Wing wear, aerodynamics and flight energetics in bumblebees (Bombus terrestris):: an experimental study
Wing wear, aerodynamics and flight energetics in bumblebees (Bombus terrestris):: an experimental study
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DOI：
10.1046/j.0269-8463.2001.00531.x
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发表时间：
2001-08-01
影响因子：
5.2
通讯作者：
Wolf, TJ
中科院分区：
文献类型：
--
作者：
Hedenström, A;Ellington, CP;Wolf, TJ
I.先前的研究表明，翅膀磨损会增加大黄蜂的死亡率。对此提出了两种近似的解释：增加的能源飞行成本和由于机动性降低而增加的捕食风险。机翼磨损是通过实验性地剪断前翼末端后缘来模拟的，导致机翼面积减少10%。将实验组和假对照组熊蜂置于飞行呼吸机中进行悬停，测定其代谢率。同时进行了视频和声音记录，以获得气动力分析所需的翼振运动学数据。在减小机翼面积的实验组中，我们测得翼拍频率、升力系数和诱导功率增加，但剖面功率减小。假设飞行系统中有理想的弹性储存，在机翼修整处理后，机械功率输出基本保持不变.代谢飞行成本（CO2产生率）在机翼面积减小的组中没有显著增加，这与气动功率输出一致。我们的研究结果表明，增加飞行成本，由于翅膀磨损是不是一个可能的解释增加死亡率在熊蜂。然而，翅膀磨损可能会影响逃避捕食者的表现。
I. Previous work has shown that wing wear increases mortality rate in bumblebees. Two proximate explanations have been suggested to account for this: increased energy flight costs and increased predation risk due to reduced manoeuvrability.2. Wing wear was mimicked by experimentally clipping the forewing distal trailing edge, causing a 10% wing area reduction. Experimental and sham control bumblebees were induced to hover in a flight respirometry chamber for measuring metabolic rate of hovering. Simultaneous video and sound recordings were taken for wingbeat kinematic data required for an aerodynamic analysis.3. In the experimental group with reduced wing area we measured increased wingbeat frequency, lift coefficient and induced power, but a reduced profile power. The mechanical power output, assuming perfect elastic storage in the flight system, remained largely unchanged after the wing-trimming treatment.4. Metabolic flight costs (CO2 production rate) did not increase significantly in the reduced wing area group, which is in line with the aerodynamic power output.5. Our results indicate that an increase of flight cost due to wing wear is not a likely explanation for increased mortality rate in bumblebees. Wing wear may, however, affect escape performance from predators.