Sexual size dimorphism in Black-Browed Albatross (Diomedea melanophris) incidentally killed during longline operations

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Black-Browed Albatross (Diomedea melanophris) displays little sexual dimorphism and although males are usually larger than females, sexing birds by direct observation is difficult. We evaluated sexual size dimorphism in this species and provided a reliable method to predict the sex of measured birds...

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Autores principales: Gandini, Patricia Alejandra, Frere, Esteban, García, M. Fernanda, Seco Pon, Juan P.
Formato: Artículo publishedVersion
Lenguaje:Español
Publicado: Aves Argentinas. Asociación Ornitológica del Plata 2009
Materias:
ALBATROS CEJA NEGRA
ANALISIS DISCRIMINANTE
SEXADO
DIMORFISMO SEXUAL DE TAMAÑO CORPORAL
BLACK-BROWED ALBATROSS
DISCRIMINANT ANALYSIS
SEXUAL SIZE DIMORPHISM
SEXING
Acceso en línea:https://hdl.handle.net/20.500.12110/hornero_v024_n01_p043
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id hornero:hornero_v024_n01_p043
record_format dspace
spelling hornero:hornero_v024_n01_p0432023-09-08T19:06:21Z Sexual size dimorphism in Black-Browed Albatross (Diomedea melanophris) incidentally killed during longline operations Dimorfismo sexual del tamaño corporal en albatros ceja negra (Diomedea melanophris) capturados incidentalmente durante las operaciones de palangre Hornero (en línea) 2009;01(024):043-046 Gandini, Patricia Alejandra Frere, Esteban García, M. Fernanda Seco Pon, Juan P. ALBATROS CEJA NEGRA ANALISIS DISCRIMINANTE SEXADO DIMORFISMO SEXUAL DE TAMAÑO CORPORAL BLACK-BROWED ALBATROSS DISCRIMINANT ANALYSIS SEXUAL SIZE DIMORPHISM SEXING Black-Browed Albatross (Diomedea melanophris) displays little sexual dimorphism and although males are usually larger than females, sexing birds by direct observation is difficult. We evaluated sexual size dimorphism in this species and provided a reliable method to predict the sex of measured birds. Discriminant Analysis of six morphometric measurements of adult birds indicated that only three variables (bill depth, head width and nape) were the most accurate variables to use in a discriminant function model, predicting sex with 87% of reliability. El Albatros Ceja Negra (Diomedea melanophris) muestra un escaso dimorfismo sexual y aunque generalmente los machos son más grandes que las hembras el sexado por observación directa puede ser difícil. Se evaluó el dimorfismo sexual del tamaño corporal en esta especie con un método confiable para predecir el sexo a partir de mediciones de las aves. El Análisis Discriminante aplicado a seis caracteres morfométricos tomados en individuos adultos indicó que solo tres de las variables (ancho del pico, ancho de la cabeza y la nuca) son las más precisas para utilizar en una función discriminante, prediciendo el sexo con un 87% de exactitud. Aves Argentinas. Asociación Ornitológica del Plata 2009-08 info:ar-repo/semantics/artículo info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf spa info:eu-repo/semantics/openAccess https://creativecommons.org/licenses/by-nc-sa/2.5/ar https://hdl.handle.net/20.500.12110/hornero_v024_n01_p043
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
language Español
orig_language_str_mv spa
topic ALBATROS CEJA NEGRA
ANALISIS DISCRIMINANTE
SEXADO
DIMORFISMO SEXUAL DE TAMAÑO CORPORAL
BLACK-BROWED ALBATROSS
DISCRIMINANT ANALYSIS
SEXUAL SIZE DIMORPHISM
SEXING
spellingShingle ALBATROS CEJA NEGRA
ANALISIS DISCRIMINANTE
SEXADO
DIMORFISMO SEXUAL DE TAMAÑO CORPORAL
BLACK-BROWED ALBATROSS
DISCRIMINANT ANALYSIS
SEXUAL SIZE DIMORPHISM
SEXING
Gandini, Patricia Alejandra
Frere, Esteban
García, M. Fernanda
Seco Pon, Juan P.
Sexual size dimorphism in Black-Browed Albatross (Diomedea melanophris) incidentally killed during longline operations
topic_facet ALBATROS CEJA NEGRA
ANALISIS DISCRIMINANTE
SEXADO
DIMORFISMO SEXUAL DE TAMAÑO CORPORAL
BLACK-BROWED ALBATROSS
DISCRIMINANT ANALYSIS
SEXUAL SIZE DIMORPHISM
SEXING
description Black-Browed Albatross (Diomedea melanophris) displays little sexual dimorphism and although males are usually larger than females, sexing birds by direct observation is difficult. We evaluated sexual size dimorphism in this species and provided a reliable method to predict the sex of measured birds. Discriminant Analysis of six morphometric measurements of adult birds indicated that only three variables (bill depth, head width and nape) were the most accurate variables to use in a discriminant function model, predicting sex with 87% of reliability.
format Artículo
Artículo
publishedVersion
author Gandini, Patricia Alejandra
Frere, Esteban
García, M. Fernanda
Seco Pon, Juan P.
author_facet Gandini, Patricia Alejandra
Frere, Esteban
García, M. Fernanda
Seco Pon, Juan P.
author_sort Gandini, Patricia Alejandra
title Sexual size dimorphism in Black-Browed Albatross (Diomedea melanophris) incidentally killed during longline operations
title_short Sexual size dimorphism in Black-Browed Albatross (Diomedea melanophris) incidentally killed during longline operations
title_full Sexual size dimorphism in Black-Browed Albatross (Diomedea melanophris) incidentally killed during longline operations
title_fullStr Sexual size dimorphism in Black-Browed Albatross (Diomedea melanophris) incidentally killed during longline operations
title_full_unstemmed Sexual size dimorphism in Black-Browed Albatross (Diomedea melanophris) incidentally killed during longline operations
title_sort sexual size dimorphism in black-browed albatross (diomedea melanophris) incidentally killed during longline operations
publisher Aves Argentinas. Asociación Ornitológica del Plata
publishDate 2009
url https://hdl.handle.net/20.500.12110/hornero_v024_n01_p043
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