Daniel B. Warnell School of Forestry and Natural Resources, The University of Georgia, Athens, GA 30602, USA.
J Econ Entomol. 2010 Aug;103(4):1187-95. doi: 10.1603/ec10026.
In 2007, we surveyed the alien and endemic scolytine (bark and ambrosia beetles) fauna of northeastern Ohio, and for the most abundant species, we characterized their seasonal activity and response to three semiochemical baits. In total ,5,339 scolytine beetles represented by 47 species and 29 genera were caught in Lindgren funnel traps. Three species constituted 57% of the total catch, including Xylosandrus germanus (Blandford), Tomicus piniperda (L.), and Dryocoetes autographus (Ratzeburg). Of the total captured, 32% of the species and approximately 60% of the individuals were exotic, suggesting that exotic species numerically dominate the scolytine fauna in some urban areas. More native and exotic species were caught in traps baited with ethanol alone than in traps baited with other lures. However, significantly more individuals, especially of T. piniperda, D. autographus, Gnathotrichus materiarius (Fitch), and Ips grandicollis (Eichhoff), and species were caught in traps baited with ethanol plus alpha-pinene than in traps baited with ethanol alone or the exotic Ips lure. This suggests that among these baits, the ethanol plus alpha-pinene baits may be useful in maximizing scolytine beetle catches of these species within this region. Species diversity and richness for both native and exotic beetles was greatest in traps baited with ethanol alone. The period of peak trap capture varied depending upon species: X. germanus was most abundant in traps in mid-May and early-August; T. piniperda in mid-May; D. autographus in early June, mid-July, and mid-September; Anisandrus sayi Hopkins and G. materiarius in mid-May, mid-July, and early September; and I. grandicollis in early April, mid-July, and late September.
2007 年，我们调查了俄亥俄州东北部的外来和特有小蠹（树皮和虫瘿小蠹）区系，对于最丰富的物种，我们描述了它们的季节性活动和对三种半化学引诱剂的反应。总共使用 Lindgren 漏斗陷阱捕获了 5339 只小蠹，代表 47 个物种和 29 个属。有 3 个物种构成了总捕获量的 57%，包括 Xylosandrus germanus (Blandford)、Tomicus piniperda (L.) 和 Dryocoetes autographus (Ratzeburg)。在总捕获量中，有 32%的物种和大约 60%的个体是外来种，这表明在一些城市地区，外来种在数量上占据了小蠹区系的主导地位。单独用乙醇诱饵捕获的物种和个体分别占总捕获量的 32%和 60%左右，而用其他引诱剂捕获的物种和个体则较少。然而，单独用乙醇诱饵捕获的个体，尤其是 T. piniperda、D. autographus、Gnathotrichus materiarius (Fitch) 和 Ips grandicollis (Eichhoff) 以及更多的物种，都在乙醇加α-蒎烯诱饵的陷阱中捕获到，而在单独用乙醇或外来 Ips 诱饵的陷阱中捕获到的则较少。这表明，在这些诱饵中，乙醇加α-蒎烯诱饵可能有助于最大限度地提高该地区这些物种的小蠹捕获量。无论是本地还是外来的小蠹，单独用乙醇诱饵捕获的物种多样性和丰富度最大。根据物种的不同，高峰捕捉期也不同：X. germanus 在 5 月中旬和 8 月初的陷阱中最为丰富；T. piniperda 在 5 月中旬；D. autographus 在 6 月初、7 月中旬和 9 月中旬；Anisandrus sayi Hopkins 和 G. materiarius 在 5 月中旬、7 月中旬和 9 月初；I. grandicollis 在 4 月初、7 月中旬和 9 月底。
