Parallelism and convergence in anuran fangs
Identifieur interne : 000F64 ( Istex/Curation ); précédent : 000F63; suivant : 000F65Parallelism and convergence in anuran fangs
Auteurs : Marissa Fabrezi [Argentine] ; Sharon B. Emerson [États-Unis]Source :
- Journal of Zoology [ 0952-8369 ] ; 2003-05.
English descriptors
- KwdEn :
- Adspersus, Amnh, Anura, Anuran, Anuran fangs, Aubria, Aubria subsigillata, Brevis, Ceratobatrachus, Ceratobatrachus guentheri, Ceratophryine, Ceratophryine leptodactylids, Ceratophrys, Ceratophrys cranwelli, Chacophrys, Chacophrys pierotti, Ciencias naturales, Connective tissue, Conraua, Conraua crassipes, Convergence, Corrugata, Cranwelli, Crassipes, Dentary, Dimorphism, Duellman, Fabrezi, Family hylidae, Fang, Fang length, Fang lengths, Fang size, Fanged, Fanged frogs, Fanged species, Fmnh, Ford cannatella, Frog, Frog odontoids, Guentheri, Hemiphractus, Hemiphractus proboscideus, Hoplobatrachus, Hoplobatrachus occipitalis, Hylidae, Independent evolution, Katsikaros, Katsikaros shine, Laevis, Large prey, Larger fangs, Larval, Larval stages, Lepidobatrachus, Lepidobatrachus laevis, Lepidobatrachus llanensis, Leptodactylid, Leptodactylus, Leptodactylus laticeps, Limnocharis, Limnonectes, Llanensis, Mandible, Mandibular, Mandibular symphysis, Medial process, Mentomeckelian, Molecular data, Monocuspid, Natural history, Natural selection, Occidozyga laevis, Occipitalis, Odontoid, Odontoid germs, Odontoids, Pathway, Pedicellate, Pedicellate bicuspid, Phylogenetic, Phylogenetic relationships, Platymantis, Platymantis vitiensis, Pyxicephalus, Pyxicephalus adspersus, Rana, Rana cancrivora, Rana corrugata, Rana limnocharis, Ranidae, Ranine, Ranine frogs, Relative fang length, Relative fang size, Relative fang sizes, Right mandible, Salta, Sexual dimorphism, Sexual selection, Single regression equation, Sphaerotheca, Sphaerotheca pluvialis, Subsigillata, Symphysis, Taxon, Trueb, Universidad nacional, Vitiensis, Zool.
- Teeft :
- Adspersus, Amnh, Anura, Anuran, Anuran fangs, Aubria, Aubria subsigillata, Brevis, Ceratobatrachus, Ceratobatrachus guentheri, Ceratophryine, Ceratophryine leptodactylids, Ceratophrys, Ceratophrys cranwelli, Chacophrys, Chacophrys pierotti, Ciencias naturales, Connective tissue, Conraua, Conraua crassipes, Convergence, Corrugata, Cranwelli, Crassipes, Dentary, Dimorphism, Duellman, Fabrezi, Family hylidae, Fang, Fang length, Fang lengths, Fang size, Fanged, Fanged frogs, Fanged species, Fmnh, Ford cannatella, Frog, Frog odontoids, Guentheri, Hemiphractus, Hemiphractus proboscideus, Hoplobatrachus, Hoplobatrachus occipitalis, Hylidae, Independent evolution, Katsikaros, Katsikaros shine, Laevis, Large prey, Larger fangs, Larval, Larval stages, Lepidobatrachus, Lepidobatrachus laevis, Lepidobatrachus llanensis, Leptodactylid, Leptodactylus, Leptodactylus laticeps, Limnocharis, Limnonectes, Llanensis, Mandible, Mandibular, Mandibular symphysis, Medial process, Mentomeckelian, Molecular data, Monocuspid, Natural history, Natural selection, Occidozyga laevis, Occipitalis, Odontoid, Odontoid germs, Odontoids, Pathway, Pedicellate, Pedicellate bicuspid, Phylogenetic, Phylogenetic relationships, Platymantis, Platymantis vitiensis, Pyxicephalus, Pyxicephalus adspersus, Rana, Rana cancrivora, Rana corrugata, Rana limnocharis, Ranidae, Ranine, Ranine frogs, Relative fang length, Relative fang size, Relative fang sizes, Right mandible, Salta, Sexual dimorphism, Sexual selection, Single regression equation, Sphaerotheca, Sphaerotheca pluvialis, Subsigillata, Symphysis, Taxon, Trueb, Universidad nacional, Vitiensis, Zool.
