UNDER PRESSURE? DENTAL ADAPTATIONS TO TERMITOPHAGY AND VERMIVORY AMONG MAMMALS
Identifieur interne : 002809 ( Main/Exploration ); précédent : 002808; suivant : 002810UNDER PRESSURE? DENTAL ADAPTATIONS TO TERMITOPHAGY AND VERMIVORY AMONG MAMMALS
Auteurs : Cyril Charles [France] ; Floréal Solé [France, Belgique] ; Helder Gomes Rodrigues [France] ; Laurent Viriot [France]Source :
- Evolution [ 0014-3820 ] ; 2013-06.
Descripteurs français
- Wicri :
- topic : Sulawesi.
English descriptors
- KwdEn :
- Aardvark, Aardwolf, Abnormal rhynchomys specimens, Abnormal specimens, Anteater, Armadillo, Biol, Cheek teeth, Coding regions, Complete loss, Crown shape, Crown shape simplification, Cusp, Cyril, Cyril charles, Dental evolution, Dentition, Diastema, Echidna, Edardlj, Edardlj mutants, Edata, Enamel, Enamel loss, Eupleres, Evolution june, Evolutionary trends, Falanouc, Fmnh, Fossil, Fossil record, Genus, Gomes rodrigues, Helgen, Intermolar, Intermolar diastemata, June, Lower molars, Mammal, Mesial, Mesial part, Molar, Morphology, Muridae, Muridae rodentia, Murinae, Murine, Mutant, Mutation, Natural history, Numbat, Other specimens, Pangolin, Pathway, Paucidentomys, Postcanine, Postcanine teeth, Premolar, Pseudohydromys, Rhynchomys, Right tooth, Rodentia, Secondary tool, Secondary tools, Selection pressure, Shape simplification, Shrew, Simplification, Sloth, Soricoides, Sulawesi, Sulawesi shrew, Supernumerary, Supernumerary teeth, Supernumerary tooth, Tapulao, Tateomys, Taxon, Tenrec, Termitophageous, Termitophageous mammals, Termitophageous species, Termitophagy, Tooth number, Upper molars, Vermivorous, Vermivorous mammals, Vermivorous species, Vermivory, Xenarthra.
- Teeft :
- Aardvark, Aardwolf, Abnormal rhynchomys specimens, Abnormal specimens, Anteater, Armadillo, Biol, Cheek teeth, Coding regions, Complete loss, Crown shape, Crown shape simplification, Cusp, Cyril, Cyril charles, Dental evolution, Dentition, Diastema, Echidna, Edardlj, Edardlj mutants, Edata, Enamel, Enamel loss, Eupleres, Evolution june, Evolutionary trends, Falanouc, Fmnh, Fossil, Fossil record, Genus, Gomes rodrigues, Helgen, Intermolar, Intermolar diastemata, June, Lower molars, Mammal, Mesial, Mesial part, Molar, Morphology, Muridae, Muridae rodentia, Murinae, Murine, Mutant, Mutation, Natural history, Numbat, Other specimens, Pangolin, Pathway, Paucidentomys, Postcanine, Postcanine teeth, Premolar, Pseudohydromys, Rhynchomys, Right tooth, Rodentia, Secondary tool, Secondary tools, Selection pressure, Shape simplification, Shrew, Simplification, Sloth, Soricoides, Sulawesi, Sulawesi shrew, Supernumerary, Supernumerary teeth, Supernumerary tooth, Tapulao, Tateomys, Taxon, Tenrec, Termitophageous, Termitophageous mammals, Termitophageous species, Termitophagy, Tooth number, Upper molars, Vermivorous, Vermivorous mammals, Vermivorous species, Vermivory, Xenarthra.
Abstract
The extant mammals have evolved highly diversified diets associated with many specialized morphologies. Two rare diets, termitophagy and vermivory, are characterized by unusual morphological and dental adaptations that have evolved independently in several clades. Termitophagy is known to be associated with increases in tooth number, crown simplification, enamel loss, and the appearance of intermolar diastemata. We observed similar modifications at the species level in vermivorous clades, although interestingly the vermivorous mammals lack secondarily derived tools that compensate for the dentition's reduced function. We argue that the parallel dental changes in these specialists are the result of relaxed selection on occlusal functions of the dentition, which allow a parallel cascade of changes to occur independently in each clade. Comparison of the phenotypes of Rhynchomys, a vermivorous rat, and strains of mice whose ectodysplasin (EDA) pathway has been mutated revealed several shared dental features. Our results point to the likely involvement of this genetic pathway in the rapid, parallel morphological specializations in termitophagous and vermivorous species. We show that diets or feeding mechanisms in other mammals that are linked to decreased reliance on complex can lead to similar cascades of change.
