Reciprocal Introgression Between Golden-Winged Warblers (Vermivora Chrysoptera) and Blue-Winged Warblers (V. Pinus) in Eastern North America

Shapiro, Leo H.; Canterbury, Ronald A.; Stover, Dollie M.; Fleischer, Robert C.

doi:10.1642/0004-8038(2004)121[1019:ribgwv]2.0.co;2

Cited by 42 publications

(28 citation statements)

References 10 publications

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“…Third, high mtDNA divergence, and inconsistency between mtDNA and nuclear gene trees, can also be a result of hybridization between closely related species, with introgression of mtDNA from one species to the other (Shapiro et al 2004;Taylor et al 2011). Common redstarts are known to hybridize with the black redstart in Central Europe, even giving rise to apparently fertile hybrids (Grosch 2004).…”

Section: Discussionmentioning

confidence: 99%

“…Nevertheless, Taylor et al (2011) found evidence for hybridization between the sister species common murre (Uria aalge) and thick-billed murre (U. lomvia), with mtDNA introgression from the thick-billed murre into the common murre. Another example is mtDNA introgression between the golden-winged warblers (Vermivora chrysoptera) and the blue-winged warblers (V. cyanoptera) in North America (Shapiro et al 2004).…”

Section: Introductionmentioning

confidence: 99%

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Deep sympatric mitochondrial divergence without reproductive isolation in the common redstart Phoenicurus phoenicurus

Hogner

Laskemoen

Lifjeld

et al. 2012

Ecology and Evolution

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Mitochondrial DNA usually shows low sequence variation within and high sequence divergence among species, which makes it a useful marker for phylogenetic inference and DNA barcoding. A previous study on the common redstart (Phoenicurus phoenicurus) revealed two very different mtDNA haplogroups (5% K2P distance). This divergence is comparable to that among many sister species; however, both haplogroups coexist and interbreed in Europe today. Herein, we describe the phylogeographic pattern of these lineages and test hypotheses for how such high diversity in mtDNA has evolved. We found no evidence for mitochondrial pseudogenes confirming that both haplotypes are of mitochondrial origin. When testing for possible reproductive barriers, we found no evidence for lineage-specific assortative mating and no difference in sperm morphology, indicating that they are not examples of cryptic species, nor likely to reflect the early stages of speciation. A gene tree based on a short fragment of cytochrome c oxidase subunit 1 from the common redstart and 10 other Phoenicurus species, showed no introgression from any of the extant congenerics. However, introgression from an extinct congeneric cannot be excluded. Sequences from two nuclear introns did not show a similar differentiation into two distinct groups. Mismatch distributions indicated that the lineages have undergone similar demographic changes. Taken together, these results confirm that deeply divergent mitochondrial lineages can coexist in biological species. Sympatric mtDNA divergences are relatively rare in birds, but the fact that they occur argues against the use of threshold mtDNA divergences in species delineation.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Deep sympatric mitochondrial divergence without reproductive isolation in the common redstart Phoenicurus phoenicurus

Hogner

Laskemoen

Lifjeld

et al. 2012

Ecology and Evolution

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“…Several pairs of closely allied parulid warblers with equivalent levels of interspecies mitochondrial differentiation hybridize where they come into contact during the breeding season (Gill 1997, Rohwer et al . 2001, Lovette 2004a, Shapiro et al . 2004), leading to extensive introgression of mtDNA haplotypes across taxonomic species boundaries.…”

Section: Species-level Relationships and Historical Biogeographymentioning

confidence: 99%

Phylogenetic affinities and inter‐island differentiation in the Vitelline Warbler Dendroica vitellina, a West Indian endemic

