Eggshell spotting in brood parasitic shiny cowbirds (Molothrus bonariensis) is not linked to the female sex chromosome

For avian brood parasites in which individual females are host-specialists, the arms race between hosts and parasites has favored egg color polymorphism in the parasite, with female lineages laying mimetic eggs that resemble those of the host species they parasitize. Female sex-linked inheritance of...

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Autores principales: Mahler, B., Confalonieri, V.A., Lovette, I.J., Reboreda, J.C.
Formato: JOUR
Materias:
Brood parasitism
Eggshell spotting
Molothrus bonariensis
mtDNA
Shiny cowbird
arms race
brood parasitism
chromosome
color morph
eggshell
gene expression
generalist
maternal effect
mitochondrial DNA
passerine
polymorphism
specialist
Aves
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_03405443_v62_n7_p1193_Mahler
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_03405443_v62_n7_p1193_Mahler
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spelling todo:paper_03405443_v62_n7_p1193_Mahler2023-10-03T15:25:41Z Eggshell spotting in brood parasitic shiny cowbirds (Molothrus bonariensis) is not linked to the female sex chromosome Mahler, B. Confalonieri, V.A. Lovette, I.J. Reboreda, J.C. Brood parasitism Eggshell spotting Molothrus bonariensis mtDNA Shiny cowbird arms race brood parasitism chromosome color morph eggshell gene expression generalist maternal effect mitochondrial DNA passerine polymorphism specialist Aves Molothrus bonariensis For avian brood parasites in which individual females are host-specialists, the arms race between hosts and parasites has favored egg color polymorphism in the parasite, with female lineages laying mimetic eggs that resemble those of the host species they parasitize. Female sex-linked inheritance of egg color fosters evolutionary stability of egg polymorphism if female lineages show both consistent eggshell color and host use. This co-evolutionary relationship is unlikely to occur if individual brood parasites use different hosts or if egg color is not maternally inherited. The shiny cowbird (Molothrus bonariensis) is an extreme generalist brood parasite that shows a very high degree of egg polymorphism. We tested whether egg spotting in this species has female sex-linked inheritance. If genetic factors controlling the expression of egg spotting were present on the female-specific W chromosome, we expected co-segregation between spotting patterns and mtDNA haplotypes, as both W and mtDNA are maternally inherited. In contrast to the known maternal inheritance of spotting patterns in great tits, we found no associations between eggshell spotting and mtDNA haplotypes, which suggests that eggshell spotting is not maternally inherited in this cowbird species. © 2008 Springer-Verlag. Fil:Mahler, B. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Confalonieri, V.A. 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. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_03405443_v62_n7_p1193_Mahler
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
Eggshell spotting
Molothrus bonariensis
mtDNA
Shiny cowbird
arms race
brood parasitism
chromosome
color morph
eggshell
gene expression
generalist
maternal effect
mitochondrial DNA
passerine
polymorphism
specialist
Aves
Molothrus bonariensis
spellingShingle Brood parasitism
Eggshell spotting
Molothrus bonariensis
mtDNA
Shiny cowbird
arms race
brood parasitism
chromosome
color morph
eggshell
gene expression
generalist
maternal effect
mitochondrial DNA
passerine
polymorphism
specialist
Aves
Molothrus bonariensis
Mahler, B.
Confalonieri, V.A.
Lovette, I.J.
Reboreda, J.C.
Eggshell spotting in brood parasitic shiny cowbirds (Molothrus bonariensis) is not linked to the female sex chromosome
topic_facet Brood parasitism
Eggshell spotting
Molothrus bonariensis
mtDNA
Shiny cowbird
arms race
brood parasitism
chromosome
color morph
eggshell
gene expression
generalist
maternal effect
mitochondrial DNA
passerine
polymorphism
specialist
Aves
Molothrus bonariensis
description For avian brood parasites in which individual females are host-specialists, the arms race between hosts and parasites has favored egg color polymorphism in the parasite, with female lineages laying mimetic eggs that resemble those of the host species they parasitize. Female sex-linked inheritance of egg color fosters evolutionary stability of egg polymorphism if female lineages show both consistent eggshell color and host use. This co-evolutionary relationship is unlikely to occur if individual brood parasites use different hosts or if egg color is not maternally inherited. The shiny cowbird (Molothrus bonariensis) is an extreme generalist brood parasite that shows a very high degree of egg polymorphism. We tested whether egg spotting in this species has female sex-linked inheritance. If genetic factors controlling the expression of egg spotting were present on the female-specific W chromosome, we expected co-segregation between spotting patterns and mtDNA haplotypes, as both W and mtDNA are maternally inherited. In contrast to the known maternal inheritance of spotting patterns in great tits, we found no associations between eggshell spotting and mtDNA haplotypes, which suggests that eggshell spotting is not maternally inherited in this cowbird species. © 2008 Springer-Verlag.
format JOUR
author Mahler, B.
Confalonieri, V.A.
Lovette, I.J.
Reboreda, J.C.
author_facet Mahler, B.
Confalonieri, V.A.
Lovette, I.J.
Reboreda, J.C.
author_sort Mahler, B.
title Eggshell spotting in brood parasitic shiny cowbirds (Molothrus bonariensis) is not linked to the female sex chromosome
title_short Eggshell spotting in brood parasitic shiny cowbirds (Molothrus bonariensis) is not linked to the female sex chromosome
title_full Eggshell spotting in brood parasitic shiny cowbirds (Molothrus bonariensis) is not linked to the female sex chromosome
title_fullStr Eggshell spotting in brood parasitic shiny cowbirds (Molothrus bonariensis) is not linked to the female sex chromosome
title_full_unstemmed Eggshell spotting in brood parasitic shiny cowbirds (Molothrus bonariensis) is not linked to the female sex chromosome
title_sort eggshell spotting in brood parasitic shiny cowbirds (molothrus bonariensis) is not linked to the female sex chromosome
url http://hdl.handle.net/20.500.12110/paper_03405443_v62_n7_p1193_Mahler
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