Department of Economic Entomology, Faculty of Agriculture, Alexandria University, Alexandria, Egypt.
J Econ Entomol. 2010 Oct;103(5):1621-7. doi: 10.1603/ec09435.
The leopard moth, Zeuzera pyrina (L.) (Lepidoptera: Cossidae), is a damaging pest for many fruit trees (e.g., apple [Malus spp.], pear [Pyrus spp.] peach [Prunus spp.], and olive [Olea]). Recently, it caused serious yield losses in newly established olive orchards in Egypt, including the death of young trees. Chemical and biological control have shown limited efficiency against this pest. Field tests were conducted in 2005 and 2006 to evaluate mating disruption (MD) for the control of the leopard moth, on heavily infested, densely planted olive plots (336 trees per ha). The binary blend of the pheromone components (E,Z)-2,13-octadecenyl acetate and (E,Z)-3,13-octadecenyl acetate (95:5) was dispensed from polyethylene vials. Efficacy was measured considering reduction of catches in pheromone traps, reduction of active galleries of leopard moth per tree and fruit yield in the pheromone-treated plots (MD) compared with control plots (CO). Male captures in MD plots were reduced by 89.3% in 2005 and 82.9% in 2006, during a trapping period of 14 and 13 wk, respectively. Application of MD over two consecutive years progressively reduced the number of active galleries per tree in the third year where no sex pheromone was applied. In all years, larval galleries outnumbered moth captures. Fruit yield from trees where sex pheromone had been applied in 2005 and 2006 increased significantly in 2006 (98.8 +/- 2.9 kg per tree) and 2007 (23 +/- 1.3 kg per tree) compared with control ones (61.0 +/- 3.9 and 10.0 +/- 0.6 kg per tree, respectively). Mating disruption shows promising for suppressing leopard moth infestation in olives.
豹纹木蠹蛾，Zeuzera pyrina（L.）（鳞翅目：木蠹蛾科），是许多果树（如苹果[Malus spp.]、梨[Pyrus spp.]、桃[Prunus spp.]和油橄榄[Olea]）的破坏性害虫。最近，它在埃及新建立的油橄榄果园中造成了严重的产量损失，包括幼树死亡。化学和生物防治对这种害虫的效果有限。2005 年和 2006 年在重度感染、密植的油橄榄种植园（每公顷 336 株）进行了田间试验，以评估交配干扰（MD）对豹纹木蠹蛾的控制效果。二元混合物的信息素成分（E,Z）-2,13-十八碳烯基乙酸酯和（E,Z）-3,13-十八碳烯基乙酸酯（95:5）从聚乙烯小瓶中分配。在 2005 年和 2006 年的诱捕期分别为 14 周和 13 周期间，通过比较诱捕器中的捕获量、每棵树中豹纹木蠹蛾的活动坑道数量以及处理过的诱捕器中的果实产量（MD）与对照（CO）来衡量效果。在 MD 处理的地块中，雄性捕获量在 2005 年和 2006 年分别减少了 89.3%和 82.9%。在两年连续应用 MD 的情况下，在第三年不再应用性信息素的情况下，每棵树的活动坑道数量逐渐减少。在所有年份中，幼虫坑道的数量都超过了蛾的捕获量。2005 年和 2006 年应用性信息素的树木的果实产量在 2006 年（每棵树 98.8 +/- 2.9 公斤）和 2007 年（每棵树 23 +/- 1.3 公斤）显著增加，而对照树木的产量分别为 61.0 +/- 3.9 和 10.0 +/- 0.6 公斤/树。交配干扰显示出在油橄榄中抑制豹纹木蠹蛾侵染的前景。
