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.
Facultad de Ciencias Naturales y Museo - Materia
-
Ciencias Naturales
Discriminant function
Morphometrics
Sex classification
Sexual dimorphism - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc-sa/4.0/
- Repositorio
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/83936
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The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensisMontalti, DiegoGraña Grilli, MaricelMaragliano, René E.Cassini, Guillermo HernánCiencias NaturalesDiscriminant functionMorphometricsSex classificationSexual dimorphismMonomorphic 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 <i>Phoenicopterus chilensis</i> 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.Facultad de Ciencias Naturales y Museo2012info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf851-855http://sedici.unlp.edu.ar/handle/10915/83936enginfo:eu-repo/semantics/altIdentifier/issn/1674-5507info:eu-repo/semantics/altIdentifier/doi/10.1093/czoolo/58.6.851info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc-sa/4.0/Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-09-29T11:16:05Zoai:sedici.unlp.edu.ar:10915/83936Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-09-29 11:16:05.632SEDICI (UNLP) - Universidad Nacional de La Platafalse |
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 Ciencias Naturales 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 |
Ciencias Naturales Discriminant function Morphometrics Sex classification Sexual dimorphism |
topic |
Ciencias Naturales Discriminant function Morphometrics Sex classification Sexual dimorphism |
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 <i>Phoenicopterus chilensis</i> 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. Facultad de Ciencias Naturales y Museo |
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 <i>Phoenicopterus chilensis</i> 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 |
dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo 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://sedici.unlp.edu.ar/handle/10915/83936 |
url |
http://sedici.unlp.edu.ar/handle/10915/83936 |
dc.language.none.fl_str_mv |
eng |
language |
eng |
dc.relation.none.fl_str_mv |
info:eu-repo/semantics/altIdentifier/issn/1674-5507 info:eu-repo/semantics/altIdentifier/doi/10.1093/czoolo/58.6.851 |
dc.rights.none.fl_str_mv |
info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
eu_rights_str_mv |
openAccess |
rights_invalid_str_mv |
http://creativecommons.org/licenses/by-nc-sa/4.0/ Creative Commons Attribution-NonCommercial-ShareAlike 4.0 International (CC BY-NC-SA 4.0) |
dc.format.none.fl_str_mv |
application/pdf 851-855 |
dc.source.none.fl_str_mv |
reponame:SEDICI (UNLP) instname:Universidad Nacional de La Plata instacron:UNLP |
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Universidad Nacional de La Plata |
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SEDICI (UNLP) - Universidad Nacional de La Plata |
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