The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis

Autores
Montalti, Diego; Graña Grilli, Maricel; Maragliano, René E.; Cassini, Guillermo Hernán
Año de publicación
2012
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
Monomorphic birds cannot be sexed visually and discriminant functions on the basis of external morphological variations are frequently used. Our objective was to evaluate the reliability of sex classification functions created from structural measurements of Chilean flamingos Phoenicopterus chilensis museum skins for the gender assignment of live birds. Five meas-urements were used to develop four discriminant functions: culmen, bill height and width, tarsus length and middle toe claw. The functions were tested on a sample of live flamingos from a zoo. The best classification for museum flamingos was given by a function using tarsus length, bill width and middle toe claw (97%). However, this function did not give the best classification for the zoo-based flamingos (81%) which had the best sex assignment by a function including measurements of tarsus, culmen and bill height and width (85%). This shows that a function giving good results in the sample from which it originated may not be as good when applied to another group of animals. Our study emphasizes the need for assessing the accuracy of a function by testing it with other methods to ensure its suitability when being applied.
Fil: Montalti, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; Argentina
Fil: Graña Grilli, Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Maragliano, René E.. Jardín Zoológico de La Plata; Argentina
Fil: Cassini, Guillermo Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
Materia
DISCRIMINANT FUNCTION
MORPHOMETRICS
SEX CLASSIFICATION
SEXUAL DIMORPHISM
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/104271
Acceder
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network_name_str CONICET Digital (CONICET)
spelling The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensisMontalti, DiegoGraña Grilli, MaricelMaragliano, René E.Cassini, Guillermo HernánDISCRIMINANT FUNCTIONMORPHOMETRICSSEX CLASSIFICATIONSEXUAL DIMORPHISMhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1Monomorphic birds cannot be sexed visually and discriminant functions on the basis of external morphological variations are frequently used. Our objective was to evaluate the reliability of sex classification functions created from structural measurements of Chilean flamingos Phoenicopterus chilensis museum skins for the gender assignment of live birds. Five meas-urements were used to develop four discriminant functions: culmen, bill height and width, tarsus length and middle toe claw. The functions were tested on a sample of live flamingos from a zoo. The best classification for museum flamingos was given by a function using tarsus length, bill width and middle toe claw (97%). However, this function did not give the best classification for the zoo-based flamingos (81%) which had the best sex assignment by a function including measurements of tarsus, culmen and bill height and width (85%). This shows that a function giving good results in the sample from which it originated may not be as good when applied to another group of animals. Our study emphasizes the need for assessing the accuracy of a function by testing it with other methods to ensure its suitability when being applied.Fil: Montalti, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; ArgentinaFil: Graña Grilli, Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; ArgentinaFil: Maragliano, René E.. Jardín Zoológico de La Plata; ArgentinaFil: Cassini, Guillermo Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; ArgentinaChinese Academy of Sciences2012-12-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/104271Montalti, Diego; Graña Grilli, Maricel; Maragliano, René E.; Cassini, Guillermo Hernán; The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis; Chinese Academy of Sciences; Current Zoology; 58; 6; 1-12-2012; 851-8551674-5507CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/cz/article/58/6/851/1845112info:eu-repo/semantics/altIdentifier/doi/10.1093/czoolo/58.6.851info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-29T09:37:10Zoai:ri.conicet.gov.ar:11336/104271instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-29 09:37:10.868CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis
title The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis
spellingShingle The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis
Montalti, Diego
DISCRIMINANT FUNCTION
MORPHOMETRICS
SEX CLASSIFICATION
SEXUAL DIMORPHISM
title_short The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis
title_full The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis
title_fullStr The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis
title_full_unstemmed The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis
title_sort The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis
dc.creator.none.fl_str_mv Montalti, Diego
Graña Grilli, Maricel
Maragliano, René E.
Cassini, Guillermo Hernán
author Montalti, Diego
author_facet Montalti, Diego
Graña Grilli, Maricel
Maragliano, René E.
