Hybrid origin of Audubon’s warbler

  title={Hybrid origin of Audubon’s warbler},
  author={Alan Brelsford and Borja Mil{\'a} and Darren E. Irwin},
  journal={Molecular Ecology},
Several animal species have recently been shown to have hybrid origins, but no avian examples have been documented with molecular evidence. [] Key Result Analysis of nuclear amplified fragment length polymorphism (AFLP) and sequence markers shows that Audubon's warblers are genetically intermediate and carry a mixture of alleles otherwise found only in one or the other of their putative parental species.
Extensive hybridization between two Andean warbler species with shallow divergence in mtDNA
ABSTRACT Studying processes acting on differentiated populations upon secondary contact, such as hybridization, is important to comprehensively understand how species are formed and maintained over
Similar hybrid composition among different age and sex classes in the Myrtle–Audubon's warbler hybrid zone
The results do not support large differences in viability between male and female hybrids or between different age classes of hybrids, and it is found that the genomic composition of birds in the hybrid zone spans the full ancestry spectrum.
Hybridization between Townsend's Dendroica townsendi and black-throated green warblers D. virens in an avian suture zone
Analysis of plumage, morphology, and mitochondrial (COI) and nuclear molecular markers (CHD1Z and numt-Dco1) shows surprisingly extensive hybridization between Townsend’s warblers, with at least 38% of individuals in the hybrid zone being either hybrids or backcrosses.
A cryptic contact zone between divergent mitochondrial DNA lineages in southwestern North America supports past introgressive hybridization in the yellow-rumped warbler complex (Aves: Dendroica coronata)
Analysis of morphological traits shows that memorabilis is significantly differentiated from auduboni and nigrifrons in some traits, yet is overall intermediate between the two, which is consistent with a shared common ancestor for the Audubon's warbler group.
Increasing evidence of the role of gene flow in animal evolution: hybrid speciation in the yellow‐rumped warbler complex
The authors present three major lines of molecular evidence suggesting that this is not simply a case of a hybrid swarm or limited introgression within the yellow‐rumped warbler complex.
A new wood warbler hybrid (Oreothlypis celata x O. ruficapilla) from the Adirondack mountains, New York
Genetic and morphometric analysis of a suspected hybrid of a previously unreported species cross in the genus Oreothlypis, captured in a montane spruce-fir forest in the Adirondack Mountains of New York showed the hybrid to be morphologically intermediate between the two parent species.
Isotopic variation across the Audubon's–myrtle warbler hybrid zone
Estimation of wintering locations and migratory patterns of Audubon's and myrtle warblers and their hybrids suggest there is a migratory divide between these two species, but that it is not directly coincident with the centre of the hybrid zone in the breeding range.
Extensive unidirectional introgression between two salamander lineages of ancient divergence and its evolutionary implications
The observed genetic structure, together with their geographic pattern of distribution, suggests that Salamandrina populations in central Italy could have entered a distinct evolutionary pathway, and how far they have gone along this pathway will deserve future investigation.
Hybrid swarm between divergent lineages of mule deer (Odocoileus hemionus)
Using microsatellite and mitochondrial DNA, clear evidence is found for extensive hybridization and introgression between lineages, with varying degrees of admixture across the zone of contact.
Genomic variation across the Yellow-rumped Warbler species complex
It is shown that genomic variation is highly heterogeneous between some taxa and that these regions of high differentiation are relatively small compared to those in other study systems, and it is found that the clusters of highly differentiated markers between taxa occur in gene-rich regions of the genome and exhibit low within-population diversity.


Speciation and rapid phenotypic differentiation in the yellow‐rumped warbler Dendroica coronata complex
The relative importance of the Pleistocene glacial cycles in driving avian speciation remains controversial, partly because species limits in many groups remain poorly understood, and because current
Extensive hybridization in a contact zone between MacGillivray's warblersOporornistolmieiand mourning warblersO. philadelphiadetected using molecular and morphological analyses
There are many pairs of related western and eastern avian taxa in North America, and for many of these, little is known about their interactions in sympatry. One example is provided by MacGillivray’s
No genomic mosaicism in a putative hybrid butterfly species
Frequency variation for 657 amplified fragment length polymorphism (AFLP) markers and DNA sequence variation from 16 genes are used to determine whether the genome of Heliconius pachinus, a suspected hybrid butterfly species, is a mixture of the putative parental species, Heliconio cydno and Heliconia melpomene.
Genetic differentiation among recently diverged delphinid taxa determined using AFLP markers.
A nonmetric multidimensional scaling analysis clearly differentiated both Delphinus species, indicating that significant nuclear genetic differentiation has arisen between the species despite their morphological similarity, and suggesting that they should be considered different species.
Incipient Speciation Despite Little Assortative Mating: The Yellow-Rumped Warbler Hybrid Zone
A study of a classic avian hybrid zone in North America between two subspecies of the yellow-rumped warbler, which shows that despite extensive hybridization the two forms are distinct evolutionary groups carrying genes for divergent adaptive peaks, and this situation appears relatively stable.
Cryptic speciation in a Holarctic passerine revealed by genetic and bioacoustic analyses
It is indicated that the two forms are reproductively isolated to a high degree where they co‐occur and are therefore separate species, and it is suggested that sexual selection played a larger role than habitat divergence in generating reproductive isolation.
The Relationships and Evolution of the Dendroica coronata Complex
The Myrtle Warbler and Audubon's Warbler are two distinct but closely related and essentially allopatric species, the boreal forest of northern North America and the cordilleran forests of the western part of the continent.
Speciation by hybridization in Heliconius butterflies
It is shown that a hybrid trait in an animal species can directly cause reproductive isolation, and that the phenotype of H. heurippa reproductively isolates it from both parental species.
An invasive lineage of sculpins, Cottus sp. (Pisces, Teleostei) in the Rhine with new habitat adaptations has originated from hybridization between old phylogeographic groups
It is concluded that hybridization between long separated groups has lead to the fast emergence of a new, adaptationally distinct sculpin lineage that possesses a unique ecological potential that does not occur in either of the source populations from the Rhine or the Scheldt, which allows the colonization of new habitats that have been free of sculpins.
Geographic and phylogenetic evidence for dispersed nuclear introgression in a daphniid with sexual propagules
It is argued that the unique biology of Holarctic lacustrine water fleas and the spatial separation of lineages during Pleistocene glaciation have promoted hybridization and its evolutionary consequences.