The Song Sparrow, Melospiza melodia, as a ring species: Patterns of geographic variation, a revision of subspecies, and implications for speciation

@article{Patten2009TheSS,
  title={The Song Sparrow, Melospiza melodia, as a ring species: Patterns of geographic variation, a revision of subspecies, and implications for speciation},
  author={M. Patten and C. L. Pruett},
  journal={Systematics and Biodiversity},
  year={2009},
  volume={7},
  pages={33 - 62}
}
Abstract Identification and analysis of ring species are important to our understanding of evolution and speciation. We review geographic variation in the Song Sparrow (Melospiza melodia) in the context of a ring species, one of few known from the highly vagile class Aves. Although 52 subspecies have been named, our reassessment of morphological variation across the entire species reveals that 25 subspecies are diagnosable throughout the species’ range, which includes much of the North American… Expand
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References

SHOWING 1-10 OF 172 REFERENCES
SUBSPECIFIC DIFFERENTIATION AND CONSERVATION OF SONG SPARROWS (MELOSPIZA MELODIA) IN THE SAN FRANCISCO BAY REGION INFERRED BY MICROSATELLITE LOCI ANALYSIS
TLDR
It is proposed that a management unit encompassing the range of M. m. Expand
SONG VARIATION IN AN AVIAN RING SPECIES
Abstract Divergence of mating signals can occur rapidly and be of prime importance in causing reproductive isolation and speciation. A ring species, in which two reproductively isolated taxa areExpand
The herring gull complex is not a ring species
TLDR
Based on mitochondrial DNA variation among 21 gull taxa, it is shown that members of this complex differentiated largely in allopatry following multiple vicariance and long–distance–colonization events, not primarily through isolation by distance. Expand
Amak Island Song Sparrows (Melospiza melodia amaka) are not evolutionarily significant
TLDR
It is proposed that the isolated, small, and endemic population of Amak Island Song Sparrows is not an evolutionarily significant unit (ESU), not a valid subspecies, not a distinct population segment (DPS), nor a diagnosable conservation unit, but rather a sink colonized by regional source populations. Expand
GENE FLOW, REFUGIA, AND EVOLUTION OF GEOGRAPHIC VARIATION IN THE SONG SPARROW (MELOSPIZA MELODIA)
TLDR
It is suggested that postglaciation dispersal scattered mtDNA haplotypes across the continent, explaining the lack of mtDNA geographic patterns in song sparrows. Expand
EVOLUTIONARY RELATIONSHIPS WITHIN THE ENSATINA ESCHSCHOLTZII COMPLEX CONFIRM THE RING SPECIES INTERPRETATION
TLDR
Division of this complex into separate species on the basis of the observed patterns of monophyly for mitochondrial DNA is unwarranted because further sampling could reveal additional instances of paraphyly across subspecies and, more generally, because mtDNA alone should not be used to infer species boundaries. Expand
PROBLEMS WITH SPECIES: PATTERNS AND PROCESSES OF SPECIES FORMATION IN SALAMANDERS1
TLDR
Analysis of patterns of genetic differentiation in allozymes and mtDNA in relation to the geological history of California is used to generate biogeographic scenarios to help explain the contrast between Batrachoseps and Ensatina. Expand
The effects of contemporary processes in maintaining the genetic structure of western song sparrows (Melospiza melodia)
TLDR
It is suggested that geographic isolation and limited gene flow facilitated by migratory behavior are responsible for maintaining observed levels of differentiation among Pacific coastal song sparrow populations. Expand
Concordant and Discordant Signals Between Genetic Data and Described Subspecies of Pacific Coast Song Sparrows
TLDR
It is suggested that a combination of phenotypic characters, behavioral traits, and multiple loci be used when assessing geographic variation in birds, and that sampling should be conducted in more than one location within broadly distributed subspecies. Expand
Speciation in a ring
TLDR
This work reconstructs the pathway to speciation between two reproductively isolated forms of greenish warbler and shows how gradual divergence in a trait involved in mate choice leads to theformation of new species. Expand
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