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Structural and functional comparison of the proboscis between tapirs and other extant and extinct vertebrates

Identifieur interne : 002882 ( Main/Exploration ); précédent : 002881; suivant : 002883

Structural and functional comparison of the proboscis between tapirs and other extant and extinct vertebrates

Auteurs : Antoni V. Milewski [Afrique du Sud] ; Ellen S. Dierenfeld [États-Unis]

Source :

Integrative Zoology [ 1749-4877 ] ; 2013-03.

RBID : ISTEX:FA29EF657719CDB280ADA2992EFEACE98DDE0557

Descripteurs français

Wicri :
- topic : Zoologie.

English descriptors

KwdEn :
- Alces, Alces alces, Breda, Cape town, Cartilaginous, Clifford witmer, Dentition, Directional olfaction, Elephant, Elephant seals, Extensible tongue, External nares, Extinct, Food items, Homology, Incisor, Iszs, Joint narial, Labial, Lineage, Lower jaws, Mammal, Narial, Narial extension, Narial extension overhangs, Narial extensions, Narial structures, Naris, Nasal, Nasal bones, Nasal passages, Novel narial anatomy, Nowak, Olfaction, Order proboscidea, Other vertebrates, Proboscidean, Proboscis, Proboscis monkey, Saiga, Saiga tatarica, Shoshani, Snout, Tapir, Tapir proboscis, True proboscis, Upper labial musculature, Vertebrate, Water conservation, Wiley publishing asia, Witmer, Zoology.
Teeft :
- Alces, Alces alces, Breda, Cape town, Cartilaginous, Clifford witmer, Dentition, Directional olfaction, Elephant, Elephant seals, Extensible tongue, External nares, Extinct, Food items, Homology, Incisor, Iszs, Joint narial, Labial, Lineage, Lower jaws, Mammal, Narial, Narial extension, Narial extension overhangs, Narial extensions, Narial structures, Naris, Nasal, Nasal bones, Nasal passages, Novel narial anatomy, Nowak, Olfaction, Order proboscidea, Other vertebrates, Proboscidean, Proboscis, Proboscis monkey, Saiga, Saiga tatarica, Shoshani, Snout, Tapir, Tapir proboscis, True proboscis, Upper labial musculature, Vertebrate, Water conservation, Wiley publishing asia, Witmer, Zoology.

Abstract

Tapirs (Perissodactyla: Tapiridae) are the only living vertebrates, beyond the order Proboscidea, found to possess a true proboscis, defined as a flexible tubular extension of the joint narial and upper labial musculature that serves, at least in part, to grasp food. Tapirs show only partial homology and analogy with elephants in the narial and upper labial structures, as well as in the skull bones and teeth. However, superficially similar extensions in other extant vertebrates differ greatly in anatomy and function. Therefore, they deserve new names: prorhiscis (e.g. Mammalia: Saiga tatarica), prorhinosis (e.g. Chondrichthyes: Callorhinchus spp.), prorhynchis (e.g. Osteichthyes: Campylomormyrus spp.) and progeneiontis (e.g. Osteichthyes: Gnathonemus spp.). Among non‐mammalian vertebrates, no bird or reptile is known to possess a proboscis. Among fishes, there are various extensions of the rostrum, jaws, ‘nose’ and ‘chin’ that lack the required narial involvement. The skulls of extinct mammals within (e.g. deinotheres) and beyond (e.g. astrapotheres) the Proboscidea confirm that a proboscis evolved independently in several mammalian lineages before the Pliocene. This convergence with tapirs presumably reflects, in part, the advantages of concentrating the olfactory sensor on what is, effectively, the tip of a long mobile upper lip. However, the proboscis does not appear to have arisen de novo in any vertebrate post‐Pliocene, and its continued evolution has apparently depended on the further development of its length, flexibility and innervations, as epitomized by elephants.

Url:

https://api.istex.fr/document/FA29EF657719CDB280ADA2992EFEACE98DDE0557/fulltext/pdf

DOI: 10.1111/j.1749-4877.2012.00315.x

Affiliations:

Links toward previous steps (curation, corpus...)

to stream Istex, to step Corpus: 007B85
to stream Istex, to step Curation: 007B85
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to stream Main, to step Curation: 002882

Le document en format XML

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<term>Narial extension overhangs</term>
<term>Narial extensions</term>
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<term>Nasal bones</term>
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<term>Other vertebrates</term>
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<front><div type="abstract" xml:lang="en">Tapirs (Perissodactyla: Tapiridae) are the only living vertebrates, beyond the order Proboscidea, found to possess a true proboscis, defined as a flexible tubular extension of the joint narial and upper labial musculature that serves, at least in part, to grasp food. Tapirs show only partial homology and analogy with elephants in the narial and upper labial structures, as well as in the skull bones and teeth. However, superficially similar extensions in other extant vertebrates differ greatly in anatomy and function. Therefore, they deserve new names: prorhiscis (e.g. Mammalia: Saiga tatarica), prorhinosis (e.g. Chondrichthyes: Callorhinchus spp.), prorhynchis (e.g. Osteichthyes: Campylomormyrus spp.) and progeneiontis (e.g. Osteichthyes: Gnathonemus spp.). Among non‐mammalian vertebrates, no bird or reptile is known to possess a proboscis. Among fishes, there are various extensions of the rostrum, jaws, ‘nose’ and ‘chin’ that lack the required narial involvement. The skulls of extinct mammals within (e.g. deinotheres) and beyond (e.g. astrapotheres) the Proboscidea confirm that a proboscis evolved independently in several mammalian lineages before the Pliocene. This convergence with tapirs presumably reflects, in part, the advantages of concentrating the olfactory sensor on what is, effectively, the tip of a long mobile upper lip. However, the proboscis does not appear to have arisen de novo in any vertebrate post‐Pliocene, and its continued evolution has apparently depended on the further development of its length, flexibility and innervations, as epitomized by elephants.</div>
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Structural and functional comparison of the proboscis between tapirs and other extant and extinct vertebrates

Structural and functional comparison of the proboscis between tapirs and other extant and extinct vertebrates

Source :

Descripteurs français

English descriptors

Abstract

Links toward previous steps (curation, corpus...)

Le document en format XML

Pour manipuler ce document sous Unix (Dilib)

Pour mettre un lien sur cette page dans le réseau Wicri