Discrimination Behavior and Hybridization of the Blue-Winged and Golden-Winged Warblers

Gill, F.; Murray, Bertram G.

doi:10.1111/j.1558-5646.1972.tb00194.x

Cited by 46 publications

(50 citation statements)

References 12 publications

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“…bREEDINg bIOlOgY golden-winged Warblers are known to produce broods of mixed paternity via extra-pair fertilizations (Reed et al 2007, Vallender et al 2007a. Moreover, golden-winged Warblers regularly hybridize and produce fertile offspring with the congeneric blue-winged Warbler (V. pinus;gill 1980gill , Neville et al 2008. hybrids sing song type I of either the goldenwinged or the blue-winged Warbler, and both species have been known to sing the other's song type I (Ficken and Ficken 1968;R.…”

Section: Study Species' Songmentioning

confidence: 96%

Male Song Variation and Female Mate Choice in the Golden-Winged Warbler

Harper

Vallender

Robertson

2010

Condor

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Resumen. Investigamos los rasgos distintivos de los cantos de los machos y la relación entre las variables de los cantos y la selección de pareja por parte de las hembras en Vermivora chrysoptera. Registramos y cuantificamos los cantos de 23 machos para examinar los rasgos vinculados con el desempeño y los contenidos específicos de cada canto. Realizamos análisis de función discriminante para comparar la variación en un mismo macho y entre machos de las características de los canto tipo I y II. Empleamos ADN microsatelital para identificar a los padres de 62 pichones provenientes de 17 nidos. Mediante la asignación de paternidad a los machos de nuestra población, pudimos examinar la relación entre la elección de las hembras y las variaciones en los cantos de los machos comparando las características de los progenitores de una pareja y los externos a las parejas. A pesar de que fuimos capaces de discriminar estadísticamente entre los cantos individuales de los machos, no encontramos diferencias significativas en las variables de los cantos entre los machos de una pareja y los externos a las parejas para un nido determinado. Por ende, las hembras de V. chrysoptera no parecen estar usando estas diferencias en los cantos para elegir a su pareja. Se necesita más investigación sobre V. chrysoptera para entender la función del canto y para mejorar los conocimientos de la biología reproductiva de la especie. Ambas líneas de investigación pueden tener implicancias importantes para la conservación de esta especie cuyas poblaciones están disminuyendo. MAlE SONg VARIATION AND FEMAlE MATE ChOICE IN ThE gOlDEN-WINgED WARblERVariación del Canto en Machos y Selección de Pareja por parte de la hembra en Vermivora chrysoptera Abstract. We investigated the distinctiveness of males' song and the relationship between song variables and females' mate choice in the golden-winged Warbler (Vermivora chrysoptera). We recorded the songs of 23 males and quantified them to examine performance-related traits and specific song content. We carried out discriminant function analysis to compare variation within and among males for characteristics of both song types I and II. We used microsatellite DNA to identify the parents of 62 nestlings from 17 nests. by assigning paternity to males in our population we could examine relationships between females' choice and variation in males' song by comparing characteristics of within-and extra-pair sires. While we were able to discriminate statistically between individual males' songs, we found no significant differences in song variables between the within-and extra-pair males at a given nest. Therefore, female golden-winged Warblers do not appear to be using these differences in song in choosing a mate. Further research on the golden-winged Warbler is needed to understand song function and to gain insight into this species' reproductive biology, both of which could have important conservation implications for this declining species.

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Section: Study Species' Songmentioning

confidence: 96%

Male Song Variation and Female Mate Choice in the Golden-Winged Warbler

Harper

Vallender

Robertson

2010

Condor

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“…Since mtDNA is inherited maternally, we included samples from male and female adults and one representative nestling from clutches where the mother was not captured but her phenotype was documented. Warblers sampled from SFSP had pure parental phenotypes or the distinct Brewster's phenotype without apparent plumage introgression, following the criteria of Gill (1980). The recent contact site was located at the Queen's University Biological Station (QUBS) in southeastern Ontario, Canada (44°34¢N, 76°19¢W).…”

Section: Populations Sampledmentioning

confidence: 99%

Geographic variability in mitochondrial introgression among hybridizing populations of Golden-winged (Vermivora chrysoptera) and Blue-winged (V.opinus) Warblers

et al. 2005

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The rapidly declining Golden-winged Warbler (Vermivora chrysoptera) is of conservation concern owing in part to hybridization with the closely related Blue-winged Warbler (V. pinus). These species hybridize extensively in eastern North America and over the past century the Blue-winged Warbler has displaced the Golden-winged Warbler from substantial regions of its historic breeding range. A previous study suggested that these genetic interactions result in rapid and asymmetric introgression of Blue-winged Warbler mitochondrial DNA (mtDNA) into Golden-winged phenotype populations within the zones of contact, but more recent and extensive surveys have documented a more complex pattern of genetic interchange between these taxa. We surveyed mtDNA/phenotype associations in 104 individuals of known phenotype drawn from two locations with different histories of contact and found substantial variation between sites in the extent of introgression. Where both species have co-existed for more than a century, we found evidence of bi-directional introgression and the long-term persistence of Golden-winged mtDNA haplotypes. At the leading edge of the northward expansion of Blue-winged Warblers, we found predominantly Golden-winged Warbler mtDNA haplotypes in both Golden-winged and hybrid-phenotype individuals. Across both sites, genetic swamping does not appear to be occurring via the early immigration of Blue-winged Warbler females into populations dominated by Golden-winged Warbler phenotypes. Instead, the differing patterns of mitochondrial introgression may be driven by the relative local population sizes of the parental species coupled with subtle between-species differences in mate choice and habitat preferences.

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“…Interbreeding between closely related species is fairly common in birds (Gill 1980, Sattler and Braun 2000, Sonsthagen et al 2012. Interbreeding also usually occurs between recognized avian subspecies (Barrowclough 1980, Moore et al 1991, Archawaranon 2002, or subpopulations (Helbig 1991) where two intraspecific taxa come into contact.…”

Section: Discussionmentioning

confidence: 96%