Differential cellular proliferation underlies heterochronic generation of cranial diversity in phyllostomid bats

EvoDevo
Jasmin CamachoArhat Abzhanov

Abstract

Skull diversity in the neotropical leaf-nosed bats (Phyllostomidae) evolved through a heterochronic process called peramorphosis, with underlying causes varying by subfamily. The nectar-eating (subfamily Glossophaginae) and blood-eating (subfamily Desmondontinae) groups originate from insect-eating ancestors and generate their uniquely shaped faces and skulls by extending the ancestral ontogenetic program, appending new developmental stages and demonstrating peramorphosis by hypermorphosis. However, the fruit-eating phyllostomids (subfamilies Carollinae and Stenodermatinae) adjust their craniofacial development by speeding up certain developmental processes, displaying peramorphosis by acceleration. We hypothesized that these two forms of peramorphosis detected by our morphometric studies could be explained by differential growth and investigated cell proliferation during craniofacial morphogenesis. We obtained cranial tissues from four wild-caught bat species representing a range of facial diversity and labeled mitotic cells using immunohistochemistry. During craniofacial development, all bats display a conserved spatiotemporal distribution of proliferative cells with distinguishable zones of elevated mitosis. These areas were...Continue Reading

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Citations

Feb 3, 2021·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Alexa SadierMolly Womack
Oct 26, 2021·The Anatomical Record : Advances in Integrative Anatomy and Evolutionary Biology·Zachary S MorrisStephanie E Pierce
Nov 27, 2021·Journal of Experimental Zoology. Part B, Molecular and Developmental Evolution·Mariya P DobrevaArkhat Abzhanov

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Methods Mentioned

BETA
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Software Mentioned

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FIJI Plugin
Mesquite
Olympus
fastAnc
formats
Phytools fastAnc
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