Cassini, Guillermo Hernán
author_role author
author2 Graña Grilli, Maricel
Maragliano, René E.
Cassini, Guillermo Hernán
author2_role author
author
author
dc.subject.none.fl_str_mv DISCRIMINANT FUNCTION
MORPHOMETRICS
SEX CLASSIFICATION
SEXUAL DIMORPHISM
topic DISCRIMINANT FUNCTION
MORPHOMETRICS
SEX CLASSIFICATION
SEXUAL DIMORPHISM
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv Monomorphic birds cannot be sexed visually and discriminant functions on the basis of external morphological variations are frequently used. Our objective was to evaluate the reliability of sex classification functions created from structural measurements of Chilean flamingos Phoenicopterus chilensis museum skins for the gender assignment of live birds. Five meas-urements were used to develop four discriminant functions: culmen, bill height and width, tarsus length and middle toe claw. The functions were tested on a sample of live flamingos from a zoo. The best classification for museum flamingos was given by a function using tarsus length, bill width and middle toe claw (97%). However, this function did not give the best classification for the zoo-based flamingos (81%) which had the best sex assignment by a function including measurements of tarsus, culmen and bill height and width (85%). This shows that a function giving good results in the sample from which it originated may not be as good when applied to another group of animals. Our study emphasizes the need for assessing the accuracy of a function by testing it with other methods to ensure its suitability when being applied.
Fil: Montalti, Diego. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - La Plata; Argentina. Universidad Nacional de La Plata. Facultad de Ciencias Naturales y Museo. División Zoología de Vertebrados; Argentina
Fil: Graña Grilli, Maricel. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina. Ministerio de Relaciones Exteriores, Comercio Interno y Culto. Dirección Nacional del Antártico. Instituto Antártico Argentino; Argentina
Fil: Maragliano, René E.. Jardín Zoológico de La Plata; Argentina
Fil: Cassini, Guillermo Hernán. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Parque Centenario. Museo Argentino de Ciencias Naturales "Bernardino Rivadavia"; Argentina. Universidad Nacional de Luján. Departamento de Ciencias Básicas; Argentina
description Monomorphic birds cannot be sexed visually and discriminant functions on the basis of external morphological variations are frequently used. Our objective was to evaluate the reliability of sex classification functions created from structural measurements of Chilean flamingos Phoenicopterus chilensis museum skins for the gender assignment of live birds. Five meas-urements were used to develop four discriminant functions: culmen, bill height and width, tarsus length and middle toe claw. The functions were tested on a sample of live flamingos from a zoo. The best classification for museum flamingos was given by a function using tarsus length, bill width and middle toe claw (97%). However, this function did not give the best classification for the zoo-based flamingos (81%) which had the best sex assignment by a function including measurements of tarsus, culmen and bill height and width (85%). This shows that a function giving good results in the sample from which it originated may not be as good when applied to another group of animals. Our study emphasizes the need for assessing the accuracy of a function by testing it with other methods to ensure its suitability when being applied.
publishDate 2012
dc.date.none.fl_str_mv 2012-12-01
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/104271
Montalti, Diego; Graña Grilli, Maricel; Maragliano, René E.; Cassini, Guillermo Hernán; The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis; Chinese Academy of Sciences; Current Zoology; 58; 6; 1-12-2012; 851-855
1674-5507
CONICET Digital
CONICET
url http://hdl.handle.net/11336/104271
identifier_str_mv Montalti, Diego; Graña Grilli, Maricel; Maragliano, René E.; Cassini, Guillermo Hernán; The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis; Chinese Academy of Sciences; Current Zoology; 58; 6; 1-12-2012; 851-855
1674-5507
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://academic.oup.com/cz/article/58/6/851/1845112
info:eu-repo/semantics/altIdentifier/doi/10.1093/czoolo/58.6.851
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Chinese Academy of Sciences
publisher.none.fl_str_mv Chinese Academy of Sciences
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.069144

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