Url:
DOI: 10.1111/evo.12051
Affiliations:
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xml:lang="fr">France</country><wicri:regionArea>Team Evo‐Devo of Vertebrate Dentition, Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, CNRS UMR 5242, UCBL 1, Ecole Normale Supérieure de Lyon, 46 Allée d’Italie, 69364 Lyon Cedex 07</wicri:regionArea><wicri:noRegion>69364 Lyon Cedex 07</wicri:noRegion><wicri:noRegion>69364 Lyon Cedex 07</wicri:noRegion></affiliation></author><author><name sortKey="Viriot, Laurent" sort="Viriot, Laurent" uniqKey="Viriot L" first="Laurent" last="Viriot">Laurent Viriot</name><affiliation wicri:level="1"><country xml:lang="fr">France</country><wicri:regionArea>Team Evo‐Devo of Vertebrate Dentition, Institut de Génomique Fonctionnelle de Lyon, Université de Lyon, CNRS UMR 5242, UCBL 1, Ecole Normale Supérieure de Lyon, 46 Allée d’Italie, 69364 Lyon Cedex 07</wicri:regionArea><wicri:noRegion>69364 Lyon Cedex 07</wicri:noRegion><wicri:noRegion>69364 Lyon Cedex 07</wicri:noRegion></affiliation></author></analytic><monogr></monogr><series><title level="j" type="main">Evolution</title><title level="j" type="alt">EVOLUTION</title><idno type="ISSN">0014-3820</idno><idno type="eISSN">1558-5646</idno><imprint><biblScope unit="vol">67</biblScope><biblScope unit="issue">6</biblScope><biblScope unit="page" from="1792">1792</biblScope><biblScope unit="page" to="1804">1804</biblScope><biblScope unit="page-count">13</biblScope><date type="published" when="2013-06">2013-06</date></imprint><idno type="ISSN">0014-3820</idno></series></biblStruct></sourceDesc><seriesStmt><idno type="ISSN">0014-3820</idno></seriesStmt></fileDesc><profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Aardvark</term><term>Aardwolf</term><term>Abnormal rhynchomys specimens</term><term>Abnormal specimens</term><term>Anteater</term><term>Armadillo</term><term>Biol</term><term>Cheek teeth</term><term>Coding regions</term><term>Complete loss</term><term>Crown shape</term><term>Crown shape simplification</term><term>Cusp</term><term>Cyril</term><term>Cyril charles</term><term>Dental evolution</term><term>Dentition</term><term>Diastema</term><term>Echidna</term><term>Edardlj</term><term>Edardlj mutants</term><term>Edata</term><term>Enamel</term><term>Enamel loss</term><term>Eupleres</term><term>Evolution june</term><term>Evolutionary trends</term><term>Falanouc</term><term>Fmnh</term><term>Fossil</term><term>Fossil record</term><term>Genus</term><term>Gomes rodrigues</term><term>Helgen</term><term>Intermolar</term><term>Intermolar diastemata</term><term>June</term><term>Lower molars</term><term>Mammal</term><term>Mesial</term><term>Mesial part</term><term>Molar</term><term>Morphology</term><term>Muridae</term><term>Muridae rodentia</term><term>Murinae</term><term>Murine</term><term>Mutant</term><term>Mutation</term><term>Natural history</term><term>Numbat</term><term>Other specimens</term><term>Pangolin</term><term>Pathway</term><term>Paucidentomys</term><term>Postcanine</term><term>Postcanine teeth</term><term>Premolar</term><term>Pseudohydromys</term><term>Rhynchomys</term><term>Right tooth</term><term>Rodentia</term><term>Secondary tool</term><term>Secondary tools</term><term>Selection pressure</term><term>Shape simplification</term><term>Shrew</term><term>Simplification</term><term>Sloth</term><term>Soricoides</term><term>Sulawesi</term><term>Sulawesi shrew</term><term>Supernumerary</term><term>Supernumerary teeth</term><term>Supernumerary tooth</term><term>Tapulao</term><term>Tateomys</term><term>Taxon</term><term>Tenrec</term><term>Termitophageous</term><term>Termitophageous mammals</term><term>Termitophageous species</term><term>Termitophagy</term><term>Tooth number</term><term>Upper molars</term><term>Vermivorous</term><term>Vermivorous mammals</term><term>Vermivorous species</term><term>Vermivory</term><term>Xenarthra</term></keywords><keywords scheme="Teeft" xml:lang="en"><term>Aardvark</term><term>Aardwolf</term><term>Abnormal rhynchomys specimens</term><term>Abnormal specimens</term><term>Anteater</term><term>Armadillo</term><term>Biol</term><term>Cheek teeth</term><term>Coding regions</term><term>Complete loss</term><term>Crown shape</term><term>Crown shape simplification</term><term>Cusp</term><term>Cyril</term><term>Cyril charles</term><term>Dental evolution</term><term>Dentition</term><term>Diastema</term><term>Echidna</term><term>Edardlj</term><term>Edardlj