Flight behavior of four species of Holotrichia chafer (Coleoptera: Scarabaeidae) with different habitat use
Flight behavior of four species of Holotrichia chafer (Coleoptera: Scarabaeidae) with different habitat use
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DOI：
10.1007/s13355-021-00733-x
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发表时间：
2021-03-23
影响因子：
1.3
通讯作者：
Kojima, Wataru
中科院分区：
文献类型：
--
作者：
Harada, Masahiro;Nakata, Toshiyuki;Kojima, Wataru
昆虫的飞行行为因物种而异，飞行行为多样化背后的选择压力仍有待充分阐明。比较不同生态环境下同种昆虫的飞行行为有助于更好地理解昆虫飞行行为多样化的机制。在这项研究中，我们比较了四种夜间活动的Holotrichia black chafers（鞘翅目：金龟科）在实验室竞技场的飞行表现。采用主成分分析法对6个运动学参数进行了分析，总结了各物种的飞行性能。结果表明，以硬木类植物叶片为食的平行飞蛾的飞行速度比以草本植物为食的kiotonensis、picea和convexopyga快得多。然而，可操作性（旋转分量）在四个物种之间没有显著差异。我们进一步使用绳系飞行磨系统比较了平行木和kiotonensis的飞行速度。与自由飞行的观测结果相似，平行木虱的飞行速度显著大于kiotonensis的飞行速度。种间速度的差异可能与寄主植物空间分布的差异有关。
Insect flight behavior varies among species and selective pressures underlying the diversification of flight performance remain to be fully elucidated. Comparisons of flight behavior among congeners with differing ecologies can contribute to gaining a better understanding of the mechanisms underlying the diversification of insect flight behavior. In this study, we compared the laboratory arena flight performance of four species of nocturnal Holotrichia black chafers (Coleoptera: Scarabaeidae) based on three-dimensional reconstructions of flight trajectories. Principal component analysis was applied to six kinematic parameters to summarize the flight performance of each species. We found that the flight of H. parallela, which feeds on the leaves of hardwood species, was faster and higher than that of the other three species (H. kiotonensis, H. picea, and H. convexopyga), which typically feed on herbaceous plants. However, maneuverability (rotational component) did not differ significantly among the four species. We further compared the flight velocities of H. parallela and H. kiotonensis using a tethered flight mill system. Similar to the free-flight observations, the velocity of H. parallela flights was significantly greater than that of H. kiotonensis. The interspecific difference in velocities may be associated with differences in spatial distribution of their host plants.