USDA Forest Service, Northeastern Area State and Private Forestry, 271 Mast Rd., Durham, NH 03824, USA.
J Econ Entomol. 2010 Jun;103(3):698-707. doi: 10.1603/ec09395.
Semiochemical-based exotic species surveys targeting forest Coleoptera have gradually expanded in North America and elsewhere. Determining how various factors affect trap catches and increase species richness in traps is important for maximizing the efficacy of survey efforts. Studies were conducted in southern Maine and New Hampshire by using ethanol and alpha-pinene as lures to determine the influence of trap type, lure placement and size, and habitat type on catches of Scolytinae and Cerambycidae in coniferous forests. Three trap types (canopy malaise, intercept panel, and multiple-funnel), three lure placements/sizes (standard placement, above trap, and enlarged), and two habitat types (margins of clearcuts and shelterwood) were tested in three experiments. The three trap types performed equally well in terms of average number of species captured, but the canopy malaise caught more unique species than the other traps. In most cases, traps with lures placed above traps caught fewer beetles than lures hanging from the side of traps or with an expanded surface area. Generally, more insects were captured in shelterwood treatments versus the margins of clearcuts.
基于半化学物质的外来物种调查已逐渐在北美和其他地区扩展，针对森林鞘翅目昆虫。确定各种因素如何影响陷阱捕获率并增加陷阱中的物种丰富度对于最大限度地提高调查效果非常重要。本研究在缅因州南部和新罕布什尔州进行，使用乙醇和α-蒎烯作为引诱剂，以确定陷阱类型、引诱物放置和大小以及生境类型对针叶林内小蠹科和天牛科昆虫捕获率的影响。在三个实验中测试了三种陷阱类型（树冠粘虫陷阱、拦截面板和多个漏斗）、三种引诱物放置/大小（标准放置、高于陷阱和扩大）和两种生境类型（皆伐林缘和疏林）。就捕获的平均物种数量而言，这三种陷阱类型的性能相当，但树冠粘虫陷阱比其他陷阱捕获了更多独特的物种。在大多数情况下，放置在高于陷阱的诱剂的陷阱捕获的甲虫比悬挂在陷阱侧面或具有更大表面积的诱剂的陷阱少。一般来说，在疏林处理中捕获的昆虫比皆伐林缘多。
