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dc.contributor.author
Ercoli, Marcos Darío
dc.contributor.author
Alvarez, Alicia
dc.contributor.author
Moyano, Silvana Rocio
dc.date.available
2024-03-12T13:41:54Z
dc.date.issued
2023-06
dc.identifier.citation
Ercoli, Marcos Darío; Alvarez, Alicia; Moyano, Silvana Rocio; Masticatory myology of the llama (Lama glama, Camelidae) and comparisons with other camelids and euungulates; Wiley Blackwell Publishing, Inc; Journal of Anatomy; 243; 5; 6-2023; 770-785
dc.identifier.issn
0021-8782
dc.identifier.uri
http://hdl.handle.net/11336/230184
dc.description.abstract
Camelids are the only living representatives of the Suborder Tylopoda, and present a unique set of osteo-myological masticatory features, differing from all other extant euungulates. They combine selenodont dentition and rumination with a fused symphysis, and roughly plesiomorphic muscle proportions. Despite its potential relevance as an euungulate model in comparative anatomy studies, the available data is strikingly scarce. The present study represents the first description of the masticatory muscles of a Lamini, analyzing the functional morphology of Lama glama and other camelids in a comparative framework. Both sides of the head of three adult specimens from Argentinean Puna were dissected. Descriptions, illustrations, muscular maps, and weighing of all masticatory muscles were performed. Some facial muscles are also described. The myology of llamas confirms that camelids possess relatively large temporalis muscles, with Lama being less extreme than Camelus. This plesiomorphic feature is also recorded in suines and some basal euungulates. Conversely, the direction of the fibers of the M. temporalis is mainly horizontal, resembling grinding euungulates such as equids, pecorans, and some derived suines. Although the M. masseter of camelids and equids do not reach the particularly modified configuration of pecorans, in which it is rostrally extended and arranged horizontally, the posterior sectors of Mm. masseter superficialis and pterygoideus medialis have acquired relatively horizontal disposition in the former lineages, suitable for protraction. The pterygoidei complex presents several bundles, and its relative size is intermediate between suines and derived grinding euungulates. The whole masticatory muscles are relatively light when compared to jaw weight. The evolution of the masticatory muscles and chewing of camelids implied that grinding abilities were reached with less extreme modifications of the topography and/or proportions than pecoran ruminants and equids. A relatively large M. temporalis recruited as a powerful retractor during the power stroke is a key feature of camelids. The relaxed pressure on chewing derived from the acquisition of rumination explains the slenderer build masticatory musculature of camelids compared to other euungulates except ruminants.
dc.format
application/pdf
dc.language.iso
eng
dc.publisher
Wiley Blackwell Publishing, Inc
dc.rights
info:eu-repo/semantics/restrictedAccess
dc.rights.uri
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.subject
CAMELIDS
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DIET
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FUNCTIONAL MORPHOLOGY
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ZYGOMASSETERIC COMPLEX
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Otros Tópicos Biológicos
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Ciencias Biológicas
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CIENCIAS NATURALES Y EXACTAS
dc.title
Masticatory myology of the llama (Lama glama, Camelidae) and comparisons with other camelids and euungulates
dc.type
info:eu-repo/semantics/article
dc.type
info:ar-repo/semantics/artículo
dc.type
info:eu-repo/semantics/publishedVersion
dc.date.updated
2024-03-12T11:05:43Z
dc.identifier.eissn
1469-7580
dc.journal.volume
243
dc.journal.number
5
dc.journal.pagination
770-785
dc.journal.pais
Reino Unido
dc.description.fil
Fil: Ercoli, Marcos Darío. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina
dc.description.fil
Fil: Alvarez, Alicia. Universidad Nacional de Jujuy. Instituto de Ecorregiones Andinas. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Salta. Instituto de Ecorregiones Andinas; Argentina
dc.description.fil
Fil: Moyano, Silvana Rocio. Universidad Nacional de Jujuy. Facultad de Ciencias Agrarias. Centro de Estudios Ambientales Territoriales y Sociales; Argentina. Universidad Nacional de Tucuman. Instituto de Datacion y Arqueometria. - Universidad Nacional de Jujuy. Instituto de Datacion y Arqueometria. - Consejo Nacional de Investigaciones Cientificas y Tecnicas. Centro Cientifico Tecnologico Conicet - Saltajujuy. Instituto de Datacion y Arqueometria.; Argentina
dc.journal.title
Journal of Anatomy
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/url/https://onlinelibrary.wiley.com/doi/10.1111/joa.13891
dc.relation.alternativeid
info:eu-repo/semantics/altIdentifier/doi/http://dx.doi.org/10.1111/joa.13891
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