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Effects of Forest Type and Management on Native Wood Wasp Abundance (Hymenoptera: Siricidae) in Mississippi, United States

机译:森林类型和经营管理对美国密西西比州本地黄蜂丰富度(膜翅目:天蛾科)的影响

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The United States has a rich fauna of native Siricidae (wood wasps), but they are rarely studied because they have limited economic impact. In 2004, a non-native wood-boring pest, Sirex noctilio F., was found established in North America. Because S. noctilio is an economically important pest in pine plantations throughout the Southern Hemisphere, interest in the ecology of American native wood wasp populations has increased. A study was conducted during fall 2011 to investigate the effects of forest stand type and characteristics on native wood wasp abundance, and to describe their flight phenology in northeastern Mississippi. In total, 609 native wood wasps were captured, consisting of 608 Sirex nigricornis F. and one Urocerus cressoni Norton. There were significant treatment and location effects that influenced wood wasp abundance. The flight period of wood wasps captured in our study (October-December) was similar to studies in the southeastern United States, but differed from results in Minnesota and the northeastern United States (June-October).Woodwasp abundance was significantly correlated with higher basal area, smaller tree diameter at breast height, and shorter trees, all indicators of forest stand stress. It appears proper silvicultural management of pine plantations may reduce native wood wasp population abundance in the southeastern United States, as it does to S. noctilio in the Southern Hemisphere. We propose implementing management models used for the southern pine beetle to reduce stand hazard of future infestations of native and invasive wood wasps.
机译:美国有丰富的原生天牛科动物(木蜂),但由于对经济的影响有限,因此很少进行研究。 2004年,在北美发现了一种非本地的枯木害虫Sirex noctilio F.。由于夜蛾链球菌在整个南半球的松树种植园中是一种重要的经济害虫,因此人们对美国原木黄蜂种群生态学的兴趣增加了。 2011年秋季进行了一项研究,以调查林分类型和特征对本地木蜂丰富度的影响,并描述其在密西西比东北部的飞行物候。总共捕获了609个原生木蜂,其中包括608个Sirex nigricornis F.和1个Urocerus cressoni Norton。有明显的处理和定位效果影响了木蜂的丰度。我们的研究(10月至12月)中捕获的木蜂的飞行时间与美国东南部的研究相似,但与明尼苏达州和美国东北部(6月至10月)的研究结果不同。面积,在胸高处的树木直径较小,树木较短,这都是森林受压的所有指标。似乎对松树人工林进行适当的造林管理可能会降低美国东南部的天然黄蜂种群数量,就像对南半球的夜蛾S. noctilio一样。我们建议实施用于南方松树甲虫的管理模型,以减少未来对本地和侵入性木蜂的侵扰的林分危害。

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