Hidden dichromatism in the Burrowing Parrot (Cyanoliseus patagonus) as revealed by spectrometric colour analysis

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Bird colour perception differs fundamentally from that of humans. Birds have more cone types in the retina, including UV or violet cones, which enable them to perceive a wider spectral range. Thus, human colour perception can be deceiving when assessing functional aspects of bird plumage coloration,...

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Autores principales: Masello, Juan F., Lubjuhn, Thomas, Quillfeldt, Petra
Lenguaje:Español
Publicado: 2009
Materias:
LORO BARRANQUERO
PATAGONIA
COLORACION BASADA EN PSITTACOFULVINAS
PSITTACOFULVINAS
DIFERENCIAS SEXUALES
DICROMATISMO SEXUAL
COLORACION ESTRUCTURAL
PSITTACOFULVIN-BASED COLORATION
STRUCTURAL COLORATION
SEXUAL DICHROMATISM
SEX DIFFERENCES
BURROWING PARROT
PSITTACOFULVINS
Acceso en línea:https://hdl.handle.net/20.500.12110/hornero_v024_n01_p047
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:hornero_v024_n01_p047
record_format dspace
spelling todo:hornero_v024_n01_p0472023-10-03T13:49:19Z Hidden dichromatism in the Burrowing Parrot (Cyanoliseus patagonus) as revealed by spectrometric colour analysis Dicromatismo sexual oculto en el loro barranquero (Cyanoliseus patagonus) revelado por medio de análisis espectrométricos Masello, Juan F. Lubjuhn, Thomas Quillfeldt, Petra LORO BARRANQUERO PATAGONIA COLORACION BASADA EN PSITTACOFULVINAS PSITTACOFULVINAS DIFERENCIAS SEXUALES DICROMATISMO SEXUAL COLORACION ESTRUCTURAL PSITTACOFULVIN-BASED COLORATION STRUCTURAL COLORATION SEXUAL DICHROMATISM SEX DIFFERENCES BURROWING PARROT PSITTACOFULVINS Bird colour perception differs fundamentally from that of humans. Birds have more cone types in the retina, including UV or violet cones, which enable them to perceive a wider spectral range. Thus, human colour perception can be deceiving when assessing functional aspects of bird plumage coloration, such as the intensity of sexual selection. In this study we measured reflectance spectra of different plumage regions of male and female Burrowing Parrot (Cyanoliseus patagonus) individuals. Although not obvious to human eyes, spectrometry revealed that adults are sexually dichromatic. Plumage regions with structure-based (blue) and structure-psittacofulvin pigment-based (green) coloration differed in achromatic brightness. In contrast, the psittacofulvin-based (red) region differed in spectral shape between the sexes. Thus, Burrowing Parrot is among the growing number of bird species which were formerly classed as sexually monochromatic based on human vision, but which are actually sexually dichromatic. La percepción del color por parte de las aves difiere esencialmente de la de los humanos. Las aves tienen más conos en su retina, incluyendo conos sensibles al ultravioleta y violeta, los que les permite percibir un rango espectral más amplio. Por lo tanto, la percepción humana de los colores puede engañar a la hora de evaluar aspectos funcionales del color del plumaje de las aves, tales como la intensidad de la selección sexual. En este trabajo se midieron los espectros de reflectancia de diferentes regiones del plumaje de machos y hembras de Loro Barranquero (Cyanoliseus patagonus). Si bien no resulta obvio a los ojos humanos, las mediciones espectrométricas revelaron que los adultos son sexualmente dicromáticos. Regiones del plumaje con coloración basada en la estructura (azul) o con color basado en una mezcla de estructura y psittacofulvinas (verde) difirieron en el brillo acromático. En cambio, la coloración basada en psittacofulvinas (rojo) difirió en la forma del espectro entre los sexos. Por lo tanto, el Loro Barranquero es una más de un creciente número de aves que, de acuerdo a la visión humana, fueron previamente clasificadas como sexualmente monocromáticas pero que, en realidad, son sexualmente dicromáticas. 2009-08 PDF Español 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_p047
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 Español
topic LORO BARRANQUERO
PATAGONIA
COLORACION BASADA EN PSITTACOFULVINAS
PSITTACOFULVINAS
DIFERENCIAS SEXUALES
DICROMATISMO SEXUAL
COLORACION ESTRUCTURAL
PSITTACOFULVIN-BASED COLORATION
STRUCTURAL COLORATION
SEXUAL DICHROMATISM
SEX DIFFERENCES
BURROWING PARROT
PSITTACOFULVINS
spellingShingle LORO BARRANQUERO
PATAGONIA
COLORACION BASADA EN PSITTACOFULVINAS
PSITTACOFULVINAS
DIFERENCIAS SEXUALES
DICROMATISMO SEXUAL
COLORACION ESTRUCTURAL
PSITTACOFULVIN-BASED COLORATION
STRUCTURAL COLORATION
SEXUAL DICHROMATISM
SEX DIFFERENCES
BURROWING PARROT
PSITTACOFULVINS
Masello, Juan F.