Abstract
The anuran lower jaw is composed of three pairs of bones: dentaries, angulosplenials and mentomeckelians. Although the lower jaw is toothless, except in Gastrotheca guentheri, enlarged fangs or odontoids have evolved at least four times independently in some myobatrachids, hylids, ranids and leptodactylids through both parallel and convergent evolutionary events. Fangs seem to represent the single best design solution to enable an anuran to inflict a bite‐like wound, but the biological role of biting varies among species. Fangs are projections of the dentaries in ranids, but in the hylid frog Hemiphractus and in ceratophryine leptodactylids, they form a sinosteotic unit with the dentaries and mentomeckelians. Comparisons of morphology, behaviour and diet among frog taxa with enlarged fangs reveal that the fangs may be the result of either sexual or natural selection. Those fangs that evolved in response to sexual selection seem to be relatively larger than those that resulted of natural selection.
Url:
DOI: 10.1017/S0952836903003479
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<author><name sortKey="Fabrezi, Marissa" sort="Fabrezi, Marissa" uniqKey="Fabrezi M" first="Marissa" last="Fabrezi">Marissa Fabrezi</name>
<affiliation wicri:level="1"><mods:affiliation>CONICET, Museo de Ciencias Naturales, Universidad Nacional de Salta, Mendoza 2, 4400‐Salta, Argentina</mods:affiliation>
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<author><name sortKey="Emerson, Sharon B" sort="Emerson, Sharon B" uniqKey="Emerson S" first="Sharon B." last="Emerson">Sharon B. Emerson</name>
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<profileDesc><textClass><keywords scheme="KwdEn" xml:lang="en"><term>Adspersus</term>
<term>Amnh</term>
<term>Anura</term>
<term>Anuran</term>
<term>Anuran fangs</term>
<term>Aubria</term>
<term>Aubria subsigillata</term>
<term>Brevis</term>
<term>Ceratobatrachus</term>
<term>Ceratobatrachus guentheri</term>
<term>Ceratophryine</term>
<term>Ceratophryine leptodactylids</term>
<term>Ceratophrys</term>
<term>Ceratophrys cranwelli</term>
<term>Chacophrys</term>
<term>Chacophrys pierotti</term>
<term>Ciencias naturales</term>
<term>Connective tissue</term>
<term>Conraua</term>
<term>Conraua crassipes</term>
<term>Convergence</term>
<term>Corrugata</term>
<term>Cranwelli</term>
<term>Crassipes</term>
<term>Dentary</term>
<term>Dimorphism</term>
<term>Duellman</term>
<term>Fabrezi</term>
<term>Family hylidae</term>
<term>Fang</term>
<term>Fang length</term>
<term>Fang lengths</term>
<term>Fang size</term>
<term>Fanged</term>
<term>Fanged frogs</term>
<term>Fanged species</term>
<term>Fmnh</term>
<term>Ford cannatella</term>
<term>Frog</term>
<term>Frog odontoids</term>
<term>Guentheri</term>
<term>Hemiphractus</term>
<term>Hemiphractus proboscideus</term>
<term>Hoplobatrachus</term>
<term>Hoplobatrachus occipitalis</term>
<term>Hylidae</term>
<term>Independent evolution</term>
<term>Katsikaros</term>
<term>Katsikaros shine</term>
<term>Laevis</term>
<term>Large prey</term>
<term>Larger fangs</term>
<term>Larval</term>
<term>Larval stages</term>
<term>Lepidobatrachus</term>
<term>Lepidobatrachus laevis</term>
<term>Lepidobatrachus llanensis</term>
<term>Leptodactylid</term>
<term>Leptodactylus</term>
<term>Leptodactylus laticeps</term>
<term>Limnocharis</term>
<term>Limnonectes</term>
<term>Llanensis</term>
<term>Mandible</term>
<term>Mandibular</term>
<term>Mandibular symphysis</term>
<term>Medial process</term>
<term>Mentomeckelian</term>
<term>Molecular data</term>
<term>Monocuspid</term>
<term>Natural history</term>
<term>Natural selection</term>
<term>Occidozyga laevis</term>
<term>Occipitalis</term>
<term>Odontoid</term>
<term>Odontoid germs</term>
<term>Odontoids</term>
<term>Pathway</term>
<term>Pedicellate</term>
<term>Pedicellate bicuspid</term>
<term>Phylogenetic</term>
<term>Phylogenetic relationships</term>
<term>Platymantis</term>
<term>Platymantis vitiensis</term>
<term>Pyxicephalus</term>
<term>Pyxicephalus adspersus</term>
<term>Rana</term>
<term>Rana cancrivora</term>
<term>Rana corrugata</term>
<term>Rana limnocharis</term>
<term>Ranidae</term>
<term>Ranine</term>
<term>Ranine frogs</term>
<term>Relative fang length</term>
<term>Relative fang size</term>
<term>Relative fang sizes</term>
<term>Right mandible</term>
<term>Salta</term>
<term>Sexual dimorphism</term>
<term>Sexual selection</term>
