Skull growth in equids beyond domestication

Te size of body parts often co-vary through exponential scaling, this is known as allometry. Allometric changes are important to the generation of morphological diversity. To make inferences regarding the evolved responses in allometry to artifciial selection in the genus Equus, we compared allometr...

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Autor: Parés Casanova, Pere-Miquel
Formato: artículo
Estado:Versión publicada
Fecha de publicación:2018
País:España
Recursos:Universitat de Lleida (UdL)
Repositorio:Repositori Obert UdL
OAI Identifier:oai:repositori.udl.cat:10459.1/64984
Acesso em linha:https://doi.org/10.15761/AHDVS.1000134
http://hdl.handle.net/10459.1/64984
Access Level:acceso abierto
Palavra-chave:Allometry
Dolicocephaly
Equus caballus
Head size allometry
Ontogeny
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spelling Skull growth in equids beyond domesticationParés Casanova, Pere-MiquelAllometryDolicocephalyEquus caballusHead size allometryOntogenyTe size of body parts often co-vary through exponential scaling, this is known as allometry. Allometric changes are important to the generation of morphological diversity. To make inferences regarding the evolved responses in allometry to artifciial selection in the genus Equus, we compared allometric parameters (slope and intercept) among 18 domestic breeds (11 for horses and 6 for donkeys) and 7 wild species, attempting to interpret the dfferences in allometric parameters (body length, withers height and head length). Te allometric values were not different among domestic equids. Breeds of similar sizes have similar head lengths. The elongation of head length is related to overall body size, indicating that allometry was invariant and did not change under specific selection in the breed formation.Head elongation (dolicocephaly) is probably focused on the preorbital region (dolicoprosopial) rather than on basicranial region. A remarkably higher correlation among donkey breeds can be explained by its strong similar morphological evolution. These findings provide evidence that changes in the allometry pattern point to modifications of ontogenetic processes derived from breeds differentiation and evolution. Further analysis should focus on the relationship between ancestral ontogeny and adult morphology in equids.OAT - Open Access Text2018info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionapplication/pdfhttps://doi.org/10.15761/AHDVS.1000134http://hdl.handle.net/10459.1/64984reponame:Repositori Obert UdL instname:Universitat de Lleida (UdL)InglésReproducció del document publicat a: https://doi.org/10.15761/AHDVS.1000134Animal Husbandry, Dairy and Veterinary Science, 2018, vol. 2, num. 3, p. 1-3cc-by, (c) Parés Casanova et al., 2018info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by/4.0/oai:repositori.udl.cat:10459.1/649842026-06-24T12:42:17Z
dc.title.none.fl_str_mv Skull growth in equids beyond domestication
title Skull growth in equids beyond domestication
spellingShingle Skull growth in equids beyond domestication
Parés Casanova, Pere-Miquel
Allometry
Dolicocephaly
Equus caballus
Head size allometry
Ontogeny
title_short Skull growth in equids beyond domestication
title_full Skull growth in equids beyond domestication
title_fullStr Skull growth in equids beyond domestication
title_full_unstemmed Skull growth in equids beyond domestication
title_sort Skull growth in equids beyond domestication
dc.creator.none.fl_str_mv Parés Casanova, Pere-Miquel
author Parés Casanova, Pere-Miquel
author_facet Parés Casanova, Pere-Miquel
author_role author
dc.subject.none.fl_str_mv Allometry
Dolicocephaly
Equus caballus
Head size allometry
Ontogeny
topic Allometry
Dolicocephaly
Equus caballus
Head size allometry
Ontogeny
description Te size of body parts often co-vary through exponential scaling, this is known as allometry. Allometric changes are important to the generation of morphological diversity. To make inferences regarding the evolved responses in allometry to artifciial selection in the genus Equus, we compared allometric parameters (slope and intercept) among 18 domestic breeds (11 for horses and 6 for donkeys) and 7 wild species, attempting to interpret the dfferences in allometric parameters (body length, withers height and head length). Te allometric values were not different among domestic equids. Breeds of similar sizes have similar head lengths. The elongation of head length is related to overall body size, indicating that allometry was invariant and did not change under specific selection in the breed formation.Head elongation (dolicocephaly) is probably focused on the preorbital region (dolicoprosopial) rather than on basicranial region. A remarkably higher correlation among donkey breeds can be explained by its strong similar morphological evolution. These findings provide evidence that changes in the allometry pattern point to modifications of ontogenetic processes derived from breeds differentiation and evolution. Further analysis should focus on the relationship between ancestral ontogeny and adult morphology in equids.
publishDate 2018
dc.date.none.fl_str_mv 2018
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv https://doi.org/10.15761/AHDVS.1000134
http://hdl.handle.net/10459.1/64984
url https://doi.org/10.15761/AHDVS.1000134
http://hdl.handle.net/10459.1/64984
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv Reproducció del document publicat a: https://doi.org/10.15761/AHDVS.1000134
Animal Husbandry, Dairy and Veterinary Science, 2018, vol. 2, num. 3, p. 1-3
dc.rights.none.fl_str_mv cc-by, (c) Parés Casanova et al., 2018
info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by/4.0/
rights_invalid_str_mv cc-by, (c) Parés Casanova et al., 2018
https://creativecommons.org/licenses/by/4.0/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv OAT - Open Access Text
publisher.none.fl_str_mv OAT - Open Access Text
dc.source.none.fl_str_mv reponame:Repositori Obert UdL
instname:Universitat de Lleida (UdL)
instname_str Universitat de Lleida (UdL)
reponame_str Repositori Obert UdL
collection Repositori Obert UdL
repository.name.fl_str_mv
repository.mail.fl_str_mv
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