Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. I. Variance and size components of bilateral variation

A set of cranial characters was examined in the fruit bats Rousettus egyptiacus and Eidolon helvum to compare trends and relative importance of major components of bilateral morphometric variation, and their relationship with character size. Using two-way, sides-by-individuals A N O V A , four compo...

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Detalles Bibliográficos
Autores: Juste, Javier, López-González, C., Strauss, R.E.
Tipo de recurso: artículo
Fecha de publicación:2001
País:España
Institución:Consejo Superior de Investigaciones Científicas (CSIC)
Repositorio:DIGITAL.CSIC. Repositorio Institucional del CSIC
OAI Identifier:oai:digital.csic.es:10261/49202
Acceso en línea:http://hdl.handle.net/10261/49202
Access Level:acceso abierto
Palabra clave:Asymmetry
Eidolon helvum
fruit bats
Gulf of Guinea
Rousettus egyptiacus
three-dimensional coordinates
variance components
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spelling Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. I. Variance and size components of bilateral variationJuste, JavierLópez-González, C.Strauss, R.E.AsymmetryEidolon helvumfruit batsGulf of GuineaRousettus egyptiacusthree-dimensional coordinatesvariance componentsA set of cranial characters was examined in the fruit bats Rousettus egyptiacus and Eidolon helvum to compare trends and relative importance of major components of bilateral morphometric variation, and their relationship with character size. Using two-way, sides-by-individuals A N O V A , four components of variation were estimated for each bilateral variable: individual variation (I), directional asymmetry (DA), non-directional asymmetry (NDA) and meas- urement error (E). Both species exhibit similar major trends of variation in asymmetry across characters, as shown by principal component analysis, using variance components as variables. Degree of interspecific congruence among characters was confirmed by a two-way A N O V A with species and variance components as fixed factors. Congruence of asymmetry patterns between species suggests that the concept of population asymmetry parameter (PAP) could be extended to higher hierarchies. PAPs above the species level may result from common mechanisms or similar developmental constraints acting on species’ buffering capacities and morphological integration processesPeer reviewedBlackwell Publishing201220122001info:eu-repo/semantics/articlehttp://purl.org/coar/resource_type/c_6501http://hdl.handle.net/10261/49202reponame:DIGITAL.CSIC. Repositorio Institucional del CSICinstname:Consejo Superior de Investigaciones Científicas (CSIC)Ingléshrttp://dx.doi.org/10.1046/j.1420-9101.2001.00298.xinfo:eu-repo/semantics/openAccessoai:digital.csic.es:10261/492022026-05-22T06:33:51Z
dc.title.none.fl_str_mv Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. I. Variance and size components of bilateral variation
title Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. I. Variance and size components of bilateral variation
spellingShingle Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. I. Variance and size components of bilateral variation
Juste, Javier
Asymmetry
Eidolon helvum
fruit bats
Gulf of Guinea
Rousettus egyptiacus
three-dimensional coordinates
variance components
title_short Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. I. Variance and size components of bilateral variation
title_full Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. I. Variance and size components of bilateral variation
title_fullStr Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. I. Variance and size components of bilateral variation
title_full_unstemmed Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. I. Variance and size components of bilateral variation
title_sort Analysis of asymmetries in the African fruit bats Eldolon helvum and Rousettus egyptlacus (Mammalia: Megachiroptera) from the islands of the Gulf of Guinea. I. Variance and size components of bilateral variation
dc.creator.none.fl_str_mv Juste, Javier
López-González, C.
Strauss, R.E.
author Juste, Javier
author_facet Juste, Javier
López-González, C.
Strauss, R.E.
author_role author
author2 López-González, C.
Strauss, R.E.
author2_role author
author
dc.subject.none.fl_str_mv Asymmetry
Eidolon helvum

fruit bats
Gulf of Guinea
Rousettus egyptiacus
three-dimensional coordinates
variance components
topic Asymmetry
Eidolon helvum
fruit bats
Gulf of Guinea
Rousettus egyptiacus
three-dimensional coordinates
variance components
description A set of cranial characters was examined in the fruit bats Rousettus egyptiacus and Eidolon helvum to compare trends and relative importance of major components of bilateral morphometric variation, and their relationship with character size. Using two-way, sides-by-individuals A N O V A , four components of variation were estimated for each bilateral variable: individual variation (I), directional asymmetry (DA), non-directional asymmetry (NDA) and meas- urement error (E). Both species exhibit similar major trends of variation in asymmetry across characters, as shown by principal component analysis, using variance components as variables. Degree of interspecific congruence among characters was confirmed by a two-way A N O V A with species and variance components as fixed factors. Congruence of asymmetry patterns between species suggests that the concept of population asymmetry parameter (PAP) could be extended to higher hierarchies. PAPs above the species level may result from common mechanisms or similar developmental constraints acting on species’ buffering capacities and morphological integration processes
publishDate 2001
dc.date.none.fl_str_mv 2001
2012
2012
dc.type.none.fl_str_mv info:eu-repo/semantics/article
http://purl.org/coar/resource_type/c_6501
format article
dc.identifier.none.fl_str_mv http://hdl.handle.net/10261/49202
url http://hdl.handle.net/10261/49202
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.relation.none.fl_str_mv hrttp://dx.doi.org/10.1046/j.1420-9101.2001.00298.x
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.publisher.none.fl_str_mv Blackwell Publishing
publisher.none.fl_str_mv Blackwell Publishing
dc.source.none.fl_str_mv reponame:DIGITAL.CSIC. Repositorio Institucional del CSIC
instname:Consejo Superior de Investigaciones Científicas (CSIC)
instname_str Consejo Superior de Investigaciones Científicas (CSIC)
reponame_str DIGITAL.CSIC. Repositorio Institucional del CSIC
collection DIGITAL.CSIC. Repositorio Institucional del CSIC
repository.name.fl_str_mv
repository.mail.fl_str_mv
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