Differences in morphology and colour pattern of shiny cowbird (Molothrus bonariensis) eggs found in nests of two hosts

Genetic differentiation among shiny cowbird (Molothrus bonariensis) females that use different hosts indicates that in this brood parasite, host use is not random at an individual level. We tested whether there exist differences in morphology and coloration between eggs of shiny cowbirds laid in the...

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Autores principales:	de la Colina, María Alicia, Mahler, Bettina, Reboreda, Juan Carlos
Publicado:	2011
Materias:	Brood parasitism Egg morphology Eggshell spotting color egg genetic differentiation hemoparasite host preference morphology nest reflectance songbird videography Mimus saturninus Molothrus bonariensis Troglodytes Troglodytes aedon Troglodytinae
Acceso en línea:	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244066_v102_n4_p838_DeLaColina http://hdl.handle.net/20.500.12110/paper_00244066_v102_n4_p838_DeLaColina
Aporte de:	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

id	paper:paper_00244066_v102_n4_p838_DeLaColina
record_format	dspace
spelling	paper:paper_00244066_v102_n4_p838_DeLaColina2023-06-08T14:52:11Z Differences in morphology and colour pattern of shiny cowbird (Molothrus bonariensis) eggs found in nests of two hosts de la Colina, María Alicia Mahler, Bettina Reboreda, Juan Carlos Brood parasitism Egg morphology Eggshell spotting color egg genetic differentiation hemoparasite host preference morphology nest reflectance songbird videography Mimus saturninus Molothrus bonariensis Troglodytes Troglodytes aedon Troglodytinae Genetic differentiation among shiny cowbird (Molothrus bonariensis) females that use different hosts indicates that in this brood parasite, host use is not random at an individual level. We tested whether there exist differences in morphology and coloration between eggs of shiny cowbirds laid in the nests of two different hosts, the chalk-browed mockingbird (Mimus saturninus) and the house wren (Troglodytes aedon). We took morphometric measures of shiny cowbird eggs found in nests of mockingbirds and wrens and analysed their coloration using digital photography and reflectance spectrometry. We found that shiny cowbird eggs found in mockingbird nests were wider and more asymmetric than those found in wren nests. In addition, cowbird eggs coming from mockingbird nests were brighter and had higher relative red reflectance than those coming from wren nests. Our results show that shiny cowbird eggs laid in nests of two different hosts vary in shape and background colour, but not in spotting pattern. © 2011 The Linnean Society of London. Fil:De La Colina, M.A. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Mahler, B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Reboreda, J.C. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. 2011 https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244066_v102_n4_p838_DeLaColina http://hdl.handle.net/20.500.12110/paper_00244066_v102_n4_p838_DeLaColina
institution	Universidad de Buenos Aires
institution_str	I-28
repository_str	R-134
collection	Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic	Brood parasitism Egg morphology Eggshell spotting color egg genetic differentiation hemoparasite host preference morphology nest reflectance songbird videography Mimus saturninus Molothrus bonariensis Troglodytes Troglodytes aedon Troglodytinae
spellingShingle	Brood parasitism Egg morphology Eggshell spotting color egg genetic differentiation hemoparasite host preference morphology nest reflectance songbird videography Mimus saturninus Molothrus bonariensis Troglodytes Troglodytes aedon Troglodytinae de la Colina, María Alicia Mahler, Bettina Reboreda, Juan Carlos Differences in morphology and colour pattern of shiny cowbird (Molothrus bonariensis) eggs found in nests of two hosts
topic_facet	Brood parasitism Egg morphology Eggshell spotting color egg genetic differentiation hemoparasite host preference morphology nest reflectance songbird videography Mimus saturninus Molothrus bonariensis Troglodytes Troglodytes aedon Troglodytinae
description	Genetic differentiation among shiny cowbird (Molothrus bonariensis) females that use different hosts indicates that in this brood parasite, host use is not random at an individual level. We tested whether there exist differences in morphology and coloration between eggs of shiny cowbirds laid in the nests of two different hosts, the chalk-browed mockingbird (Mimus saturninus) and the house wren (Troglodytes aedon). We took morphometric measures of shiny cowbird eggs found in nests of mockingbirds and wrens and analysed their coloration using digital photography and reflectance spectrometry. We found that shiny cowbird eggs found in mockingbird nests were wider and more asymmetric than those found in wren nests. In addition, cowbird eggs coming from mockingbird nests were brighter and had higher relative red reflectance than those coming from wren nests. Our results show that shiny cowbird eggs laid in nests of two different hosts vary in shape and background colour, but not in spotting pattern. © 2011 The Linnean Society of London.
author	de la Colina, María Alicia Mahler, Bettina Reboreda, Juan Carlos
author_facet	de la Colina, María Alicia Mahler, Bettina Reboreda, Juan Carlos
author_sort	de la Colina, María Alicia
title	Differences in morphology and colour pattern of shiny cowbird (Molothrus bonariensis) eggs found in nests of two hosts
title_short	Differences in morphology and colour pattern of shiny cowbird (Molothrus bonariensis) eggs found in nests of two hosts
title_full	Differences in morphology and colour pattern of shiny cowbird (Molothrus bonariensis) eggs found in nests of two hosts
title_fullStr	Differences in morphology and colour pattern of shiny cowbird (Molothrus bonariensis) eggs found in nests of two hosts
title_full_unstemmed	Differences in morphology and colour pattern of shiny cowbird (Molothrus bonariensis) eggs found in nests of two hosts
title_sort	differences in morphology and colour pattern of shiny cowbird (molothrus bonariensis) eggs found in nests of two hosts
publishDate	2011
url	https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_00244066_v102_n4_p838_DeLaColina http://hdl.handle.net/20.500.12110/paper_00244066_v102_n4_p838_DeLaColina
work_keys_str_mv	AT delacolinamariaalicia differencesinmorphologyandcolourpatternofshinycowbirdmolothrusbonariensiseggsfoundinnestsoftwohosts AT mahlerbettina differencesinmorphologyandcolourpatternofshinycowbirdmolothrusbonariensiseggsfoundinnestsoftwohosts AT reboredajuancarlos differencesinmorphologyandcolourpatternofshinycowbirdmolothrusbonariensiseggsfoundinnestsoftwohosts
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Differences in morphology and colour pattern of shiny cowbird (Molothrus bonariensis) eggs found in nests of two hosts

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