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首页> 外文期刊>Journal of Economic Entomology >Effects of chipping, grinding, and heat on survival of emerald ash borer, Agrilus planipennis (Coleoptera : Buprestidae), in chips
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Effects of chipping, grinding, and heat on survival of emerald ash borer, Agrilus planipennis (Coleoptera : Buprestidae), in chips

机译：切屑，打磨和加热对翡翠蛀虫Agrilus planipennis（Coleoptera：Buprestidae）切屑存活的影响

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摘要

The emerald ash borer, Agrilus planipennis Fairmaire (Coleoptera: Buprestidae), a phloem-feeding insect from Asia, was identified in 2002 as the cause of widespread ash (Fraxinus sp.) mortality in southeastern Michigan and Essex County, Ontario. Most larvae overwinter as nonfeeding prepupae in the outer sapwood or thick bark of large trees. In a series of studies, we evaluated effects of grinding, chipping, and heat treatment on survival of A. planipennis prepupae in ash material. Heavily infested ash bolts containing roughly 8,700 prepupae were processed by a horizontal grinder with either a 2.5- or 10-cm screen. There was no evidence of A. planipennis survival in chips processed with the 2.5-cm screen, but eight viable prepupae were recovered from chips processed with the 10-cm screen. We chiseled additional sentinel chips with prepupae from ash logs and buried 45 in each chip pile. In total, six prepupae in sentinel chips survived the winter, but we found no sign of adult A. planipennis emergence from the processed chips. Subsequently, we assessed prepupal survival in chips processed by a chipper or a horizontal grinder fit with 5-, 10-, or 12.7-cm screens. An estimated 1,565 A. planipennis prepupae were processed by each treatment. Chips from the chipper were shorter than chips from the grinder regardless of the screen size used. No live prepupae were found in chips produced by the chipper, but 21 viable prepupae were found in chips from the grinder. infested wood and bark chips chiseled from logs were held in ovens at 25,40, or 60 degrees C for 8,24, or 48 h. Prepupal survival was consistently higher in wood chips than bark chips at 40 degrees C, whereas no prepupae survived exposure to 60 degrees C for eight or more hours. In a second study, prepupae in wood chips were exposed to 40, 45, 50, 55, or 60 degrees C for 20 or 120 min. Some prepupae survived 20 min of exposure to all temperatures. No prepupae survived exposure to 60 degrees C for 120 min, but 17% survived exposure to 55 degrees C for 120 min, suggesting that some fraction of the population may survive internationally recognized phytosanitary standards (ISPM-15) for treatment of wood packing material.
机译：翡翠虫Agrilus planipennis Fairmaire（鞘翅目：Buprestidae）是一种来自亚洲的韧皮部食性昆虫，于2002年被确定为导致密歇根州东南部和安大略省埃塞克斯郡广泛分布的灰烬（Fraxinus sp。）死亡的原因。大部分幼虫越过越冬越过边材或大树的厚树皮作为未取食的幼虫。在一系列研究中，我们评估了粉煤灰材料中研磨，削片和热处理对A. planipennis prepupae存活的影响。用装有2.5厘米或10厘米筛网的卧式磨床对含有约8700个足p的重度灰烬螺栓进行处理。没有证据表明用2.5厘米筛网处理过的木片中存在扁平甲虫存活，但是从用10厘米筛网处理过的木片中回收了8种可行的pre。我们用灰烬原木凿制了带有前p的其他前哨木屑，并在每个木屑堆中埋入45个。总共有6个用前哨芯片切成的小鳞片在冬季幸存下来，但是我们没有发现加工后的芯片出现成年拟南芥的迹象。随后，我们评估了用削片机或配有5、10或12.7厘米筛网的卧式磨床加工的芯片中pu的存活率。每种处理方法估计处理了1,565个拟南芥。无论使用何种筛网尺寸，削片机产生的切屑都比研磨机产生的切屑短。在削片机生产的木片中没有发现活的拟真科，但在研磨机的木片中未发现21种可行的科。将由原木凿出的被侵染的木材和树皮屑在25,40或60摄氏度的烤箱中放置8,24或48小时。在40摄氏度下，木片中的果仁前存活率始终高于树皮碎片，而在60摄氏度下暴露8小时或更长时间，没有任何古生菌能够幸存。在第二项研究中，将木片中的前茎暴露于40、45、50、55或60摄氏度下20或120分钟。在所有温度下，一些足前科存活了20分钟。没有前置菌能够在60°C下暴露120分钟后存活，但是17％在55°C下暴露120分钟后存活，这表明一部分人口可能会幸免于国际公认的用于处理木质包装材料的植物检疫标准（ISPM-15）。

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