Division of Plant and Soil Sciences, West Virginia University, Morgantown, WV 26506, USA.
J Econ Entomol. 2009 Dec;102(6):2026-32. doi: 10.1603/029.102.0602.
Japanese hornfaced bees Osmia cornifrons (Radoszkowski) (Hymenoptera: Megachilidae) are used for pollination of spring blooming fruit crops such as apple, pear, and blueberry. Because O. cornifrons has a short adult life span, synchronization of bee emergence with bloom is critical to maximize crop pollination. This study was conducted to determine lower temperature thresholds (LTDs), optimum temperatures, and required degree-day accumulation for emergence of O. cornifrons adults. Patterns of temperature-dependent emergence of O. cornifrons adults at seven temperatures (3.9, 12.0, 18.6, 26.6, 30.3, 35.6, and 42.5 degrees C) were modeled and simulated with linear and nonlinear regression analyses. Results of this study showed that required degree-days (DD) for emergence of male and female O. cornifrons adults were 125.2 DD, with LTD of 8.9 degrees C and 179.8 DD, with LTD of 8.6 degrees C, respectively. The optimum temperatures for emergence were 36.5, 30.2, and 35.7 degrees C for male, female, and both sexes combined, respectively. This study indicated that emergence of O. cornifrons adults could be manipulated to synchronize with pollination periods of target fruit crops.
日本角胸切叶蜂（Osmia cornifrons）（膜翅目：Megachilidae）被用于苹果、梨和蓝莓等春季开花的水果作物的授粉。由于 O. cornifrons 成虫的寿命较短，因此与花期同步的蜂群出蜂至关重要，以最大限度地提高作物授粉效果。本研究旨在确定日本角胸切叶蜂成虫出蜂的下限温度（LTDs）、最适温度和所需积温。通过线性和非线性回归分析，对七种温度（3.9、12.0、18.6、26.6、30.3、35.6 和 42.5°C）下日本角胸切叶蜂成虫的温度依赖性出蜂模式进行了建模和模拟。本研究结果表明，雌雄日本角胸切叶蜂成虫出蜂所需的积温分别为 125.2DD 和 179.8DD，下限温度分别为 8.9°C 和 8.6°C。雌雄成虫出蜂的最适温度分别为 36.5°C、30.2°C 和 35.7°C。本研究表明，可以对日本角胸切叶蜂成虫的出蜂进行人工操作，使其与目标水果作物的授粉期相吻合。