mutants</term><term>Edata</term><term>Enamel</term><term>Enamel loss</term><term>Eupleres</term><term>Evolution june</term><term>Evolutionary trends</term><term>Falanouc</term><term>Fmnh</term><term>Fossil</term><term>Fossil record</term><term>Genus</term><term>Gomes rodrigues</term><term>Helgen</term><term>Intermolar</term><term>Intermolar diastemata</term><term>June</term><term>Lower molars</term><term>Mammal</term><term>Mesial</term><term>Mesial part</term><term>Molar</term><term>Morphology</term><term>Muridae</term><term>Muridae rodentia</term><term>Murinae</term><term>Murine</term><term>Mutant</term><term>Mutation</term><term>Natural history</term><term>Numbat</term><term>Other specimens</term><term>Pangolin</term><term>Pathway</term><term>Paucidentomys</term><term>Postcanine</term><term>Postcanine teeth</term><term>Premolar</term><term>Pseudohydromys</term><term>Rhynchomys</term><term>Right tooth</term><term>Rodentia</term><term>Secondary tool</term><term>Secondary tools</term><term>Selection pressure</term><term>Shape simplification</term><term>Shrew</term><term>Simplification</term><term>Sloth</term><term>Soricoides</term><term>Sulawesi</term><term>Sulawesi shrew</term><term>Supernumerary</term><term>Supernumerary teeth</term><term>Supernumerary tooth</term><term>Tapulao</term><term>Tateomys</term><term>Taxon</term><term>Tenrec</term><term>Termitophageous</term><term>Termitophageous mammals</term><term>Termitophageous species</term><term>Termitophagy</term><term>Tooth number</term><term>Upper molars</term><term>Vermivorous</term><term>Vermivorous mammals</term><term>Vermivorous species</term><term>Vermivory</term><term>Xenarthra</term></keywords><keywords scheme="Wicri" type="topic" xml:lang="fr"><term>Sulawesi</term></keywords></textClass></profileDesc></teiHeader><front><div type="abstract">The extant mammals have evolved highly diversified diets associated with many specialized morphologies. Two rare diets, termitophagy and vermivory, are characterized by unusual morphological and dental adaptations that have evolved independently in several clades. Termitophagy is known to be associated with increases in tooth number, crown simplification, enamel loss, and the appearance of intermolar diastemata. We observed similar modifications at the species level in vermivorous clades, although interestingly the vermivorous mammals lack secondarily derived tools that compensate for the dentition's reduced function. We argue that the parallel dental changes in these specialists are the result of relaxed selection on occlusal functions of the dentition, which allow a parallel cascade of changes to occur independently in each clade. Comparison of the phenotypes of Rhynchomys, a vermivorous rat, and strains of mice whose ectodysplasin (EDA) pathway has been mutated revealed several shared dental features. Our results point to the likely involvement of this genetic pathway in the rapid, parallel morphological specializations in termitophagous and vermivorous species. We show that diets or feeding mechanisms in other mammals that are linked to decreased reliance on complex can lead to similar cascades of change.</div></front></TEI><affiliations><list><country><li>Belgique</li><li>France</li></country><region><li>Auvergne-Rhône-Alpes</li><li>Rhône-Alpes</li><li>Vienne (Autriche)</li></region><settlement><li>Lyon</li><li>Vienne (Autriche)</li></settlement></list><tree><country name="France"><region name="Auvergne-Rhône-Alpes"><name sortKey="Charles, Cyril" sort="Charles, Cyril" uniqKey="Charles C" first="Cyril" last="Charles">Cyril Charles</name></region><name sortKey="Charles, Cyril" sort="Charles, Cyril" uniqKey="Charles C" first="Cyril" last="Charles">Cyril Charles</name><name sortKey="Rodrigues, Helder Gomes" sort="Rodrigues, Helder Gomes" uniqKey="Rodrigues H" first="Helder Gomes" last="Rodrigues">Helder Gomes Rodrigues</name><name sortKey="Sole, Floreal" sort="Sole, Floreal" uniqKey="Sole F" first="Floréal" last="Solé">Floréal Solé</name><name sortKey="Viriot, Laurent" sort="Viriot, Laurent" uniqKey="Viriot L" first="Laurent" last="Viriot">Laurent Viriot</name></country><country name="Belgique"><region name="Vienne (Autriche)"><name sortKey="Sole, Floreal" sort="Sole, Floreal" uniqKey="Sole F" first="Floréal" last="Solé">Floréal Solé</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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