A functional analysis of the primate masticatory system and the origin of the anthropoid post‐orbital septum
Identifieur interne : 006918 ( Istex/Curation ); précédent : 006917; suivant : 006919A functional analysis of the primate masticatory system and the origin of the anthropoid post‐orbital septum
Auteurs : Susan Marie Cachel [États-Unis]Source :
- American Journal of Physical Anthropology [ 0002-9483 ] ; 1979-01.
Descripteurs français
- Wicri :
- topic : écologie.
English descriptors
- KwdEn :
- Academic press, Adult body weight, Aethiops, Alouatta palliata, Anterior, Anterior dentition, Anterior fibers, Anterior portion, Anterior segment, Anterior temporalis, Anterior temporalis muscle, Anterior tooth, Anthropoid, Anthropoid septum, Aotus triuirgatus, Ascanius, Ateles, Ateles geoffroyi, Ateles paniscus, Atim, Atim index, Atim indices, Body length, Body size, Body weight, Cachel, Cacqjao rubicundus, Cartmill, Cebus, Cebus apella, Cebus capucinus, Cercocebus albigena, Cercopithecus, Cercopithecus aethiops, Cercopithecus ascanius, Cercopithecus diana, Cercopithecus neglectus, Cheirogaleus medius, Chicago press, Chiropotes satanas, Colobus, Colobus polykomos, Correlation coefficients, Cristatus, Cynocephalus, Dentition, Didelphis uirginiana, Ecology, Electromyographic, Electromyographic analysis, Electromyographic evidence, Electromyographic study, Erythrocebus patas, Extensive incisal preparation, Fateles geoffroyi, Female specimens, Fossa, Frugivorous, Fuscicollis, Gelada, Geoffroyi, Gorilla, Gorilla gorilla, High index, Hladik, Human subjects, Hylobates, Incisal, Incisor, Incisor occlusion, Macaca, Macaca mulatta, Male specimens, Mandrillus sphinx, Masseter, Masseter muscle, Masseter muscles, Mastication, Masticatory, Masticatory cycle, Masticatory muscles, Masticatory musculature, Maxillary, Mesiodistal, Mesiodistal span, Middle fibers, Miopithecus talapoin, Molar, Molar occlusion, Morphology, Mouton press, Mulatta, Muscle function, Napier, Natural history, Neglectus, Occlusion, Oral biol, Palliata, Paniscus, Papio, Papio cynocephalus, Pithecia, Pithecia pithecia, Polykomos, Pongo, Pongo pygmaeus, Posterior dentition, Posterior fibers, Posterior temporalis, Presbytis cristatus, Prey items, Primate, Primate mastication, Primates, Prosimian, Pygmaeus, Relative development, Relative importance, Rhinopithecus roxellanae, Rubicundus, Saguinus, Saguinus fuscicollis, Saimiri, Saimiri sciureus, Same population, Sciureus, Seasonality, Selection pressures, Septum, Skull length, Small children, Small vertebrates, Stomach contents, Susan marie cachel, Tarsius, Tarsius spectrum, Temporalis, Temporalis muscle, Theropithecus, Theropithecus gelada, Tupaia glis, Vertical stresses, Vitti.