<term>Single regression equation</term>
<term>Sphaerotheca</term>
<term>Sphaerotheca pluvialis</term>
<term>Subsigillata</term>
<term>Symphysis</term>
<term>Taxon</term>
<term>Trueb</term>
<term>Universidad nacional</term>
<term>Vitiensis</term>
<term>Zool</term>
</keywords>
<keywords scheme="Teeft" xml:lang="en"><term>Adspersus</term>
<term>Amnh</term>
<term>Anura</term>
<term>Anuran</term>
<term>Anuran fangs</term>
<term>Aubria</term>
<term>Aubria subsigillata</term>
<term>Brevis</term>
<term>Ceratobatrachus</term>
<term>Ceratobatrachus guentheri</term>
<term>Ceratophryine</term>
<term>Ceratophryine leptodactylids</term>
<term>Ceratophrys</term>
<term>Ceratophrys cranwelli</term>
<term>Chacophrys</term>
<term>Chacophrys pierotti</term>
<term>Ciencias naturales</term>
<term>Connective tissue</term>
<term>Conraua</term>
<term>Conraua crassipes</term>
<term>Convergence</term>
<term>Corrugata</term>
<term>Cranwelli</term>
<term>Crassipes</term>
<term>Dentary</term>
<term>Dimorphism</term>
<term>Duellman</term>
<term>Fabrezi</term>
<term>Family hylidae</term>
<term>Fang</term>
<term>Fang length</term>
<term>Fang lengths</term>
<term>Fang size</term>
<term>Fanged</term>
<term>Fanged frogs</term>
<term>Fanged species</term>
<term>Fmnh</term>
<term>Ford cannatella</term>
<term>Frog</term>
<term>Frog odontoids</term>
<term>Guentheri</term>
<term>Hemiphractus</term>
<term>Hemiphractus proboscideus</term>
<term>Hoplobatrachus</term>
<term>Hoplobatrachus occipitalis</term>
<term>Hylidae</term>
<term>Independent evolution</term>
<term>Katsikaros</term>
<term>Katsikaros shine</term>
<term>Laevis</term>
<term>Large prey</term>
<term>Larger fangs</term>
<term>Larval</term>
<term>Larval stages</term>
<term>Lepidobatrachus</term>
<term>Lepidobatrachus laevis</term>
<term>Lepidobatrachus llanensis</term>
<term>Leptodactylid</term>
<term>Leptodactylus</term>
<term>Leptodactylus laticeps</term>
<term>Limnocharis</term>
<term>Limnonectes</term>
<term>Llanensis</term>
<term>Mandible</term>
<term>Mandibular</term>
<term>Mandibular symphysis</term>
<term>Medial process</term>
<term>Mentomeckelian</term>
<term>Molecular data</term>
<term>Monocuspid</term>
<term>Natural history</term>
<term>Natural selection</term>
<term>Occidozyga laevis</term>
<term>Occipitalis</term>
<term>Odontoid</term>
<term>Odontoid germs</term>
<term>Odontoids</term>
<term>Pathway</term>
<term>Pedicellate</term>
<term>Pedicellate bicuspid</term>
<term>Phylogenetic</term>
<term>Phylogenetic relationships</term>
<term>Platymantis</term>
<term>Platymantis vitiensis</term>
<term>Pyxicephalus</term>
<term>Pyxicephalus adspersus</term>
<term>Rana</term>
<term>Rana cancrivora</term>
<term>Rana corrugata</term>
<term>Rana limnocharis</term>
<term>Ranidae</term>
<term>Ranine</term>
<term>Ranine frogs</term>
<term>Relative fang length</term>
<term>Relative fang size</term>
<term>Relative fang sizes</term>
<term>Right mandible</term>
<term>Salta</term>
<term>Sexual dimorphism</term>
<term>Sexual selection</term>
<term>Single regression equation</term>
<term>Sphaerotheca</term>
<term>Sphaerotheca pluvialis</term>
<term>Subsigillata</term>
<term>Symphysis</term>
<term>Taxon</term>
<term>Trueb</term>
<term>Universidad nacional</term>
<term>Vitiensis</term>
<term>Zool</term>
</keywords>
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<front><div type="abstract" xml:lang="en">The anuran lower jaw is composed of three pairs of bones: dentaries, angulosplenials and mentomeckelians. Although the lower jaw is toothless, except in Gastrotheca guentheri, enlarged fangs or odontoids have evolved at least four times independently in some myobatrachids, hylids, ranids and leptodactylids through both parallel and convergent evolutionary events. Fangs seem to represent the single best design solution to enable an anuran to inflict a bite‐like wound, but the biological role of biting varies among species. Fangs are projections of the dentaries in ranids, but in the hylid frog Hemiphractus and in ceratophryine leptodactylids, they form a sinosteotic unit with the dentaries and mentomeckelians. Comparisons of morphology, behaviour and diet among frog taxa with enlarged fangs reveal that the fangs may be the result of either sexual or natural selection. Those fangs that evolved in response to sexual selection seem to be relatively larger than those that resulted of natural selection.</div>
</front>
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