Department of Entomology, University of California, Riverside, CA, 92521, USA.
Center for Invasive Species Research, University of California, Riverside, CA, 92521, USA.
J Insect Sci. 2022 Mar 1;22(2). doi: 10.1093/jisesa/ieac011.
Heilipus lauri Boheman (Coleoptera: Curculionidae) is a specialist pest of avocado fruit and is considered an incursion risk for U.S. avocado producers. At the time work reported here was undertaken the flight capabilities of H. lauri were unknown. Consequently, proactive studies were undertaken to quantify aspects of this pest's flight capabilities to inform potential future control efforts. Flight mill studies were conducted in a quarantine laboratory to measure the dispersal capacity of H. lauri with respect to gender, mating status, and size on the single and repeat flight capabilities of weevils. Gender, mating status, and size did not significantly affect measured flight parameters. Average total distances flown and flight velocity, and mean maximum flight bout distances and durations significantly declined as weevil age increased and when weevils engaged in repeat flights. Survivorship rates were significantly reduced as the number of successive flights undertaken increased. The distribution of total average flight distances flown and total cumulative flight distances flown was platykurtic. The implications of these findings are discussed in terms of developing incursion management plans.
鳄梨果象甲（鞘翅目：象甲科）是鳄梨果实的专业害虫，被认为是美国鳄梨种植者入侵的风险。在进行这里报告的工作时，尚不清楚鳄梨果象甲的飞行能力。因此，开展了积极的研究来量化该害虫飞行能力的各个方面，以为未来的潜在控制工作提供信息。在检疫实验室中进行了飞行测功机研究，以测量鳄梨果象甲的扩散能力，具体涉及性别、交配状态和大小对单次和重复飞行能力的影响。性别、交配状态和大小对测量的飞行参数没有显著影响。随着象甲年龄的增加以及重复飞行时，平均总飞行距离、飞行速度以及平均最大飞行回合距离和持续时间显著下降。随着连续飞行次数的增加，存活率显著降低。总平均飞行距离和总累积飞行距离的分布呈扁态分布。这些发现的意义在制定入侵管理计划方面进行了讨论。
