Secondary Contact and Introgression of Golden-Winged Warblers (Vermivora chrysoptera): Documenting the Mechanism

Confer, John L.

doi:10.2307/25150211

The Auk

2006

DOI: 10.2307/25150211

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Secondary Contact and Introgression of Golden-Winged Warblers (Vermivora chrysoptera): Documenting the Mechanism

John L. Confer¹

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

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“…There has been a tremendous increase in introgressionrelated avian research since a comprehensive overview of the introgression complex between the Blue-winged Warbler (Vermivora cyanoptera) and the Golden-winged Warbler (V. chrysoptera) appeared in The Auk five years ago (Confer 2006). Here, we seek to fill a gap by summarizing the most important recent advances in avian introgression research and our current understanding of locus-specific differences in introgression dynamics, the detection of introgression, its directionality, and its relevance to conservation, phylogenetics, and speciation research.…”

mentioning

confidence: 99%

Genetic Introgression: An Integral but neglected component of speciation in birds

Rheindt

Edwards

2011

The Auk

249

240

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mentioning

confidence: 99%

Genetic Introgression: An Integral but neglected component of speciation in birds

Rheindt

Edwards

2011

The Auk

249

240

View full text Add to dashboard Cite

Blood parasite infection and heterozygosity in pure and genetic-hybrid Golden-winged Warblers (Vermivora chrysoptera) across Canada

Vallender

Bull

Moulton

et al. 2012

The Auk

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We examined beterozygosity at bypervariable microsatellite loci and blood parasite presence-absence in five populations of Golden-winged Warblers {Vermivora chrysoptera) tbat span tbe species' Canadian range. All populations were predominantly composed of genetically pure individuals, witb small proportions of pbenotypic and genetic bybrids. By comparing beterozygosity and infection status in concert, we tested wbether more-heterozygous individuals bave lower parasite prevalence, perbaps because tbey possess a more robust immune system. By considering tbe genetic status (pure vs. bybrid) of individuals in relation to infection by parasites and beterozygosity, we build on existing researcb tbat examines tbe effect of Blue-winged Warbler {V. cyanoptera) hybridization on Golden-winged Warbler populations. Finally, by looking at populations across tbe east-west range of tbe species, we could bypotbesize what role geographic variation in vectors might play in population-level infection rates. We found no difference in infection probability between pure and bybrid individuals, but a greater frequency of infection in populations in the western portion of tbe range. Our results add to tbe growing evidence tbat bybrids in this system do not face postzygotic selection, and tbat Golden-winged Warblers breeding in the most northwestern extent of their range may face challenges that could impede their conservation. Ongoing work that compares reproductive success of Ontario and Manitoba populations is likely to add an important dimension to our findings and could furtber inform conservation efforts for tbe species. Infección por Parásitos Sanguineos y Heterocigosidad en Lineas Genéticamente Puras e Híbridas deVermivora chrysoptera en Canadá RESUMEN.-Examinamos la beterocigosidad en loci microsatelitales bipervariables y la presencia/ausencia de parásitos en la sangre de cinco poblaciones de Vermivora chrysoptera a lo largo del área de distribución de la especie en Canadá. Todas las poblaciones estuvieron compuestas predominantemente por individuos genéticamente puros, con pequeñas proporciones de bíbridos genotípicos y morfológicos. Mediante la comparación de la heterocigosidad con el estado de infección, evaluamos si los individuos más heterocigotos tienen menor prevalencia de parásitos, tal vez debido a que poseen un sistema inmune más robusto. Al considerar el estado genético (puro vs. bíbrido) de los individuos en relación con la infección parasitaria y la beterocigosidad, aprovecbamos las investigaciones ya existentes sobre el efecto de la bibridación con V. cyanoptera en las poblaciones de V. chrysoptera. Finalmente, mediante el análisis de poblaciones localizadas a lo largo del sector oriente-occidente de la distribución de esta especie, podemos proponer bipótesis sobre cuál es el efecto que puede tener la variación geográfica de los vectores sobre las tasas de infección especificas de cada población. No encontramos diferencias en la probabilidad de infección entre individuos puros e bibridos, pero si una mayor frecuenc...

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Secondary Contact and Introgression of Golden-Winged Warblers (Vermivora chrysoptera): Documenting the Mechanism

Abstract: BioOne Complete (complete.BioOne.org) is a full-text database of 200 subscribed and open-access titles in the biological, ecological, and environmental sciences published by nonprofit societies, associations, museums, institutions, and presses.

Cited by 2 publications

References 13 publications

Genetic Introgression: An Integral but neglected component of speciation in birds

Genetic Introgression: An Integral but neglected component of speciation in birds

Blood parasite infection and heterozygosity in pure and genetic-hybrid Golden-winged Warblers (Vermivora chrysoptera) across Canada

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