Escoriza Daniel
GRECO, Institute of Aquatic Ecology University of Girona Girona Spain.
Ecol Evol. 2021 Sep 24;11(21):14733-14743. doi: 10.1002/ece3.8159. eCollection 2021 Nov.
Mediterranean islands have a high diversity of squamates, although they are unevenly distributed. This variability in the composition of the reptile assemblages across islands may have been influenced by differences in the colonization abilities of these species. To evaluate the dispersal capacities of squamate species, we modeled their sea routes using cost surface models. We estimated the effects of some life-history traits and the phylogenetic signal in the characteristics of the modeled dispersal paths. We hypothesized that a significant phylogenetic signal should be present if the dispersal ability is enhanced by traits shared among evolutionarily related species. The results showed that no phylogenetic signal was present in the characteristics of the dispersal paths (i.e., in the distance traveled/bypassed sea depth). Thus, no superior island-colonizer lineages were detected in Mediterranean Squamata. However, our analyses also revealed that small-sized lizards were superior to other groups of squamates at dispersing over long distances on the sea.
地中海诸岛有种类丰富的有鳞目动物，尽管它们分布不均。各岛屿上爬行动物群落组成的这种差异可能受到这些物种定殖能力差异的影响。为了评估有鳞目物种的扩散能力，我们使用成本表面模型对它们的海路进行了建模。我们估计了一些生活史特征和系统发育信号对建模扩散路径特征的影响。我们假设，如果扩散能力因进化相关物种共有的特征而增强，那么应该会有显著的系统发育信号。结果表明，扩散路径的特征（即行进距离/绕过的海深）中不存在系统发育信号。因此，在地中海有鳞目动物中未检测到优越的岛屿定殖者谱系。然而，我们的分析还表明，小型蜥蜴在海上长距离扩散方面优于其他有鳞目动物群体。
