Dataset Information

Rampant tooth loss across 200 million years of frog evolution.

ABSTRACT: Teeth are present in most clades of vertebrates but have been lost completely several times in actinopterygian fishes and amniotes. Using phenotypic data collected from over 500 genera via micro-computed tomography, we provide the first rigorous assessment of the evolutionary history of dentition across all major lineages of amphibians. We demonstrate that dentition is invariably present in caecilians and salamanders, but teeth have been lost completely more than 20 times in frogs, a much higher occurrence of edentulism than in any other vertebrate group. The repeated loss of teeth in anurans is associated with a specialized diet of small invertebrate prey as well as shortening of the lower jaw, but it is not correlated with a reduction in body size. Frogs provide an unparalleled opportunity for investigating the molecular and developmental mechanisms of convergent tooth loss on a large phylogenetic scale.

SUBMITTER: Paluh DJ

PROVIDER: S-EPMC8169120 | biostudies-literature | 2021 Jun

REPOSITORIES: biostudies-literature

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Rampant tooth loss across 200 million years of frog evolution.

Paluh Daniel J DJ Riddell Karina K Early Catherine M CM Hantak Maggie M MM Jongsma Gregory Fm GF Keeffe Rachel M RM Magalhães Silva Fernanda F Nielsen Stuart V SV Vallejo-Pareja María Camila MC Stanley Edward L EL Blackburn David C DC

eLife 20210601

Teeth are present in most clades of vertebrates but have been lost completely several times in actinopterygian fishes and amniotes. Using phenotypic data collected from over 500 genera via micro-computed tomography, we provide the first rigorous assessment of the evolutionary history of dentition across all major lineages of amphibians. We demonstrate that dentition is invariably present in caecilians and salamanders, but teeth have been lost completely more than 20 times in frogs, a much higher ...[more]

PMID: 34060471

Dataset Information

Rampant tooth loss across 200 million years of frog evolution.

Publications

Rampant tooth loss across 200 million years of frog evolution.

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