Effects of reservoir dispenser height on efficacy of mating disruption of codling moth (Lepidoptera: Tortricidae) in apple.
Effects of reservoir dispenser height on efficacy of mating disruption of codling moth (Lepidoptera: Tortricidae) in apple.
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DOI：
10.1002/ps.2141
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发表时间：
2011-03
影响因子：
4.1
通讯作者：
D. Epstein;L. Stelinski;James R. Miller;M. Grieshop;L. Gut
中科院分区：
文献类型：
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作者：
D. Epstein;L. Stelinski;James R. Miller;M. Grieshop;L. Gut
背景研究了改变储液器分配器高度对苹果蠹蛾Cydia pomonella (L.)交配干扰的影响。目标是通过更好地了解树冠内成虫分布以及信息素分配器放置对破坏的影响，提高苹果蠹蛾交配破坏的有效性。每棵树在2m和4m处放置两个分配器和/或在树上的每个高度放置一个分配器，标签率为1000单位ha(-1)。监测陷阱和拴系雌蛾被部署在 2 和 4 m 高度的地块中，分别评估捕获或交配的治疗效果。结果 当所有分配器放置在 4 m 处时，捕获的雄蛾数量最少。当分配器同时放置在 2 和 4 m 处时，雌性交配率最低，并且在 2 和 4 m 处拴系的雌性之间的差异最小（28% 交配）。两个分配器距离为 4 m 时，交配率为 32%；两个分配器距离为 2 m 时，交配率为 38%；而在无干扰对照中，交配率为 46%。当雌性被拴在 2 m 处且分配器位于 4 m 处时（40%），以及当雌性被拴在 4 m 处且分配器位于 2 m 处时（46%），各处理中的交配率最高。结论 无论破坏分配器的位置如何，树中 4 m 处的陷阱比 2 m 处的陷阱捕获更多的雄蛾。当分配器同时放置在 2 m 和 4 m 处时，雌性交配率最低，这表明当前关于在树冠中放置储液器分配器的建议可能不是最佳的。
BACKGROUND The effect of varying the height of reservoir dispensers for mating disruption of codling moth, Cydia pomonella (L.), was investigated. The goal was to improve the effectiveness of C. pomonella mating disruption through improved understanding of adult distribution within the tree canopy and the impact of pheromone dispenser placement on disruption. Two dispensers per tree were placed at 2 m and 4 m and/or one dispenser at each height on the tree at a label rate of 1000 units ha(-1) . Monitoring traps and tethered female moths were deployed in plots at 2 and 4 m heights to assess treatment effects by catches or matings respectively. RESULTS Fewest male moths were captured with all dispensers placed at 4 m. Female mating was lowest, and with least variation between females tethered at 2 and 4 m, when dispensers were placed simultaneously at 2 and 4 m (28% mated). Mating was 32% with both dispensers at 4 m, 38% with both dispensers at 2 m and 46% in the no disruption control. Mating was highest across treatments when females were tethered at 2 m and dispensers placed at 4 m (40%), and when females were tethered at 4 m with dispensers placed at 2 m (46%). CONCLUSION Traps at 4 m in trees captured more male moths than traps at 2 m, regardless of disruption dispenser positioning. Female mating was lowest when dispensers were placed simultaneously at 2 and 4 m, suggesting that current recommendations for placement of reservoir dispensers in tree crowns may be suboptimal.