翡翠灰螟入侵对原生森林昆虫的间接影响进行深入研究。我们评估了在 2017 年和 2018 年生长季节期间在带饵的交叉叶片面板陷阱中捕获的天牛甲虫(鞘翅目:天牛科)物种。 陷阱被放置在分布在三个流域的 12 个河岸森林地点,这些地点被选为代表翡翠灰螟入侵的时间梯度从密歇根州东南部到西南部。尽管灰烬物种最初在所有地点的上层植被中占主导地位,但超过 85% 的灰烬基底区域已被祖母绿灰螟杀死。我们共捕获了代表 65 个物种和 5 个亚科的 3,645 只甲虫。祖母绿灰螟入侵历史最长的东南地区的物种组合与密歇根州中南部和西南部的物种组合不同,两者相似。这些差异主要是由于三个物种造成的,它们占密歇根州东南部甲虫捕获量的 60% 以上。与场地相关的变量和甲虫捕获之间的关联表明天牛菌物种组合与粗木本碎片的丰度和衰变阶段的相关性最强。在这两年中,> 90% 的天牛物种在仲夏之前被捕获,但部落之间和部落内部的季节性活动有所不同。冠层陷阱和地面陷阱捕获的甲虫数量相似,但冠层陷阱的物种丰富度高于地面陷阱。结果表明,翡翠灰蛀虫杀死的灰烬的输入可能会在时间上滞后,
更新日期:2020-02-28
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