Department of Complexity Science and Engineering, Graduate School of Frontier Science, The University of Tokyo, 5-1-5 Kashiwanoha, Kashiwa, Chiba, 277-8561, Japan.
Department of Physics, Graduate School of Science, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo, 133-0033, Japan.
BMC Biol. 2021 Sep 2;19(1):176. doi: 10.1186/s12915-021-01110-4.
Speed and trajectory of locomotion are the characteristic traits of individual species. Locomotion kinematics may have been shaped during evolution towards increased survival in the habitats of each species. Although kinematics of locomotion is thought to be influenced by habitats, the quantitative relation between the kinematics and environmental factors has not been fully revealed. Here, we performed comparative analyses of larval locomotion in 11 Drosophila species.
We found that larval locomotion kinematics are divergent among the species. The diversity is not correlated to the body length but is correlated instead to the habitat temperature of the species. Phylogenetic analyses using Bayesian inference suggest that the evolutionary rate of the kinematics is diverse among phylogenetic tree branches.
The results of this study imply that the kinematics of larval locomotion has diverged in the evolutionary history of the genus Drosophila and evolved under the effects of the ambient temperature of habitats.
运动速度和轨迹是物种的特征。运动运动学可能是在进化过程中为了在每个物种的栖息地中提高生存能力而形成的。尽管运动学被认为受到栖息地的影响，但运动学和环境因素之间的定量关系尚未完全揭示。在这里，我们对 11 种果蝇的幼虫运动进行了比较分析。
我们发现，幼虫运动运动学在物种之间存在差异。这种多样性与体长无关，而是与物种栖息地的温度有关。使用贝叶斯推断进行的系统发育分析表明，运动学的进化率在系统发育树分支之间是多样的。
本研究的结果表明，果蝇属的幼虫运动运动学在进化历史中已经出现了分化，并在栖息地环境温度的影响下进化。
