Correlation between numbers captured and infestation levels of the Coffee Berry-borer, Hypothenemus hampei: A preliminary basis for an action threshold using baited traps
Correlation between numbers captured and infestation levels of the Coffee Berry-borer, Hypothenemus hampei: A preliminary basis for an action threshold using baited traps
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DOI：
10.1080/09670874.2012.676219
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发表时间：
2012-01-01
影响因子：
1.5
通讯作者：
Franca, Christiane F. M.
中科院分区：
文献类型：
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作者：
Pereira, Adriano E.;Vilela, Evaldo F.;Franca, Christiane F. M.
目前用于确定咖啡浆果蛀虫 (CBB) 控制措施的采样技术非常耗时，并且种植者只有很小的机会选择其他选项。 2005 年至 2007 年间，在四个咖啡田中使用 IAPAR (R) 诱捕器进行了实验，诱捕器以乙醇和甲醇（1:3 比例）以及 1% 体积的苯甲醛为饵料，以测试捕获的成虫数量与 CBB 侵染水平之间的相关性，并确定行动阈值水平。在本研究中，每个实验区域使用的密度为 20 个陷阱/公顷。每两周记录一次捕获的 CBB 数量和咖啡浆果的侵染水平。在诱捕器捕获量与田间 CBB 侵染水平之间观察到显着相关性。这种相关性使我们能够使用陷阱作为采样方法来确定操作阈值。在 3 月至 7 月果实成熟期间，所有四个田地的陷阱捕获量都非常低，而在 8 月，当 CBB 从植物上或地面上残留的干浆果中出现时，陷阱捕获量急剧增加。
Sampling techniques currently used to determine control measures for the Coffee Berry-borer (CBB) are time-consuming and allow the grower only a small window of opportunity to select other options. Experiments were conducted in four coffee fields between 2005 and 2007 using IAPAR (R) traps that were baited with ethanol and methanol (1 : 3 ratio) and benzaldehyde at 1% volume, to test for a correlation between the number of captured adults and infestation levels of CBB, and to determine the action threshold level. For this study, a density 20 traps/ha was used in each experimental area. The number of CBBs captured and infestation level on coffee berries were recorded every 2 weeks. Significant correlation was observed between the trap capture and the infestation level of the CBB in the field. This correlation can enable us to determine action thresholds using traps as sampling methods. Trap catch was very low in all four fields during fruit maturation between March and July, and it increased sharply in August when the CBB emerged from the dry berries that remained on the plants or on the ground.