Markland

Lovette

2005

Ibis

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The Vitelline Warbler Dendroica vitellina is endemic to the Cayman Islands and Swan Islands in the West Indies. This study examined the phylogenetic affinities of the Vitelline Warbler and assessed mitochondrial differentiation among the three Cayman Island populations. Species‐level phylogenetic analyses based on 3639 nucleotides of mitochondrial DNA (mtDNA) sequence were used to place the Vitelline Warbler in the larger Dendroica radiation. These analyses confirmed that the Vitelline Warbler is the sister taxon of the Prairie Warbler Dendroica discolor, a species that breeds in continental North America. The magnitude of mitochondrial differentiation between these sister taxa (2.4%) supports their current classification as separate taxonomic species. Additional comparisons based on the 1041‐nucleotide NDII gene sequence from 26 Vitelline Warblers provided evidence of within‐species genetic structure. NDII haplotypes from Grand Cayman vs. Cayman Brac/Little Cayman differed by 6–10 nucleotide substitutions, and no haplotypes were shared among these island groups, supporting the current separation of the Cayman Island populations into two subspecies. These patterns support the biogeographical scenario that the Vitelline Warbler was derived from a mainland population of the Prairie Warbler. This may have occurred due to a loss of migration in ancestral populations or from over‐water dispersal of a mainland resident population.

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“…When these species interbreed they produce two phenotypically distinct, highly stereotyped hybrids known as the ''Lawrence's'' warbler V. lawrencii and ''Brewster's'' warbler V. leucobronchialis. Presumed backcrosses with either of the parental species (Shapiro et al 2004, Dabrowski et al 2005) are thought to produce individuals with a variety of aberrant plumage characters (herein known as ''introgresseds'') that do not conform to either of the parental or recognized hybrid phenotypes (Parkes 1951, Vallender et al 2007b).…”

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confidence: 99%

“…Few regions of sympatry show signs of long-term persistence as the arrival of blue-winged warblers is typically followed by the disappearance of golden-winged warblers within 50 years (Gill 1997; but see Confer and Tupper 2000, for an exception). However, the species replacement mechanism exhibited by blue-winged warblers is still unclear (see Confer and Knapp 1981, Will 1986, Ryan and Wagner 1987, Niemi and Hanowski 1992, Gill 1997, and Vallender et al 2007b for possible explanations), and recent evidence from mitochondrial DNA, paternity, and reproductive performance studies suggests that goldenwinged warblers may not be at a competitive disadvantage (Shapiro et al 2004, Dabrowski et al 2005, Vallender et al 2007a).…”

mentioning

confidence: 99%

Nestling sex ratio of golden‐winged warblers Vermivora chrysoptera in an introgressed population

Neville¹,

Vallender²,

Robertson³

2008

Journal of Avian Biology

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Sex ratio biases in avian species remain controversial, although several studies have documented apparent facultative adjustment of offspring sex ratios. While hybridizing pied and collared flycatchers have exhibited sex ratio skews that may be a response to sex‐based costs associated with hybridization, this appears not to be true of a hybridized population of blue‐winged Vermivora pinus and golden‐winged V. chrysoptera warblers. We examined the primary sex ratio of nestlings in a population of hybrid and introgressed golden‐winged warblers. The sex ratio of 298 nestlings from 81 nests in the population was approximately 50:50. We conducted paternity assignments and analyzed groups of nestlings with shared genetic parents (“genetic broods”) and found no difference from the expected binomial distribution, and no statistically significant relationship between parental species phenotype and nestling sex ratio. We saw no evidence of preferential production of male or female nestlings, and female hybrids were found to mate and breed in the population. This suggests that heterogametic (female) hybrids are both viable and fertile, and thus that Haldane's Rule does not apply to this system. While populations of hybridizing golden‐winged warblers should be monitored for evidence of costs of heterospecific pairings, it is unlikely that adjustment of sex ratios would be the form of compensation for sub‐optimal mating conditions. Our results provide support for the emerging hypothesis that hybrids suffer no disadvantage relative to golden‐winged and blue‐winged warblers.

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Reciprocal Introgression Between Golden-Winged Warblers (Vermivora Chrysoptera) and Blue-Winged Warblers (V. Pinus) in Eastern North America

Cited by 42 publications

References 10 publications

Deep sympatric mitochondrial divergence without reproductive isolation in the common redstart Phoenicurus phoenicurus

Deep sympatric mitochondrial divergence without reproductive isolation in the common redstart Phoenicurus phoenicurus

Phylogenetic affinities and inter‐island differentiation in the Vitelline Warbler Dendroica vitellina, a West Indian endemic

Nestling sex ratio of golden‐winged warblers Vermivora chrysoptera in an introgressed population

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