Coffee berry borer (Hypothenemus hampei) (Coleoptera: Curculionidae) development across an elevational gradient on Hawai'i Island: Applying laboratory degree-day predictions to natural field populations
Coffee berry borer (Hypothenemus hampei) (Coleoptera: Curculionidae) development across an elevational gradient on Hawai'i Island: Applying laboratory degree-day predictions to natural field populations
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DOI：
10.1371/journal.pone.0218321
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发表时间：
2019-07-17
期刊：
影响因子：
3.7
通讯作者：
Johnson, Melissa A.
中科院分区：
文献类型：
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作者：
Hamilton, Lindsey J.;Hollingsworth, Robert G.;Johnson, Melissa A.
咖啡小食心虫（Hypothenemus hampei，CBB）（鞘翅目：咖啡小食心虫科：小食心虫亚科）是世界范围内危害最严重的咖啡害虫。关于CBB发育时间的信息可用于预测咖啡生长季节早期新的侵扰周期的开始，从而告知杀虫剂应用的时间。虽然存在恒定条件下CBB发展的实验室估计，但它们尚未应用于许多咖啡种植区特有的异质环境条件下。我们测量了CBB的发展时间和丰富的商业咖啡农场在夏威夷岛的海拔梯度和应用热积累模型从以前的实验室研究，以测试其适合现场数据。人工诱饵被用来侵染咖啡浆果在五个农场，海拔范围从279-792米，和天气变量进行了监测，在宏观（农场级）和微观（分支级）尺度。CBB的发展，其次是在该领域从最初的浆果侵染的时间，通过F1成熟的成年人的发展的创始女性。所有地点从卵到成虫的平均发育时间为38.5 +/- 3.46天，而完成完整生命周期（从感染到出现成熟F1雌性）所需的平均时间为50.9 +/- 3.35天。发育时间随海拔升高和温度降低而增加。使用宏观温度数据和两个不同的估计较低的温度阈值（14.9摄氏度和13.9摄氏度），我们估计的平均需求332 +/- 14度-天和386 +/- 16度-天，分别从浆果侵染的时间开始一个新的生殖周期在成熟的咖啡浆果。使用微尺度温度数据获得了类似的估计，表明宏观尺度温度监测足以进行生命周期预测。我们还提出了一个模型，海拔每月CBB代数。我们的研究结果表明，CBB的发展时间从实验室研究一般适用于夏威夷岛的田间条件，并可以作为一个决策支持工具，以改善IPM策略，这一全球性的咖啡害虫。
Coffee berry borer (CBB, Hypothenemus hampei) (Coleoptera: Curculionidae: Scolytinae) is the most destructive pest of coffee worldwide. Information on CBB development times can be used to predict the initiation of new infestation cycles early in the coffee-growing season and thus inform the timing of insecticide applications. While laboratory estimates of CBB development under constant conditions exist, they have not been applied under the heterogeneous environmental conditions that characterize many coffee-growing regions. We measured CBB development times and abundance in commercial coffee farms across an elevational gradient on Hawai'i Island and applied thermal accumulation models from previous laboratory studies to test their fit to field data. Artificial lures were used to infest coffee berries at five farms ranging in elevation from 279-792 m, and weather variables were monitored at macro (farm-level) and micro (branch-level) scales. CBB development was followed in the field from the time of initial berry infestation by the founding female through the development of F1 mature adults. Mean development time from egg to adult across all sites was 38.5 +/- 3.46 days, while the mean time required for the completion of a full life cycle (from time of infestation to presence of mature F1 females) was 50.9 +/- 3.35 days. Development time increased with increasing elevation and decreasing temperature. Using macroscale temperature data and two different estimates for the lower temperature threshold (14.9 degrees C and 13.9 degrees C), we estimated a mean requirement of 332 +/- 14 degree-days and 386 +/- 16 degree-days, respectively, from the time of berry infestation to the initiation of a new reproductive cycle in mature coffee berries. Similar estimates were obtained using microscale temperature data, indicating that macro-scale temperature monitoring is sufficient for life-cycle prediction. We also present a model relating elevation to number of CBB generations per month. Our findings suggest that CBB development times from laboratory studies are generally applicable to field conditions on Hawai'i Island and can be used as a decision support tool to improve IPM strategies for this worldwide pest of coffee.