Sensory adaptations reshaped intrinsic factors underlying morphological diversification in bats.

Sensory adaptations reshaped intrinsic factors underlying morphological diversification in bats.
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DOI:
10.1186/s12915-021-01022-3
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发表时间:
2021-04-30
期刊:
影响因子:
5.4
通讯作者:
Santana SE
Santana SE
中科院分区:
生物学2区
文献类型:
--
作者:
Arbour JH;Curtis AA;Santana SE

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形态进化可能受到内在(发育、构造、生理)和外在(生态机会和释放)因素的影响,但内在因素是否可以通过适应性进化而改变?如果可以,它们是否会限制或促进生物形态的后续多样化?随着蝙蝠进化出不同的感觉模式,它们在头骨形状上经历了深刻的适应性分歧;在这里,我们研究了这一过程对两个内在因素的潜在影响,这些因素是生物形态变化的基础,异速生长和模块化。我们使用比较系统发育和形态计量学方法来检查跨越所有主要蝙蝠支系的三维几何形态计量数据集的进化异速和模块化模式。我们发现回声定位器和视觉导向的非回声定位器之间的异速关系存在分歧,并且鼻回声定位的进化重塑了蝙蝠头盖骨的模块化。异速和模块化的变化可能对解剖结构的多样化产生重大影响,正如在蝙蝠头骨中观察到的那样。
Morphological evolution may be impacted by both intrinsic (developmental, constructional, physiological) and extrinsic (ecological opportunity and release) factors, but can intrinsic factors be altered by adaptive evolution and, if so, do they constrain or facilitate the subsequent diversification of biological form? Bats underwent deep adaptive divergences in skull shape as they evolved different sensory modes; here we investigate the potential impact of this process on two intrinsic factors that underlie morphological variation across organisms, allometry, and modularity. We use comparative phylogenetic and morphometric approaches to examine patterns of evolutionary allometry and modularity across a 3D geometric morphometric dataset spanning all major bat clades. We show that allometric relationships diverge between echolocators and visually oriented non-echolocators and that the evolution of nasal echolocation reshaped the modularity of the bat cranium. Shifts in allometry and modularity may have significant consequences on the diversification of anatomical structures, as observed in the bat skull.
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