Evolution of scapula shape in several families of bats (Chiroptera, Mammalia),Journal of Zoological Systematics and Evolutionary Research

当前位置： X-MOL 学术 › J. Zool. Syst. Evol. Res. › 论文详情

Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)

Evolution of scapula shape in several families of bats (Chiroptera, Mammalia)
Journal of Zoological Systematics and Evolutionary Research ( IF 2.0 ) Pub Date : 2020-04-24 , DOI: 10.1111/jzs.12383
Pablo J. Gaudioso _{1,

2} , Juan J. Martínez ₃ , Rubén M. Barquez ₁ , M. Mónica Díaz _{1,

4}

Affiliation

The morphological variation of the scapula of bats, in a phylogenetic context, is still unknown. However, several descriptive–comparative and morphofunctional studies about the scapular girdles and forelimbs and their importance in the wing‐beat cycle are well known and documented. In this study, we tested the hypothesis that there is a conjunction of factors that influences the size and shape of the scapula in bats, such as phylogenetic effects and lifestyle traits. We analyzed the variation in size and shape of the scapula of six families of bats (277 specimens from 91 species) using geometric morphometrics in a phylogenetic context. The results indicate that phylogenetic signal for both size and shape of the scapula is strong. The phylomorphospace indicates a clear separation by families, with Phyllostomidae and Molossidae being the most different from each other. Phylogenetic signal was also strong for size and shape of the scapula within the family Phyllostomidae. According to phylogenetic analyses of variance, the shape and size of the scapula are not affected by the lifestyle of the bats, independently of phylogeny, except for the type of flight in Vespertilionidae. The results in this family indicate that, in addition to strong phylogenetic signal in scapular morphology, there is evidence of some evolutionary convergence that supports an adaptive interpretation. However, the assessments to test morphological convergence failed to find phenotypic similarity within states of lifestyle traits, except for insectivore species which presented some degree of morphological resemblance in the shape of the scapula. Thus, it seems that at higher taxonomic levels (e.g., among families) the morphology of the scapula is phylogenetically conserved, whereas patterns of convergent evolution are visible at lower taxonomic levels (e.g., within families).

中文翻译：

几种蝙蝠（肩opter目，哺乳动物）的肩cap骨形状的演变

在系统发育的背景下，蝙蝠的肩cap骨的形态变化仍是未知的。但是，关于肩cap带和前肢及其在机翼搏动周期中的重要性的一些描述性，比较性和形态功能研究是众所周知的并有文献记载。在这项研究中，我们检验了以下假设：系统发育因素和生活方式特征等多种因素共同影响蝙蝠的肩cap骨的大小和形状。我们在系统发育背景下使用几何形态计量学分析了六类蝙蝠（91种的277个标本）的肩cap骨的大小和形状的变化。结果表明，肩骨的大小和形状的系统发育信号都很强。系统形态空间表明各科之间存在明显的分离，毛竹科和毛科之间的差异最大。系统发育信号对于毛状Ph科的肩骨的大小和形状也很强。根据方差的系统发育分析，除了Vespertilionidae的飞行类型外，肩cap骨的形状和大小不受系统发育影响的蝙蝠生活方式影响。该家族的结果表明，除了肩cap骨形态学上的强系统发生信号外，还有证据表明某些进化收敛支持自适应解释。但是，测试形态收敛的评估未能在生活方式特征的状态内找到表型相似性，除了食虫类物种的肩cap骨形状具有一定程度的形态相似性。从而，

更新日期：2020-04-24

点击分享查看原文

点击收藏

阅读更多本刊最新论文本刊介绍/投稿指南11