Lubjuhn, Thomas
Quillfeldt, Petra
Hidden dichromatism in the Burrowing Parrot (Cyanoliseus patagonus) as revealed by spectrometric colour analysis
topic_facet LORO BARRANQUERO
PATAGONIA
COLORACION BASADA EN PSITTACOFULVINAS
PSITTACOFULVINAS
DIFERENCIAS SEXUALES
DICROMATISMO SEXUAL
COLORACION ESTRUCTURAL
PSITTACOFULVIN-BASED COLORATION
STRUCTURAL COLORATION
SEXUAL DICHROMATISM
SEX DIFFERENCES
BURROWING PARROT
PSITTACOFULVINS
description Bird colour perception differs fundamentally from that of humans. Birds have more cone types in the retina, including UV or violet cones, which enable them to perceive a wider spectral range. Thus, human colour perception can be deceiving when assessing functional aspects of bird plumage coloration, such as the intensity of sexual selection. In this study we measured reflectance spectra of different plumage regions of male and female Burrowing Parrot (Cyanoliseus patagonus) individuals. Although not obvious to human eyes, spectrometry revealed that adults are sexually dichromatic. Plumage regions with structure-based (blue) and structure-psittacofulvin pigment-based (green) coloration differed in achromatic brightness. In contrast, the psittacofulvin-based (red) region differed in spectral shape between the sexes. Thus, Burrowing Parrot is among the growing number of bird species which were formerly classed as sexually monochromatic based on human vision, but which are actually sexually dichromatic.
author Masello, Juan F.
Lubjuhn, Thomas
Quillfeldt, Petra
author_facet Masello, Juan F.
Lubjuhn, Thomas
Quillfeldt, Petra
author_sort Masello, Juan F.
title Hidden dichromatism in the Burrowing Parrot (Cyanoliseus patagonus) as revealed by spectrometric colour analysis
title_short Hidden dichromatism in the Burrowing Parrot (Cyanoliseus patagonus) as revealed by spectrometric colour analysis
title_full Hidden dichromatism in the Burrowing Parrot (Cyanoliseus patagonus) as revealed by spectrometric colour analysis
title_fullStr Hidden dichromatism in the Burrowing Parrot (Cyanoliseus patagonus) as revealed by spectrometric colour analysis
title_full_unstemmed Hidden dichromatism in the Burrowing Parrot (Cyanoliseus patagonus) as revealed by spectrometric colour analysis
title_sort hidden dichromatism in the burrowing parrot (cyanoliseus patagonus) as revealed by spectrometric colour analysis
publishDate 2009
url https://hdl.handle.net/20.500.12110/hornero_v024_n01_p047
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AT lubjuhnthomas hiddendichromatismintheburrowingparrotcyanoliseuspatagonusasrevealedbyspectrometriccolouranalysis
AT quillfeldtpetra hiddendichromatismintheburrowingparrotcyanoliseuspatagonusasrevealedbyspectrometriccolouranalysis
AT masellojuanf dicromatismosexualocultoenellorobarranquerocyanoliseuspatagonusreveladopormediodeanalisisespectrometricos
AT lubjuhnthomas dicromatismosexualocultoenellorobarranquerocyanoliseuspatagonusreveladopormediodeanalisisespectrometricos
AT quillfeldtpetra dicromatismosexualocultoenellorobarranquerocyanoliseuspatagonusreveladopormediodeanalisisespectrometricos
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