- Teeft :
- Academic press, Adult body weight, Aethiops, Alouatta palliata, Anterior, Anterior dentition, Anterior fibers, Anterior portion, Anterior segment, Anterior temporalis, Anterior temporalis muscle, Anterior tooth, Anthropoid, Anthropoid septum, Aotus triuirgatus, Ascanius, Ateles, Ateles geoffroyi, Ateles paniscus, Atim, Atim index, Atim indices, Body length, Body size, Body weight, Cachel, Cacqjao rubicundus, Cartmill, Cebus, Cebus apella, Cebus capucinus, Cercocebus albigena, Cercopithecus, Cercopithecus aethiops, Cercopithecus ascanius, Cercopithecus diana, Cercopithecus neglectus, Cheirogaleus medius, Chicago press, Chiropotes satanas, Colobus, Colobus polykomos, Correlation coefficients, Cristatus, Cynocephalus, Dentition, Didelphis uirginiana, Ecology, Electromyographic, Electromyographic analysis, Electromyographic evidence, Electromyographic study, Erythrocebus patas, Extensive incisal preparation, Fateles geoffroyi, Female specimens, Fossa, Frugivorous, Fuscicollis, Gelada, Geoffroyi, Gorilla, Gorilla gorilla, High index, Hladik, Human subjects, Hylobates, Incisal, Incisor, Incisor occlusion, Macaca, Macaca mulatta, Male specimens, Mandrillus sphinx, Masseter, Masseter muscle, Masseter muscles, Mastication, Masticatory, Masticatory cycle, Masticatory muscles, Masticatory musculature, Maxillary, Mesiodistal, Mesiodistal span, Middle fibers, Miopithecus talapoin, Molar, Molar occlusion, Morphology, Mouton press, Mulatta, Muscle function, Napier, Natural history, Neglectus, Occlusion, Oral biol, Palliata, Paniscus, Papio, Papio cynocephalus, Pithecia, Pithecia pithecia, Polykomos, Pongo, Pongo pygmaeus, Posterior dentition, Posterior fibers, Posterior temporalis, Presbytis cristatus, Prey items, Primate, Primate mastication, Primates, Prosimian, Pygmaeus, Relative development, Relative importance, Rhinopithecus roxellanae, Rubicundus, Saguinus, Saguinus fuscicollis, Saimiri, Saimiri sciureus, Same population, Sciureus, Seasonality, Selection pressures, Septum, Skull length, Small children, Small vertebrates, Stomach contents, Susan marie cachel, Tarsius, Tarsius spectrum, Temporalis, Temporalis muscle, Theropithecus, Theropithecus gelada, Tupaia glis, Vertical stresses, Vitti.
Abstract
Study of the dry weights of primate and non‐primate masticatory musculature reveals a significant relationship between the Anterior Temporalis/Masseter ratio and the relative development of the anterior dentition. Available dietary information demonstrates that species emphasizing incisal preparation of food have a high AT/M index; species emphasizing molar occlusion have a low AT/M index. Utilizing this information, a model is presented of the origin of the anthropoid post‐orbital septum. Frugivory or extensive incisal preparation of food is causally related to the development of the post‐orbital septum, because diet can then create selection pressures for an increasingly tendinous and enlarging anterior segment of the temporalis muscle which requires additional bony areas of origin in the anterior temporal fossa. Cenozoic climatic oscillations leading to increasing seasonality may have been the triggering element in this model, because seasonality creates periods in which the availability of fruit is relatively predictable.
Url:
DOI: 10.1002/ajpa.1330500102
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<term>Anterior segment</term>
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<term>Anterior tooth</term>
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<term>Chiropotes satanas</term>
<term>Colobus</term>
<term>Colobus polykomos</term>
<term>Correlation coefficients</term>
<term>Cristatus</term>
<term>Cynocephalus</term>
<term>Dentition</term>
<term>Didelphis uirginiana</term>
<term>Ecology</term>
<term>Electromyographic</term>
<term>Electromyographic analysis</term>
<term>Electromyographic evidence</term>
<term>Electromyographic study</term>
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<term>Incisor</term>
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<term>Macaca mulatta</term>
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<term>Masseter muscle</term>
<term>Masseter muscles</term>
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<term>Oral biol</term>
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<term>Papio</term>
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<term>Posterior fibers</term>
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<term>Presbytis cristatus</term>
<term>Prey items</term>
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<term>Primate mastication</term>
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<term>Small children</term>
<term>Small vertebrates</term>
<term>Stomach contents</term>
<term>Susan marie cachel</term>
<term>Tarsius</term>
<term>Tarsius spectrum</term>
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<term>Temporalis muscle</term>
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<term>Theropithecus gelada</term>
<term>Tupaia glis</term>
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<term>Aethiops</term>
