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

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...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Montalti, Diego, Graña Grilli, Maricel, Maragliano, René E., Cassini, Guillermo Hernán
Formato: Articulo
Lenguaje:Inglés
Publicado: 2012
Materias:
Ciencias Naturales
Discriminant function
Morphometrics
Sex classification
Sexual dimorphism
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/83936
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-83936
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Ciencias Naturales
Discriminant function
Morphometrics
Sex classification
Sexual dimorphism
spellingShingle Ciencias Naturales
Discriminant function
Morphometrics
Sex classification
Sexual dimorphism
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
topic_facet Ciencias Naturales
Discriminant function
Morphometrics
Sex classification
Sexual dimorphism
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.
format Articulo
Articulo
author Montalti, Diego
Graña Grilli, Maricel
Maragliano, René E.
Cassini, Guillermo Hernán
author_facet Montalti, Diego
Graña Grilli, Maricel
Maragliano, René E.
Cassini, Guillermo Hernán
author_sort Montalti, Diego
title The reliability of morphometric discriminant functions in determining the sex of Chilean flamingos Phoenicopterus chilensis
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 reliability of morphometric discriminant functions in determining the sex of chilean flamingos phoenicopterus chilensis
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/83936
work_keys_str_mv AT montaltidiego thereliabilityofmorphometricdiscriminantfunctionsindeterminingthesexofchileanflamingosphoenicopteruschilensis
AT granagrillimaricel thereliabilityofmorphometricdiscriminantfunctionsindeterminingthesexofchileanflamingosphoenicopteruschilensis
AT maraglianorenee thereliabilityofmorphometricdiscriminantfunctionsindeterminingthesexofchileanflamingosphoenicopteruschilensis
AT cassiniguillermohernan thereliabilityofmorphometricdiscriminantfunctionsindeterminingthesexofchileanflamingosphoenicopteruschilensis
AT montaltidiego reliabilityofmorphometricdiscriminantfunctionsindeterminingthesexofchileanflamingosphoenicopteruschilensis
AT granagrillimaricel reliabilityofmorphometricdiscriminantfunctionsindeterminingthesexofchileanflamingosphoenicopteruschilensis
AT maraglianorenee reliabilityofmorphometricdiscriminantfunctionsindeterminingthesexofchileanflamingosphoenicopteruschilensis
AT cassiniguillermohernan reliabilityofmorphometricdiscriminantfunctionsindeterminingthesexofchileanflamingosphoenicopteruschilensis
bdutipo_str Repositorios
_version_ 1764820488201175044

Ejemplares similares