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首页> 外文期刊>Journal of Economic Entomology >Movement of Xylosandrus germanus (Coleoptera: Curculionidae) in Ornamental Nurseries and Surrounding Habitats
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Movement of Xylosandrus germanus (Coleoptera: Curculionidae) in Ornamental Nurseries and Surrounding Habitats

机译：德国木糖虫（鞘翅目：Curculionidae）在观赏苗圃和周围生境中的运动

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摘要

Some exotic ambrosia beetles are damaging pests in ornamental nurseries. Xylosandrus germanus (Blandford) is the most problematic ambrosia beetle in Ohio nurseries. Movement of X. germanus in nurseries has not been characterized, and knowledge is lacking on whether infestations originate from within nurseries or surrounding habitats. Flight activity of X. germanus was monitored in nurseries and adjacent wooded areas to determine the source of beetles infesting nurseries, and characterize their movement within nurseries. Ethanol-baited bottle traps were positioned within wooded areas adjacent to commercial nurseries and within nurseries at various distances from the nursery woodlot interface. Flight activity of overwintered X. germanus occurred in wooded areas adjacent to nurseries before occurrence within nurseries. There was a direct relationship between degree-days and the distance from woodlots when X. germanus were first found in traps in spring, with earlier captures closest to wooded areas and latest ones furthest away into the nursery. X. germanus appeared to move into nurseries from adjacent wooded areas, with numbers trapped within nurseries decreasing with distance away from wooded areas. Trees in the interior of nurseries would appear to be subjected to less attack pressure than trees near the nursery border. Intercepting beetles as they move into nurseries might be an effective strategy to reduce attack pressure on valuable trees.
机译：一些外来的甲虫正在破坏观赏苗圃中的害虫。 Xylosandrus germanus（Blandford）是俄亥俄州苗圃中最成问题的甲虫。托儿所中德国小球藻的运动尚未鉴定出来，也缺乏关于侵染是否起源于托儿所内部或周围栖息地的知识。在苗圃和邻近的林区中监测了德国X.的飞行活动，以确定甲虫侵染苗圃的来源，并表征它们在苗圃内的移动。装有乙醇的诱饵瓶式诱集器位于与商业苗圃相邻的林地内，以及与苗圃林地界面相距不同距离的苗圃内。越冬X.germanus的飞行活动发生在邻近苗圃的林区，然后在苗圃内发生。春季在陷阱中首次发现德国志贺菌时，度数天数与离林地的距离之间存在直接关系，早期的捕获物最接近林区，而最近的捕获物最远进入苗圃。 X. germanus似乎是从相邻的林区移入苗圃，而被困在苗圃中的数量随距林区的距离而减少。与苗圃边界附近的树木相比，苗圃内部的树木受到的攻击压力似乎较小。在甲虫进入苗圃时拦截它们可能是减轻对珍贵树木的攻击压力的有效策略。

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