<term>Alouatta palliata</term>
<term>Anterior</term>
<term>Anterior dentition</term>
<term>Anterior fibers</term>
<term>Anterior portion</term>
<term>Anterior segment</term>
<term>Anterior temporalis</term>
<term>Anterior temporalis muscle</term>
<term>Anterior tooth</term>
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<term>Anthropoid septum</term>
<term>Aotus triuirgatus</term>
<term>Ascanius</term>
<term>Ateles</term>
<term>Ateles geoffroyi</term>
<term>Ateles paniscus</term>
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<term>Atim index</term>
<term>Atim indices</term>
<term>Body length</term>
<term>Body size</term>
<term>Body weight</term>
<term>Cachel</term>
<term>Cacqjao rubicundus</term>
<term>Cartmill</term>
<term>Cebus</term>
<term>Cebus apella</term>
<term>Cebus capucinus</term>
<term>Cercocebus albigena</term>
<term>Cercopithecus</term>
<term>Cercopithecus aethiops</term>
<term>Cercopithecus ascanius</term>
<term>Cercopithecus diana</term>
<term>Cercopithecus neglectus</term>
<term>Cheirogaleus medius</term>
<term>Chicago press</term>
<term>Chiropotes satanas</term>
<term>Colobus</term>
<term>Colobus polykomos</term>
<term>Correlation coefficients</term>
<term>Cristatus</term>
<term>Cynocephalus</term>
<term>Dentition</term>
<term>Didelphis uirginiana</term>
<term>Ecology</term>
<term>Electromyographic</term>
<term>Electromyographic analysis</term>
<term>Electromyographic evidence</term>
<term>Electromyographic study</term>
<term>Erythrocebus patas</term>
<term>Extensive incisal preparation</term>
<term>Fateles geoffroyi</term>
<term>Female specimens</term>
<term>Fossa</term>
<term>Frugivorous</term>
<term>Fuscicollis</term>
<term>Gelada</term>
<term>Geoffroyi</term>
<term>Gorilla</term>
<term>Gorilla gorilla</term>
<term>High index</term>
<term>Hladik</term>
<term>Human subjects</term>
<term>Hylobates</term>
<term>Incisal</term>
<term>Incisor</term>
<term>Incisor occlusion</term>
<term>Macaca</term>
<term>Macaca mulatta</term>
<term>Male specimens</term>
<term>Mandrillus sphinx</term>
<term>Masseter</term>
<term>Masseter muscle</term>
<term>Masseter muscles</term>
<term>Mastication</term>
<term>Masticatory</term>
<term>Masticatory cycle</term>
<term>Masticatory muscles</term>
<term>Masticatory musculature</term>
<term>Maxillary</term>
<term>Mesiodistal</term>
<term>Mesiodistal span</term>
<term>Middle fibers</term>
<term>Miopithecus talapoin</term>
<term>Molar</term>
<term>Molar occlusion</term>
<term>Morphology</term>
<term>Mouton press</term>
<term>Mulatta</term>
<term>Muscle function</term>
<term>Napier</term>
<term>Natural history</term>
<term>Neglectus</term>
<term>Occlusion</term>
<term>Oral biol</term>
<term>Palliata</term>
<term>Paniscus</term>
<term>Papio</term>
<term>Papio cynocephalus</term>
<term>Pithecia</term>
<term>Pithecia pithecia</term>
<term>Polykomos</term>
<term>Pongo</term>
<term>Pongo pygmaeus</term>
<term>Posterior dentition</term>
<term>Posterior fibers</term>
<term>Posterior temporalis</term>
<term>Presbytis cristatus</term>
<term>Prey items</term>
<term>Primate</term>
<term>Primate mastication</term>
<term>Primates</term>
<term>Prosimian</term>
<term>Pygmaeus</term>
<term>Relative development</term>
<term>Relative importance</term>
<term>Rhinopithecus roxellanae</term>
<term>Rubicundus</term>
<term>Saguinus</term>
<term>Saguinus fuscicollis</term>
<term>Saimiri</term>
<term>Saimiri sciureus</term>
<term>Same population</term>
<term>Sciureus</term>
<term>Seasonality</term>
<term>Selection pressures</term>
<term>Septum</term>
<term>Skull length</term>
<term>Small children</term>
<term>Small vertebrates</term>
<term>Stomach contents</term>
<term>Susan marie cachel</term>
<term>Tarsius</term>
<term>Tarsius spectrum</term>
<term>Temporalis</term>
<term>Temporalis muscle</term>
<term>Theropithecus</term>
<term>Theropithecus gelada</term>
<term>Tupaia glis</term>
<term>Vertical stresses</term>
<term>Vitti</term>
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<front><div type="abstract" xml:lang="en">Study of the dry weights of primate and non‐primate masticatory musculature reveals a significant relationship between the Anterior Temporalis/Masseter ratio and the relative development of the anterior dentition. Available dietary information demonstrates that species emphasizing incisal preparation of food have a high AT/M index; species emphasizing molar occlusion have a low AT/M index. Utilizing this information, a model is presented of the origin of the anthropoid post‐orbital septum. Frugivory or extensive incisal preparation of food is causally related to the development of the post‐orbital septum, because diet can then create selection pressures for an increasingly tendinous and enlarging anterior segment of the temporalis muscle which requires additional bony areas of origin in the anterior temporal fossa. Cenozoic climatic oscillations leading to increasing seasonality may have been the triggering element in this model, because seasonality creates periods in which the availability of fruit is relatively predictable.</div>
</front>
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