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Related Experiment Video

Updated: Apr 7, 2026

Tissue Collection of Bats for -Omics Analyses and Primary Cell Culture

Tissue Collection of Bats for -Omics Analyses and Primary Cell Culture

Published on: October 23, 2019

Unsupervised Wing-Bone Morphogroups in Bats Reveal Phylogenetic and Functional Patterns.

S S Zalapa¹, J M Vargas-Aldaco¹, S Guerrero-Vázquez¹

¹Departamento de Botánica y Zoología, Centro Universitario de Ciencias Biológicas y Agropecuarias, Universidad de Guadalajara, Camino Ramón Padilla Sánchez No. 2100, Las Agujas, 45200 Zapopan, Jalisco, México.

Integrative Organismal Biology (Oxford, England)

|April 6, 2026

Summary

This study reveals five distinct bat wing bone groups (MWBGs) based on skeletal proportions, offering a new way to understand bat flight evolution beyond ecological guilds. These groups highlight key bone variations influencing wing design.

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Area of Science:

* Comparative anatomy and biomechanics of vertebrate flight.
* Evolutionary morphology and phylogenetic analysis.
* Quantitative analysis of skeletal variation.

Background:

* Bat wing morphology is crucial for flight performance but poorly understood regarding individual bone contributions.
* Traditional classifications rely on aerodynamic indices and ecological guilds, overlooking skeletal structure.
* The role of specific wing bone proportions in shaping overall wing design requires further investigation.

Purpose of the Study:

* To determine if wing bone proportions can objectively define bat wing morphotypes.
* To identify unsupervised morpho-wing bone groups (MWBGs) across Chiroptera.
* To compare the utility of MWBGs with existing ecological classifications for understanding flight diversity.

Main Methods:

* Quantified proportional variation of 10 wing bone elements relative to forearm length in 526 individuals (59 species).
* Utilized log-ratio transformation, principal component analysis, and hierarchical clustering.
* Validated groups using linear discriminant analysis and phylogenetic mapping.

Main Results:

* Identified five robust MWBGs reflecting coordinated variation in distal, intermediate, and proximal wing elements.
* MWBGs were independent of ecological guilds and showed superior discriminant performance.
* Phylogenetic analysis indicated both conserved and convergent patterns of MWBG evolution, with distal phalanges and metacarpals being key differentiators.

Conclusions:

* Wing bone proportions provide fundamental structural dimensions for bat wing morphology.
* MWBGs offer a complementary, skeleton-centered framework for studying bat flight evolution.
* This approach reveals insights into functional convergence and phylogenetic constraints in wing skeletal design.